mirror of https://github.com/citusdata/citus.git
78 lines
2.8 KiB
SQL
78 lines
2.8 KiB
SQL
CREATE SCHEMA "object prop";
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SET search_path TO "object prop";
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CREATE OR REPLACE FUNCTION citus_get_all_dependencies_for_object(classid oid, objid oid, objsubid int)
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RETURNS SETOF RECORD
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LANGUAGE C STRICT
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AS 'citus', $$citus_get_all_dependencies_for_object$$;
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COMMENT ON FUNCTION citus_get_all_dependencies_for_object(classid oid, objid oid, objsubid int)
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IS 'emulate what Citus would qualify as dependency when adding a new node';
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CREATE OR REPLACE FUNCTION citus_get_dependencies_for_object(classid oid, objid oid, objsubid int)
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RETURNS SETOF RECORD
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LANGUAGE C STRICT
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AS 'citus', $$citus_get_dependencies_for_object$$;
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COMMENT ON FUNCTION citus_get_dependencies_for_object(classid oid, objid oid, objsubid int)
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IS 'emulate what Citus would qualify as dependency when creating the object';
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create type t1 as (a int);
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create table test(a int, b t1);
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SELECT create_distributed_table('test', 'a');
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CREATE VIEW v1 AS SELECT * FROM test;
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-- find all the dependencies of table test
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SELECT
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pg_identify_object(t.classid, t.objid, t.objsubid)
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FROM
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(SELECT * FROM pg_get_object_address('table', '{test}', '{}')) as addr
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JOIN LATERAL
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citus_get_all_dependencies_for_object(addr.classid, addr.objid, addr.objsubid) as t(classid oid, objid oid, objsubid int)
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ON TRUE
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ORDER BY 1;
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-- find all the dependencies of view v1
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SELECT
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pg_identify_object(t.classid, t.objid, t.objsubid)
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FROM
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(SELECT * FROM pg_get_object_address('view', '{v1}', '{}')) as addr
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JOIN LATERAL
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citus_get_all_dependencies_for_object(addr.classid, addr.objid, addr.objsubid) as t(classid oid, objid oid, objsubid int)
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ON TRUE
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ORDER BY 1;
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-- find all the dependencies of type t1
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SELECT
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pg_identify_object(t.classid, t.objid, t.objsubid)
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FROM
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(SELECT * FROM pg_get_object_address('type', '{t1}', '{}')) as addr
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JOIN LATERAL
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citus_get_all_dependencies_for_object(addr.classid, addr.objid, addr.objsubid) as t(classid oid, objid oid, objsubid int)
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ON TRUE
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ORDER BY 1;
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-- find non-distributed dependencies of table test
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SELECT
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pg_identify_object(t.classid, t.objid, t.objsubid)
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FROM
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(SELECT * FROM pg_get_object_address('table', '{test}', '{}')) as addr
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JOIN LATERAL
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citus_get_dependencies_for_object(addr.classid, addr.objid, addr.objsubid) as t(classid oid, objid oid, objsubid int)
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ON TRUE
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ORDER BY 1;
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-- find non-distributed dependencies of the local table test2
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CREATE SCHEMA objectprop2;
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create table objectprop2.test2(a int, b t1);
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SET search_path TO objectprop2;
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SELECT
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pg_identify_object(t.classid, t.objid, t.objsubid)
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FROM
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(SELECT * FROM pg_get_object_address('table', '{test2}', '{}')) as addr
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JOIN LATERAL
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"object prop".citus_get_dependencies_for_object(addr.classid, addr.objid, addr.objsubid) as t(classid oid, objid oid, objsubid int)
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ON TRUE
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ORDER BY 1;
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SET client_min_messages TO ERROR;
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DROP SCHEMA "object prop", objectprop2 CASCADE;
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