mirror of https://github.com/citusdata/citus.git
115 lines
3.9 KiB
Plaintext
115 lines
3.9 KiB
Plaintext
CREATE SCHEMA views_create;
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SET search_path TO views_create;
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CREATE TABLE view_test_table(a INT NOT NULL PRIMARY KEY, b BIGINT, c text);
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SELECT create_distributed_table('view_test_table', 'a');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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-- Since creating view distributed or locally depends on the arbitrary config
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-- set client_min_messages to ERROR to get consistent result.
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SET client_min_messages TO ERROR;
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CREATE OR REPLACE VIEW select_filtered_view AS
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SELECT * FROM view_test_table WHERE c = 'testing'
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WITH CASCADED CHECK OPTION;
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CREATE OR REPLACE VIEW select_all_view AS
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SELECT * FROM view_test_table
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WITH LOCAL CHECK OPTION;
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CREATE OR REPLACE VIEW count_view AS
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SELECT COUNT(*) FROM view_test_table;
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RESET client_min_messages;
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INSERT INTO view_test_table VALUES (1,1,'testing'), (2,1,'views');
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SELECT * FROM count_view;
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count
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---------------------------------------------------------------------
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2
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(1 row)
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SELECT COUNT(*) FROM count_view;
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count
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---------------------------------------------------------------------
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1
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(1 row)
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SELECT COUNT(*) FROM select_all_view;
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count
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---------------------------------------------------------------------
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2
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(1 row)
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SELECT * FROM select_filtered_view;
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a | b | c
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---------------------------------------------------------------------
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1 | 1 | testing
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(1 row)
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-- dummy temp recursive view
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CREATE TEMP RECURSIVE VIEW recursive_defined_non_recursive_view(c) AS (SELECT 1);
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WARNING: "view recursive_defined_non_recursive_view" has dependency on unsupported object "schema pg_temp_xxx"
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DETAIL: "view recursive_defined_non_recursive_view" will be created only locally
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CREATE MATERIALIZED VIEW select_all_matview AS
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SELECT * FROM view_test_table
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WITH DATA;
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CREATE MATERIALIZED VIEW IF NOT EXISTS select_filtered_matview AS
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SELECT * FROM view_test_table WHERE c = 'views'
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WITH NO DATA;
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REFRESH MATERIALIZED VIEW select_filtered_matview;
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SELECT COUNT(*) FROM select_all_matview;
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count
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---------------------------------------------------------------------
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2
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(1 row)
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SELECT * FROM select_filtered_matview;
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a | b | c
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---------------------------------------------------------------------
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2 | 1 | views
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(1 row)
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SELECT COUNT(*) FROM select_all_view a JOIN select_filtered_matview b ON a.c=b.c;
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count
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---------------------------------------------------------------------
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1
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(1 row)
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SELECT COUNT(*) FROM select_all_view a JOIN view_test_table b ON a.c=b.c;
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count
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---------------------------------------------------------------------
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2
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(1 row)
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CREATE TABLE distributed (id bigserial PRIMARY KEY,
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name text,
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created_at timestamptz DEFAULT now());
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CREATE TABLE reference (id bigserial PRIMARY KEY,
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title text);
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CREATE TABLE local (id bigserial PRIMARY KEY,
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title text);
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SET client_min_messages TO ERROR;
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CREATE VIEW "local regular view" AS SELECT * FROM local;
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CREATE VIEW dist_regular_view AS SELECT * FROM distributed;
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CREATE VIEW local_regular_view2 as SELECT count(*) FROM distributed JOIN "local regular view" USING (id);
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CREATE VIEW local_regular_view3 as SELECT count(*) FROM local JOIN dist_regular_view USING (id);
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CREATE VIEW "local regular view4" as SELECT count(*) as "my cny" FROM dist_regular_view JOIN "local regular view" USING (id);
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RESET client_min_messages;
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-- these above restrictions brought us to the following schema
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SELECT create_reference_table('reference');
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create_reference_table
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---------------------------------------------------------------------
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(1 row)
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SELECT create_distributed_table('distributed', 'id');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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SELECT create_reference_table('local');
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create_reference_table
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---------------------------------------------------------------------
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(1 row)
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