mirror of https://github.com/citusdata/citus.git
943 lines
44 KiB
Plaintext
943 lines
44 KiB
Plaintext
-- Tests to check propagation of all view commands
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CREATE SCHEMA view_prop_schema;
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SET search_path to view_prop_schema;
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SET citus.next_shard_id TO 1420195;
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-- Check creating views depending on different types of tables
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-- and from multiple schemas
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-- Check the most basic one
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CREATE VIEW prop_view_basic AS SELECT 1;
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-- Try to create view depending local table, then try to recreate it after distributing the table
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CREATE TABLE view_table_1(id int, val_1 text);
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CREATE VIEW prop_view_1 AS
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SELECT * FROM view_table_1;
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WARNING: "view prop_view_1" has dependency to "table view_table_1" that is not in Citus' metadata
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DETAIL: "view prop_view_1" will be created only locally
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HINT: Distribute "table view_table_1" first to distribute "view prop_view_1"
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SELECT create_distributed_table('view_table_1', 'id');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE OR REPLACE VIEW prop_view_1 AS
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SELECT * FROM view_table_1;
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-- Try to create view depending local table, then try to recreate it after making the table reference table
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CREATE TABLE view_table_2(id int PRIMARY KEY, val_1 text);
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CREATE VIEW prop_view_2 AS
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SELECT view_table_1.id, view_table_2.val_1 FROM view_table_1 INNER JOIN view_table_2
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ON view_table_1.id = view_table_2.id;
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WARNING: "view prop_view_2" has dependency to "table view_table_2" that is not in Citus' metadata
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DETAIL: "view prop_view_2" will be created only locally
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HINT: Distribute "table view_table_2" first to distribute "view prop_view_2"
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SELECT create_reference_table('view_table_2');
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create_reference_table
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---------------------------------------------------------------------
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(1 row)
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CREATE OR REPLACE VIEW prop_view_2 AS
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SELECT view_table_1.id, view_table_2.val_1 FROM view_table_1 INNER JOIN view_table_2
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ON view_table_1.id = view_table_2.id;
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-- Try to create view depending local table, then try to recreate it after making the table citus local table
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CREATE TABLE view_table_3(id int, val_1 text);
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CREATE VIEW prop_view_3 AS
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SELECT * FROM view_table_1 WHERE id IN
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(SELECT view_table_2.id FROM view_table_2 INNER JOIN view_table_3 ON view_table_2.id = view_table_3.id);
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WARNING: "view prop_view_3" has dependency to "table view_table_3" that is not in Citus' metadata
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DETAIL: "view prop_view_3" will be created only locally
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HINT: Distribute "table view_table_3" first to distribute "view prop_view_3"
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SET client_min_messages TO WARNING;
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SELECT 1 FROM citus_add_node('localhost', :master_port, groupid=>0);
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?column?
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---------------------------------------------------------------------
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1
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(1 row)
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RESET client_min_messages;
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ALTER TABLE view_table_3
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ADD CONSTRAINT f_key_for_local_table
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FOREIGN KEY(id)
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REFERENCES view_table_2(id);
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CREATE OR REPLACE VIEW prop_view_3 AS
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SELECT * FROM view_table_1 WHERE id IN
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(SELECT view_table_2.id FROM view_table_2 INNER JOIN view_table_3 ON view_table_2.id = view_table_3.id);
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-- Try to create view depending on PG metadata table
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CREATE VIEW prop_view_4 AS
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SELECT * FROM pg_stat_activity;
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-- Try to create view depending on Citus metadata table
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CREATE VIEW prop_view_5 AS
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SELECT * FROM citus_dist_stat_activity;
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-- Try to create table depending on a local table from another schema, then try to create it again after distributing the table
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CREATE SCHEMA view_prop_schema_inner;
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SET search_path TO view_prop_schema_inner;
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-- Create local table for tests below
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CREATE TABLE view_table_4(id int, val_1 text);
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-- Create a distributed table and view to test drop view below
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CREATE TABLE inner_view_table(id int);
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SELECT create_distributed_table('inner_view_table','id');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE VIEW inner_view_prop AS SELECT * FROM inner_view_table;
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SET search_path to view_prop_schema;
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CREATE VIEW prop_view_6 AS
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SELECT vt1.id, vt4.val_1 FROM view_table_1 AS vt1
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INNER JOIN view_prop_schema_inner.view_table_4 AS vt4 ON vt1.id = vt4.id;
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WARNING: "view prop_view_6" has dependency to "table view_prop_schema_inner.view_table_4" that is not in Citus' metadata
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DETAIL: "view prop_view_6" will be created only locally
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HINT: Distribute "table view_prop_schema_inner.view_table_4" first to distribute "view prop_view_6"
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SELECT create_distributed_table('view_prop_schema_inner.view_table_4','id');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE OR REPLACE VIEW prop_view_6 AS
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SELECT vt1.id, vt4.val_1 FROM view_table_1 AS vt1
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INNER JOIN view_prop_schema_inner.view_table_4 AS vt4 ON vt1.id = vt4.id;
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-- Show that all views are propagated as distributed object
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_%' ORDER BY 1;
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,prop_view_1}",{})
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(view,"{view_prop_schema,prop_view_2}",{})
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(view,"{view_prop_schema,prop_view_3}",{})
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(view,"{view_prop_schema,prop_view_4}",{})
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(view,"{view_prop_schema,prop_view_5}",{})
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(view,"{view_prop_schema,prop_view_6}",{})
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(view,"{view_prop_schema,prop_view_basic}",{})
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(7 rows)
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-- Check creating views depending various kind of objects
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-- Tests will also check propagating dependent objects
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-- Depending on function
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SET citus.enable_ddl_propagation TO OFF;
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CREATE OR REPLACE FUNCTION func_1_for_view(param_1 int)
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RETURNS int
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LANGUAGE plpgsql AS
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$$
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BEGIN
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return param_1;
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END;
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$$;
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RESET citus.enable_ddl_propagation;
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-- Show that function will be propagated together with the view
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%func_1_for_view%';
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obj_identifier
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---------------------------------------------------------------------
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(0 rows)
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CREATE VIEW prop_view_7 AS SELECT func_1_for_view(id) FROM view_table_1;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%func_1_for_view%';
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obj_identifier
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---------------------------------------------------------------------
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(function,"{view_prop_schema,func_1_for_view}",{integer})
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(1 row)
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_7%';
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,prop_view_7}",{})
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(1 row)
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-- Depending on type
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SET citus.enable_ddl_propagation TO OFF;
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CREATE TYPE type_for_view_prop AS ENUM ('a','b','c');
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RESET citus.enable_ddl_propagation;
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-- Show that type will be propagated together with the view
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%type_for_view_prop%';
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obj_identifier
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---------------------------------------------------------------------
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(0 rows)
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CREATE VIEW prop_view_8 AS SELECT val_1::type_for_view_prop FROM view_table_1;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%type_for_view_prop%';
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obj_identifier
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---------------------------------------------------------------------
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(type,{view_prop_schema.type_for_view_prop},{})
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(1 row)
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_8%';
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,prop_view_8}",{})
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(1 row)
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-- Depending on another view
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CREATE TABLE view_table_5(id int);
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CREATE VIEW prop_view_9 AS SELECT * FROM view_table_5;
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WARNING: "view prop_view_9" has dependency to "table view_table_5" that is not in Citus' metadata
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DETAIL: "view prop_view_9" will be created only locally
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HINT: Distribute "table view_table_5" first to distribute "view prop_view_9"
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CREATE VIEW prop_view_10 AS SELECT * FROM prop_view_9;
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WARNING: "view prop_view_10" has dependency to "table view_table_5" that is not in Citus' metadata
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DETAIL: "view prop_view_10" will be created only locally
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HINT: Distribute "table view_table_5" first to distribute "view prop_view_10"
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_9%';
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obj_identifier
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---------------------------------------------------------------------
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(0 rows)
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_10%';
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obj_identifier
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---------------------------------------------------------------------
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(0 rows)
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SELECT create_distributed_table('view_table_5', 'id');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE OR REPLACE VIEW prop_view_10 AS SELECT * FROM prop_view_9;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_9%';
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,prop_view_9}",{})
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(1 row)
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_10%';
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,prop_view_10}",{})
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(1 row)
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-- Check views owned by non-superuser
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SET client_min_messages TO ERROR;
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CREATE USER view_creation_user;
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SELECT 1 FROM run_command_on_workers($$CREATE USER view_creation_user;$$);
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?column?
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---------------------------------------------------------------------
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1
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1
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(2 rows)
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GRANT ALL PRIVILEGES ON SCHEMA view_prop_schema to view_creation_user;
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SET ROLE view_creation_user;
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CREATE TABLE user_owned_table_for_view(id int);
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SELECT create_distributed_table('user_owned_table_for_view','id');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE VIEW view_owned_by_user AS SELECT * FROM user_owned_table_for_view;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%view_owned_by_user%';
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,view_owned_by_user}",{})
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(1 row)
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DROP VIEW view_owned_by_user;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%view_owned_by_user%';
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obj_identifier
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---------------------------------------------------------------------
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(0 rows)
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DROP TABLE user_owned_table_for_view;
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RESET ROLE;
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RESET client_min_messages;
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-- Create view with different options
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CREATE TABLE view_table_6(id int, val_1 text);
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SELECT create_distributed_table('view_table_6','id');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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-- TEMP VIEW is not supported. View will be created locally.
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CREATE TEMP VIEW temp_prop_view AS SELECT * FROM view_table_6;
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WARNING: "view temp_prop_view" has dependency on unsupported object "schema pg_temp_xxx"
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DETAIL: "view temp_prop_view" will be created only locally
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-- Recursive views are supported
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CREATE RECURSIVE VIEW nums_1_100_prop_view (n) AS
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VALUES (1)
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UNION ALL
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SELECT n+1 FROM nums_1_100_prop_view WHERE n < 100;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%nums_1_100_prop_view%';
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,nums_1_100_prop_view}",{})
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(1 row)
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-- Sequences are supported as dependency
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CREATE SEQUENCE sequence_to_prop;
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CREATE VIEW seq_view_prop AS SELECT sequence_to_prop.is_called FROM sequence_to_prop;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%sequence_to_prop%';
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obj_identifier
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---------------------------------------------------------------------
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(sequence,"{view_prop_schema,sequence_to_prop}",{})
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(1 row)
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%seq_view_prop%';
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,seq_view_prop}",{})
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(1 row)
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-- Views depend on temp sequences will be created locally
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CREATE TEMPORARY SEQUENCE temp_sequence_to_drop;
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CREATE VIEW temp_seq_view_prop AS SELECT temp_sequence_to_drop.is_called FROM temp_sequence_to_drop;
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NOTICE: view "temp_seq_view_prop" will be a temporary view
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WARNING: "view temp_seq_view_prop" has dependency on unsupported object "schema pg_temp_xxx"
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DETAIL: "view temp_seq_view_prop" will be created only locally
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-- Check circular dependencies are detected
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CREATE VIEW circular_view_1 AS SELECT * FROM view_table_6;
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CREATE VIEW circular_view_2 AS SELECT * FROM view_table_6;
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CREATE OR REPLACE VIEW circular_view_1 AS SELECT view_table_6.* FROM view_table_6 JOIN circular_view_2 USING (id);
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CREATE OR REPLACE VIEW circular_view_2 AS SELECT view_table_6.* FROM view_table_6 JOIN circular_view_1 USING (id);
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ERROR: Citus can not handle circular dependencies between distributed objects
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DETAIL: "view circular_view_2" circularly depends itself, resolve circular dependency first
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-- Recursive views with distributed tables included
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CREATE TABLE employees (employee_id int, manager_id int, full_name text);
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SELECT create_distributed_table('employees', 'employee_id');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE OR REPLACE RECURSIVE VIEW reporting_line (employee_id, subordinates) AS
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SELECT
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employee_id,
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full_name AS subordinates
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FROM
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employees
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WHERE
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manager_id IS NULL
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UNION ALL
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SELECT
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e.employee_id,
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(
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rl.subordinates || ' > ' || e.full_name
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) AS subordinates
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FROM
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employees e
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INNER JOIN reporting_line rl ON e.manager_id = rl.employee_id;
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-- Aliases are supported
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CREATE VIEW aliased_opt_prop_view(alias_1, alias_2) AS SELECT * FROM view_table_6 table_name_for_view;
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-- View options are supported
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CREATE VIEW opt_prop_view
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WITH(check_option=CASCADED, security_barrier=true)
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AS SELECT * FROM view_table_6 table_name_for_view;
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CREATE VIEW sep_opt_prop_view
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AS SELECT * FROM view_table_6 table_name_for_view
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WITH LOCAL CHECK OPTION;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%opt_prop_view%' ORDER BY 1;
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obj_identifier
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---------------------------------------------------------------------
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(view,"{view_prop_schema,aliased_opt_prop_view}",{})
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(view,"{view_prop_schema,opt_prop_view}",{})
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(view,"{view_prop_schema,sep_opt_prop_view}",{})
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(3 rows)
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-- Check definitions and reltoptions of views are correct on workers
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\c - - - :worker_1_port
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SELECT definition FROM pg_views WHERE viewname = 'aliased_opt_prop_view';
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definition
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---------------------------------------------------------------------
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SELECT id AS alias_1, +
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val_1 AS alias_2 +
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FROM view_prop_schema.view_table_6 table_name_for_view;
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(1 row)
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SELECT definition FROM pg_views WHERE viewname = 'opt_prop_view';
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definition
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---------------------------------------------------------------------
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SELECT id, +
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val_1 +
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FROM view_prop_schema.view_table_6 table_name_for_view;
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(1 row)
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SELECT definition FROM pg_views WHERE viewname = 'sep_opt_prop_view';
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definition
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---------------------------------------------------------------------
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SELECT id, +
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val_1 +
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FROM view_prop_schema.view_table_6 table_name_for_view;
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(1 row)
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SELECT relname, reloptions
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FROM pg_class
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WHERE
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oid = 'view_prop_schema.aliased_opt_prop_view'::regclass::oid OR
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oid = 'view_prop_schema.opt_prop_view'::regclass::oid OR
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oid = 'view_prop_schema.sep_opt_prop_view'::regclass::oid
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ORDER BY 1;
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relname | reloptions
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---------------------------------------------------------------------
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aliased_opt_prop_view |
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opt_prop_view | {check_option=cascaded,security_barrier=true}
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sep_opt_prop_view | {check_option=local}
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(3 rows)
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\c - - - :master_port
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SET search_path to view_prop_schema;
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-- Sync metadata to check it works properly after adding a view
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SELECT start_metadata_sync_to_node('localhost', :worker_1_port);
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start_metadata_sync_to_node
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---------------------------------------------------------------------
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(1 row)
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-- Drop views and check metadata afterwards
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DROP VIEW prop_view_9 CASCADE;
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NOTICE: drop cascades to view prop_view_10
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DROP VIEW opt_prop_view, aliased_opt_prop_view, view_prop_schema_inner.inner_view_prop, sep_opt_prop_view;
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%inner_view_prop%';
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obj_identifier
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---------------------------------------------------------------------
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(0 rows)
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SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%opt_prop_view%';
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obj_identifier
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---------------------------------------------------------------------
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(0 rows)
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-- Drop a column that view depends on
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ALTER TABLE view_table_1 DROP COLUMN val_1 CASCADE;
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NOTICE: drop cascades to 3 other objects
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DETAIL: drop cascades to view prop_view_1
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drop cascades to view prop_view_3
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drop cascades to view prop_view_8
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-- Since prop_view_3 depends on the view_table_1's val_1 column, it should be dropped
|
|
SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_3%';
|
|
obj_identifier
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
-- Drop a table that view depends on
|
|
DROP TABLE view_table_2 CASCADE;
|
|
NOTICE: drop cascades to 2 other objects
|
|
DETAIL: drop cascades to view prop_view_2
|
|
drop cascades to constraint f_key_for_local_table on table view_table_3
|
|
NOTICE: drop cascades to constraint f_key_for_local_table_1420200 on table view_prop_schema.view_table_3_1420200
|
|
CONTEXT: SQL statement "SELECT citus_drop_all_shards(v_obj.objid, v_obj.schema_name, v_obj.object_name, drop_shards_metadata_only := false)"
|
|
PL/pgSQL function citus_drop_trigger() line XX at PERFORM
|
|
NOTICE: removing table view_prop_schema.view_table_3 from metadata as it is not connected to any reference tables via foreign keys
|
|
-- Since prop_view_2 depends on the view_table_2, it should be dropped
|
|
SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%prop_view_2%';
|
|
obj_identifier
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
-- Show that unsupported CREATE OR REPLACE VIEW commands are catched by PG on the coordinator
|
|
CREATE TABLE table_to_test_unsup_view(id int, val1 text);
|
|
SELECT create_distributed_table('table_to_test_unsup_view', 'id');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE VIEW view_for_unsup_commands AS SELECT * FROM table_to_test_unsup_view;
|
|
CREATE OR REPLACE VIEW view_for_unsup_commands(a,b) AS SELECT * FROM table_to_test_unsup_view;
|
|
ERROR: cannot change name of view column "id" to "a"
|
|
HINT: Use ALTER VIEW ... RENAME COLUMN ... to change name of view column instead.
|
|
CREATE OR REPLACE VIEW view_for_unsup_commands AS SELECT id FROM table_to_test_unsup_view;
|
|
ERROR: cannot drop columns from view
|
|
-- ALTER VIEW PROPAGATION
|
|
CREATE TABLE alter_view_table(id int, val1 text);
|
|
SELECT create_distributed_table('alter_view_table','id');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE VIEW alter_view_1 AS SELECT * FROM alter_view_table table_name_for_view;
|
|
-- Set/drop default value is not supported by Citus
|
|
ALTER VIEW alter_view_1 ALTER COLUMN val1 SET DEFAULT random()::text;
|
|
ERROR: Citus doesn't support setting or resetting default values for a column of view
|
|
ALTER TABLE alter_view_1 ALTER COLUMN val1 SET DEFAULT random()::text;
|
|
ERROR: Citus doesn't support setting or resetting default values for a column of view
|
|
ALTER VIEW alter_view_1 ALTER COLUMN val1 DROP DEFAULT;
|
|
ERROR: Citus doesn't support setting or resetting default values for a column of view
|
|
ALTER TABLE alter_view_1 ALTER COLUMN val1 DROP DEFAULT;
|
|
ERROR: Citus doesn't support setting or resetting default values for a column of view
|
|
-- Set/reset options view alter view/alter table commands
|
|
ALTER VIEW alter_view_1 SET (check_option=cascaded);
|
|
ALTER VIEW alter_view_1 SET (security_barrier);
|
|
ALTER VIEW alter_view_1 SET (check_option=cascaded, security_barrier);
|
|
ALTER VIEW alter_view_1 SET (check_option=cascaded, security_barrier = true);
|
|
ALTER TABLE alter_view_1 SET (check_option=cascaded);
|
|
ALTER TABLE alter_view_1 SET (security_barrier);
|
|
ALTER TABLE alter_view_1 SET (check_option=cascaded, security_barrier);
|
|
ALTER TABLE alter_view_1 SET (check_option=cascaded, security_barrier = true);
|
|
-- Check the definition on both coordinator and worker node
|
|
SELECT definition FROM pg_views WHERE viewname = 'alter_view_1';
|
|
definition
|
|
---------------------------------------------------------------------
|
|
SELECT id, +
|
|
val1 +
|
|
FROM alter_view_table table_name_for_view;
|
|
(1 row)
|
|
|
|
SELECT relname, reloptions
|
|
FROM pg_class
|
|
WHERE oid = 'view_prop_schema.alter_view_1'::regclass::oid;
|
|
relname | reloptions
|
|
---------------------------------------------------------------------
|
|
alter_view_1 | {check_option=cascaded,security_barrier=true}
|
|
(1 row)
|
|
|
|
\c - - - :worker_1_port
|
|
SELECT definition FROM pg_views WHERE viewname = 'alter_view_1';
|
|
definition
|
|
---------------------------------------------------------------------
|
|
SELECT id, +
|
|
val1 +
|
|
FROM view_prop_schema.alter_view_table table_name_for_view;
|
|
(1 row)
|
|
|
|
SELECT relname, reloptions
|
|
FROM pg_class
|
|
WHERE oid = 'view_prop_schema.alter_view_1'::regclass::oid;
|
|
relname | reloptions
|
|
---------------------------------------------------------------------
|
|
alter_view_1 | {check_option=cascaded,security_barrier=true}
|
|
(1 row)
|
|
|
|
\c - - - :master_port
|
|
SET search_path to view_prop_schema;
|
|
ALTER TABLE alter_view_1 RESET (check_option, security_barrier);
|
|
ALTER VIEW alter_view_1 RESET (check_option, security_barrier);
|
|
-- Change the schema of the view
|
|
ALTER TABLE alter_view_1 SET SCHEMA view_prop_schema_inner;
|
|
ALTER VIEW view_prop_schema_inner.alter_view_1 SET SCHEMA view_prop_schema;
|
|
-- Rename view and view's column name
|
|
ALTER VIEW alter_view_1 RENAME COLUMN val1 TO val2;
|
|
ALTER VIEW alter_view_1 RENAME val2 TO val1;
|
|
ALTER VIEW alter_view_1 RENAME TO alter_view_2;
|
|
ALTER TABLE alter_view_2 RENAME COLUMN val1 TO val2;
|
|
ALTER TABLE alter_view_2 RENAME val2 TO val1;
|
|
ALTER TABLE alter_view_2 RENAME TO alter_view_1;
|
|
-- Alter owner vith alter view/alter table
|
|
SET client_min_messages TO ERROR;
|
|
CREATE USER alter_view_user;
|
|
SELECT 1 FROM run_command_on_workers($$CREATE USER alter_view_user;$$);
|
|
?column?
|
|
---------------------------------------------------------------------
|
|
1
|
|
1
|
|
(2 rows)
|
|
|
|
RESET client_min_messages;
|
|
ALTER VIEW alter_view_1 OWNER TO alter_view_user;
|
|
ALTER TABLE alter_view_1 OWNER TO alter_view_user;
|
|
-- Alter view owned by extension
|
|
CREATE TABLE table_for_ext_owned_view(id int);
|
|
CREATE VIEW extension_owned_view AS SELECT * FROM table_for_ext_owned_view;
|
|
WARNING: "view extension_owned_view" has dependency to "table table_for_ext_owned_view" that is not in Citus' metadata
|
|
DETAIL: "view extension_owned_view" will be created only locally
|
|
HINT: Distribute "table table_for_ext_owned_view" first to distribute "view extension_owned_view"
|
|
CREATE EXTENSION seg;
|
|
ALTER EXTENSION seg ADD VIEW extension_owned_view;
|
|
NOTICE: Citus does not propagate adding/dropping member objects
|
|
HINT: You can add/drop the member objects on the workers as well.
|
|
SELECT create_distributed_table('table_for_ext_owned_view','id');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE OR REPLACE VIEW extension_owned_view AS SELECT * FROM table_for_ext_owned_view;
|
|
-- Since the view is owned by extension Citus shouldn't propagate it
|
|
SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%extension_owned_view%';
|
|
obj_identifier
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
-- Try syncing metadata after running ALTER VIEW commands
|
|
SELECT start_metadata_sync_to_node('localhost', :worker_1_port);
|
|
start_metadata_sync_to_node
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
-- Alter non-existing view
|
|
ALTER VIEW IF EXISTS non_existing_view ALTER COLUMN val1 SET DEFAULT random()::text;
|
|
NOTICE: relation "non_existing_view" does not exist, skipping
|
|
ALTER VIEW IF EXISTS non_existing_view SET (check_option=cascaded);
|
|
NOTICE: relation "non_existing_view" does not exist, skipping
|
|
ALTER VIEW IF EXISTS non_existing_view RENAME COLUMN val1 TO val2;
|
|
NOTICE: relation "non_existing_view" does not exist, skipping
|
|
ALTER VIEW IF EXISTS non_existing_view RENAME val2 TO val1;
|
|
NOTICE: relation "non_existing_view" does not exist, skipping
|
|
ALTER VIEW IF EXISTS non_existing_view SET SCHEMA view_prop_schema;
|
|
NOTICE: relation "non_existing_view" does not exist, skipping
|
|
-- Show that privileges should be granted to both view and depending table
|
|
-- Set shard id seq and shard replication factor for consistent test result
|
|
ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 1900000;
|
|
SET citus.shard_count to 1;
|
|
CREATE USER grant_view_user;
|
|
CREATE TABLE table_to_test_grant_view(id int, val1 text);
|
|
SELECT create_distributed_table('table_to_test_grant_view','id');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE VIEW view_to_test_grant_view AS SELECT * FROM table_to_test_grant_view;
|
|
GRANT ALL ON SCHEMA view_prop_schema TO grant_view_user;
|
|
GRANT ALL ON view_to_test_grant_view TO grant_view_user;
|
|
SET ROLE grant_view_user;
|
|
-- Should fail since required privileges for dependent tables haven't been granted
|
|
SELECT count(*) FROM view_to_test_grant_view;
|
|
ERROR: permission denied for table table_to_test_grant_view_1900000
|
|
CONTEXT: while executing command on localhost:xxxxx
|
|
RESET ROLE;
|
|
\c - grant_view_user - :worker_1_port
|
|
-- Should it fails in a same way on the worker ndoe
|
|
SET search_path to view_prop_schema;
|
|
SELECT count(*) FROM view_to_test_grant_view;
|
|
ERROR: permission denied for table table_to_test_grant_view_1900000
|
|
\c - postgres - :master_port
|
|
SET search_path to view_prop_schema;
|
|
GRANT ALL ON table_to_test_grant_view TO grant_view_user;
|
|
SET ROLE grant_view_user;
|
|
-- Should work now as privileges for the table have been granted
|
|
SELECT count(*) FROM view_to_test_grant_view;
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
RESET ROLE;
|
|
RESET citus.shard_count;
|
|
-- Show that create view and alter view commands can be run from same transaction
|
|
-- but not the drop view. Since we can not use metadata connection for drop view commands
|
|
BEGIN;
|
|
SET LOCAL citus.force_max_query_parallelization TO ON;
|
|
CREATE TABLE table_1_to_view_in_transaction(a int);
|
|
SELECT create_distributed_table('table_1_to_view_in_transaction', 'a');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE TABLE table_2_to_view_in_transaction(a int);
|
|
SELECT create_distributed_table('table_2_to_view_in_transaction', 'a');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
-- we can create/alter/drop views even in parallel mode
|
|
CREATE VIEW view_in_transaction AS SELECT table_1_to_view_in_transaction.* FROM table_2_to_view_in_transaction JOIN table_1_to_view_in_transaction USING (a);
|
|
ALTER TABLE view_in_transaction SET (security_barrier);
|
|
ALTER VIEW view_in_transaction SET SCHEMA public;
|
|
ALTER VIEW public.view_in_transaction SET SCHEMA view_prop_schema_inner;
|
|
ALTER TABLE view_prop_schema_inner.view_in_transaction RENAME COLUMN a TO b;
|
|
DROP VIEW view_prop_schema_inner.view_in_transaction;
|
|
ERROR: cannot run view command because there was a parallel operation on a distributed table in the transaction
|
|
DETAIL: When running command on/for a distributed view, Citus needs to perform all operations over a single connection per node to ensure consistency.
|
|
HINT: Try re-running the transaction with "SET LOCAL citus.multi_shard_modify_mode TO 'sequential';"
|
|
ROLLBACK;
|
|
-- verify that the views get distributed after the table is distributed
|
|
create table table_to_depend_on_1 (a int);
|
|
create table table_to_depend_on_2 (a int);
|
|
-- the first view depends on a table
|
|
create view dependent_view_1 as select count(*) from table_to_depend_on_1;
|
|
WARNING: "view dependent_view_1" has dependency to "table table_to_depend_on_1" that is not in Citus' metadata
|
|
DETAIL: "view dependent_view_1" will be created only locally
|
|
HINT: Distribute "table table_to_depend_on_1" first to distribute "view dependent_view_1"
|
|
-- the second view depends on two tables
|
|
create view dependent_view_2 as select count(*) from table_to_depend_on_1 join table_to_depend_on_2 on table_to_depend_on_1.a=table_to_depend_on_2.a;
|
|
WARNING: "view dependent_view_2" has dependency to "table table_to_depend_on_2" that is not in Citus' metadata
|
|
DETAIL: "view dependent_view_2" will be created only locally
|
|
HINT: Distribute "table table_to_depend_on_2" first to distribute "view dependent_view_2"
|
|
-- the third view depends on the first view
|
|
create view dependent_view_3 as select count(*) from table_to_depend_on_1;
|
|
WARNING: "view dependent_view_3" has dependency to "table table_to_depend_on_1" that is not in Citus' metadata
|
|
DETAIL: "view dependent_view_3" will be created only locally
|
|
HINT: Distribute "table table_to_depend_on_1" first to distribute "view dependent_view_3"
|
|
-- the fourth view depends on the second view
|
|
create view dependent_view_4 as select count(*) from table_to_depend_on_2;
|
|
WARNING: "view dependent_view_4" has dependency to "table table_to_depend_on_2" that is not in Citus' metadata
|
|
DETAIL: "view dependent_view_4" will be created only locally
|
|
HINT: Distribute "table table_to_depend_on_2" first to distribute "view dependent_view_4"
|
|
-- distribute only one table
|
|
select create_distributed_table('table_to_depend_on_1','a');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
-- see all four views on the coordinator
|
|
select viewname from pg_views where viewname like 'dependent_view__';
|
|
viewname
|
|
---------------------------------------------------------------------
|
|
dependent_view_1
|
|
dependent_view_2
|
|
dependent_view_3
|
|
dependent_view_4
|
|
(4 rows)
|
|
|
|
\c - - - :worker_1_port
|
|
-- see 1st and 3rd view on the worker
|
|
select viewname from pg_views where viewname like 'dependent_view__';
|
|
viewname
|
|
---------------------------------------------------------------------
|
|
dependent_view_1
|
|
dependent_view_3
|
|
(2 rows)
|
|
|
|
\c - - - :master_port
|
|
CREATE TABLE parent_1 (a INT UNIQUE) PARTITION BY RANGE(a);
|
|
SELECT create_distributed_table('parent_1','a');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE TABLE parent_1_child_1 (a int);
|
|
CREATE TABLE parent_1_child_2 (a int);
|
|
CREATE VIEW v1 AS SELECT * FROM parent_1_child_1;
|
|
WARNING: "view v1" has dependency to "table parent_1_child_1" that is not in Citus' metadata
|
|
DETAIL: "view v1" will be created only locally
|
|
HINT: Distribute "table parent_1_child_1" first to distribute "view v1"
|
|
CREATE VIEW v2 AS SELECT * FROM parent_1_child_2;
|
|
WARNING: "view v2" has dependency to "table parent_1_child_2" that is not in Citus' metadata
|
|
DETAIL: "view v2" will be created only locally
|
|
HINT: Distribute "table parent_1_child_2" first to distribute "view v2"
|
|
CREATE VIEW v3 AS SELECT parent_1_child_2.* FROM parent_1_child_2 JOIN parent_1_child_1 USING(a);
|
|
WARNING: "view v3" has dependency to "table parent_1_child_2" that is not in Citus' metadata
|
|
DETAIL: "view v3" will be created only locally
|
|
HINT: Distribute "table parent_1_child_2" first to distribute "view v3"
|
|
CREATE VIEW v4 AS SELECT * FROM v3;
|
|
WARNING: "view v4" has dependency to "table parent_1_child_2" that is not in Citus' metadata
|
|
DETAIL: "view v4" will be created only locally
|
|
HINT: Distribute "table parent_1_child_2" first to distribute "view v4"
|
|
alter table parent_1 attach partition parent_1_child_1 FOR VALUES FROM (0) TO (10) ;
|
|
-- only v1 distributed
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v1$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,t,0)
|
|
(localhost,57638,t,0)
|
|
(2 rows)
|
|
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v2$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,f,"ERROR: relation ""v2"" does not exist")
|
|
(localhost,57638,f,"ERROR: relation ""v2"" does not exist")
|
|
(2 rows)
|
|
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v3$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,f,"ERROR: relation ""v3"" does not exist")
|
|
(localhost,57638,f,"ERROR: relation ""v3"" does not exist")
|
|
(2 rows)
|
|
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v4$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,f,"ERROR: relation ""v4"" does not exist")
|
|
(localhost,57638,f,"ERROR: relation ""v4"" does not exist")
|
|
(2 rows)
|
|
|
|
-- all views becomes distributed
|
|
alter table parent_1 attach partition parent_1_child_2 FOR VALUES FROM (10) TO (20);
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v1$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,t,0)
|
|
(localhost,57638,t,0)
|
|
(2 rows)
|
|
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v2$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,t,0)
|
|
(localhost,57638,t,0)
|
|
(2 rows)
|
|
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v3$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,t,0)
|
|
(localhost,57638,t,0)
|
|
(2 rows)
|
|
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v4$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,t,0)
|
|
(localhost,57638,t,0)
|
|
(2 rows)
|
|
|
|
SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%v1%';
|
|
obj_identifier
|
|
---------------------------------------------------------------------
|
|
(view,"{public,v1}",{})
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%v2%';
|
|
obj_identifier
|
|
---------------------------------------------------------------------
|
|
(view,"{public,v2}",{})
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%v3%';
|
|
obj_identifier
|
|
---------------------------------------------------------------------
|
|
(view,"{public,v3}",{})
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT pg_identify_object_as_address(classid, objid, objsubid) as obj_identifier from pg_catalog.pg_dist_object) as obj_identifiers where obj_identifier::text like '%v4%';
|
|
obj_identifier
|
|
---------------------------------------------------------------------
|
|
(view,"{public,v4}",{})
|
|
(1 row)
|
|
|
|
CREATE TABLE employees (employee_id int, manager_id int, full_name text);
|
|
-- v_test_1 and v_test_2 becomes circularly dependend views
|
|
-- so we should not try to distribute any of the views
|
|
CREATE VIEW v_test_1 AS SELECT * FROM employees;
|
|
WARNING: "view v_test_1" has dependency to "table employees" that is not in Citus' metadata
|
|
DETAIL: "view v_test_1" will be created only locally
|
|
HINT: Distribute "table employees" first to distribute "view v_test_1"
|
|
CREATE VIEW v_test_2 AS SELECT * FROM employees;
|
|
WARNING: "view v_test_2" has dependency to "table employees" that is not in Citus' metadata
|
|
DETAIL: "view v_test_2" will be created only locally
|
|
HINT: Distribute "table employees" first to distribute "view v_test_2"
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|
CREATE OR REPLACE VIEW v_test_1 AS SELECT employees.* FROM employees JOIN v_test_2 USING (employee_id);
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|
WARNING: "view v_test_1" has dependency to "table employees" that is not in Citus' metadata
|
|
DETAIL: "view v_test_1" will be created only locally
|
|
HINT: Distribute "table employees" first to distribute "view v_test_1"
|
|
CREATE OR REPLACE VIEW v_test_2 AS SELECT employees.* FROM employees JOIN v_test_1 USING (employee_id);
|
|
WARNING: "view v_test_2" has dependency to "table employees" that is not in Citus' metadata
|
|
DETAIL: "view v_test_2" will be created only locally
|
|
HINT: Distribute "table employees" first to distribute "view v_test_2"
|
|
SELECT create_distributed_table('employees','employee_id');
|
|
ERROR: Citus can not handle circular dependencies between distributed objects
|
|
DETAIL: "view v_test_1" circularly depends itself, resolve circular dependency first
|
|
-- verify not distributed
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v_test_1$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,f,"ERROR: relation ""v_test_1"" does not exist")
|
|
(localhost,57638,f,"ERROR: relation ""v_test_1"" does not exist")
|
|
(2 rows)
|
|
|
|
SELECT run_command_on_workers($$SELECT count(*) FROM v_test_2$$);
|
|
run_command_on_workers
|
|
---------------------------------------------------------------------
|
|
(localhost,57637,f,"ERROR: relation ""v_test_2"" does not exist")
|
|
(localhost,57638,f,"ERROR: relation ""v_test_2"" does not exist")
|
|
(2 rows)
|
|
|
|
-- create and drop temporary view
|
|
CREATE TEMPORARY VIEW temp_view_to_drop AS SELECT 1;
|
|
WARNING: "view temp_view_to_drop" has dependency on unsupported object "schema pg_temp_xxx"
|
|
DETAIL: "view temp_view_to_drop" will be created only locally
|
|
DROP VIEW temp_view_to_drop;
|
|
-- drop non-existent view
|
|
DROP VIEW IF EXISTS drop_the_nonexistent_view;
|
|
NOTICE: view "drop_the_nonexistent_view" does not exist, skipping
|
|
DROP VIEW IF EXISTS non_exist_view_schema.view_to_drop;
|
|
NOTICE: schema "non_exist_view_schema" does not exist, skipping
|
|
-- Check materialized view just for sanity
|
|
CREATE MATERIALIZED VIEW materialized_view_to_test AS SELECT 1;
|
|
DROP VIEW materialized_view_to_test;
|
|
ERROR: "materialized_view_to_test" is not a view
|
|
HINT: Use DROP MATERIALIZED VIEW to remove a materialized view.
|
|
DROP MATERIALIZED VIEW materialized_view_to_test;
|
|
CREATE SCHEMA axx;
|
|
create materialized view axx.temp_view_to_drop AS SELECT 1;
|
|
DROP VIEW axx.temp_view_to_drop;
|
|
ERROR: "temp_view_to_drop" is not a view
|
|
HINT: Use DROP MATERIALIZED VIEW to remove a materialized view.
|
|
DROP VIEW IF EXISTS axx.temp_view_to_drop;
|
|
ERROR: "temp_view_to_drop" is not a view
|
|
HINT: Use DROP MATERIALIZED VIEW to remove a materialized view.
|
|
DROP MATERIALIZED VIEW IF EXISTS axx.temp_view_to_drop;
|
|
DROP MATERIALIZED VIEW IF EXISTS axx.temp_view_to_drop;
|
|
NOTICE: materialized view "temp_view_to_drop" does not exist, skipping
|
|
-- Test the GUC citus.enforce_object_restrictions_for_local_objects
|
|
SET search_path to view_prop_schema;
|
|
CREATE TABLE local_t (a int);
|
|
-- tests when citus.enforce_object_restrictions_for_local_objects=true
|
|
SET citus.enforce_object_restrictions_for_local_objects TO true;
|
|
-- views will be created locally with warnings
|
|
CREATE VIEW vv1 as SELECT * FROM local_t;
|
|
WARNING: "view vv1" has dependency to "table local_t" that is not in Citus' metadata
|
|
DETAIL: "view vv1" will be created only locally
|
|
HINT: Distribute "table local_t" first to distribute "view vv1"
|
|
CREATE OR REPLACE VIEW vv2 as SELECT * FROM vv1;
|
|
WARNING: "view vv2" has dependency to "table local_t" that is not in Citus' metadata
|
|
DETAIL: "view vv2" will be created only locally
|
|
HINT: Distribute "table local_t" first to distribute "view vv2"
|
|
-- view will fail due to local circular dependency
|
|
CREATE OR REPLACE VIEW vv1 as SELECT * FROM vv2;
|
|
ERROR: Citus can not handle circular dependencies between distributed objects
|
|
DETAIL: "view vv1" circularly depends itself, resolve circular dependency first
|
|
-- local view with no citus relation dependency will be distributed
|
|
CREATE VIEW v_dist AS SELECT 1;
|
|
-- show that the view is in pg_dist_object
|
|
SELECT COUNT(*) FROM pg_dist_object WHERE objid = 'v_dist'::regclass;
|
|
count
|
|
---------------------------------------------------------------------
|
|
1
|
|
(1 row)
|
|
|
|
-- tests when citus.enforce_object_restrictions_for_local_objects=false
|
|
SET citus.enforce_object_restrictions_for_local_objects TO false;
|
|
SET citus.enable_unsupported_feature_messages TO false;
|
|
-- views will be created locally without errors OR warnings
|
|
CREATE VIEW vv3 as SELECT * FROM local_t;
|
|
CREATE OR REPLACE VIEW vv4 as SELECT * FROM vv3;
|
|
CREATE OR REPLACE VIEW vv3 as SELECT * FROM vv4;
|
|
-- show that views are NOT in pg_dist_object
|
|
SELECT COUNT(*) FROM pg_dist_object WHERE objid IN ('vv3'::regclass, 'vv4'::regclass);
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
-- local view with no citus relation dependency will NOT be distributed
|
|
CREATE VIEW v_local_only AS SELECT 1;
|
|
-- show that the view is NOT in pg_dist_object
|
|
SELECT COUNT(*) FROM pg_dist_object WHERE objid = 'v_local_only'::regclass;
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
-- distribute the local table and check the distribution of dependent views
|
|
SELECT create_distributed_table('local_t', 'a');
|
|
create_distributed_table
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
-- show that views with no circular dependency are in pg_dist_object
|
|
SELECT COUNT(*) FROM pg_dist_object WHERE objid IN ('vv1'::regclass, 'vv2'::regclass);
|
|
count
|
|
---------------------------------------------------------------------
|
|
2
|
|
(1 row)
|
|
|
|
-- show that views with circular dependency are NOT in pg_dist_object
|
|
SELECT COUNT(*) FROM pg_dist_object WHERE objid IN ('vv3'::regclass, 'vv4'::regclass);
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
-- show that we cannot re-create the circular views ever
|
|
CREATE OR REPLACE VIEW vv3 as SELECT * FROM local_t;
|
|
CREATE OR REPLACE VIEW vv4 as SELECT * FROM vv3;
|
|
CREATE OR REPLACE VIEW vv3 as SELECT * FROM vv4;
|
|
ERROR: Citus can not handle circular dependencies between distributed objects
|
|
DETAIL: "view vv3" circularly depends itself, resolve circular dependency first
|
|
RESET citus.enable_unsupported_feature_messages;
|
|
RESET citus.enforce_object_restrictions_for_local_objects;
|
|
SET client_min_messages TO ERROR;
|
|
DROP TABLE public.parent_1, public.employees CASCADE;
|
|
DROP SCHEMA view_prop_schema_inner CASCADE;
|
|
DROP SCHEMA view_prop_schema, axx CASCADE;
|
|
DROP ROLE view_creation_user, alter_view_user, grant_view_user;
|