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a4f774cf1c
Add a new SQL-callable function that returns the DDL statements needed to recreate a database. It takes a regdatabase argument and an optional VARIADIC text argument for options that are specified as alternating name/value pairs. The following options are supported: pretty (boolean) for formatted output, owner (boolean) to include OWNER and tablespace (boolean) to include TABLESPACE. The return is one or multiple rows where the first row is a CREATE DATABASE statement and subsequent rows are ALTER DATABASE statements to set some database properties. The caller must have CONNECT privilege on the target database. Author: Akshay Joshi <akshay.joshi@enterprisedb.com> Co-authored-by: Andrew Dunstan <andrew@dunslane.net> Co-authored-by: Euler Taveira <euler@eulerto.com> Reviewed-by: Japin Li <japinli@hotmail.com> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de> Reviewed-by: Quan Zongliang <quanzongliang@yeah.net> Discussion: https://postgr.es/m/CANxoLDc6FHBYJvcgOnZyS+jF0NUo3Lq_83-rttBuJgs9id_UDg@mail.gmail.com Discussion: https://postgr.es/m/e247c261-e3fb-4810-81e0-a65893170e94@dunslane.net
66 lines
2.3 KiB
PL/PgSQL
66 lines
2.3 KiB
PL/PgSQL
--
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-- Tests for pg_get_database_ddl()
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--
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-- To produce stable regression test output, strip locale/collation details
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-- from the DDL output. Uses a plain SQL function to avoid a PL/pgSQL
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-- dependency.
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CREATE OR REPLACE FUNCTION ddl_filter(ddl_input TEXT)
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RETURNS TEXT LANGUAGE sql AS $$
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SELECT regexp_replace(
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regexp_replace(
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regexp_replace(
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regexp_replace(
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regexp_replace(
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ddl_input,
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'\s*\mLOCALE_PROVIDER\M\s*=\s*([''"]?[^''"\s]+[''"]?)', '', 'gi'),
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'\s*LC_COLLATE\s*=\s*([''"])[^''"]*\1', '', 'gi'),
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'\s*LC_CTYPE\s*=\s*([''"])[^''"]*\1', '', 'gi'),
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'\s*\S*LOCALE\S*\s*=?\s*([''"])[^''"]*\1', '', 'gi'),
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'\s*\S*COLLATION\S*\s*=?\s*([''"])[^''"]*\1', '', 'gi')
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$$;
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CREATE ROLE regress_datdba;
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CREATE DATABASE regress_database_ddl
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ENCODING utf8 LC_COLLATE "C" LC_CTYPE "C" TEMPLATE template0
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OWNER regress_datdba;
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ALTER DATABASE regress_database_ddl CONNECTION_LIMIT 123;
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ALTER DATABASE regress_database_ddl SET random_page_cost = 2.0;
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ALTER ROLE regress_datdba IN DATABASE regress_database_ddl SET random_page_cost = 1.1;
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-- Database doesn't exist
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SELECT * FROM pg_get_database_ddl('regression_database');
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-- NULL value
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SELECT * FROM pg_get_database_ddl(NULL);
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-- Invalid option value (should error)
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SELECT * FROM pg_get_database_ddl('regress_database_ddl', 'owner', 'invalid');
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-- Duplicate option (should error)
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SELECT * FROM pg_get_database_ddl('regress_database_ddl', 'owner', 'false', 'owner', 'true');
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-- Without options
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SELECT ddl_filter(pg_get_database_ddl) FROM pg_get_database_ddl('regress_database_ddl');
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-- With owner
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SELECT ddl_filter(pg_get_database_ddl) FROM pg_get_database_ddl('regress_database_ddl', 'owner', 'true');
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-- Pretty-printed output
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\pset format unaligned
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SELECT ddl_filter(pg_get_database_ddl) FROM pg_get_database_ddl('regress_database_ddl', 'pretty', 'true', 'tablespace', 'false');
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\pset format aligned
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-- Permission check: revoke CONNECT on database
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CREATE ROLE regress_db_ddl_noaccess;
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REVOKE CONNECT ON DATABASE regress_database_ddl FROM PUBLIC;
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SET ROLE regress_db_ddl_noaccess;
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SELECT * FROM pg_get_database_ddl('regress_database_ddl'); -- should fail
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RESET ROLE;
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GRANT CONNECT ON DATABASE regress_database_ddl TO PUBLIC;
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DROP ROLE regress_db_ddl_noaccess;
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DROP DATABASE regress_database_ddl;
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DROP FUNCTION ddl_filter(text);
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DROP ROLE regress_datdba;
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