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Create get-oid-table-postgresql.sql #346

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24 changes: 24 additions & 0 deletions table-operations/get-oid-postgres-table/get-oid-table-postgresql.sql
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Original file line number Diff line number Diff line change
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--get oid using pg_class
SELECT oid, relname
FROM pg_class
WHERE relname = 'student';

--get oid using pg_catalog.pg_class with pg_catalog.pg_namespace
SELECT c.oid, n.nspname AS schema_name, c.relname AS table_name
FROM pg_catalog.pg_class c
JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relname = 'student' AND n.nspname = 'public';

--get oid using pg_table_is_visible() and pg_class
SELECT c.oid, c.relname AS table_name
FROM pg_class c
WHERE c.relname = 'student' AND pg_table_is_visible(c.oid);

--get oid using regclass cast
SELECT 'public.student'::regclass::oid;

--Listing OIDs of All Tables
SELECT c.oid, n.nspname AS schema_name, c.relname AS table_name
FROM pg_class c
JOIN pg_namespace n ON n.oid = c.relnamespace
WHERE c.relkind = 'r';