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537898bd81
The relation creation is done at executor startup, however the main regression test suite is lacking scenarios where no data is inserted which is something that can happen when using EXECUTE or EXPLAIN with CREATE TABLE AS and WITH NO DATA. Some patches are worked on to reshape the way CTAS relations are created, so this makes sure that we do not miss some query patterns already supported. Reported-by: Andreas Karlsson Author: Michael Paquier Reviewed-by: Andreas Karlsson Discussion: https://postgr.es/m/20190206091817.GB14980@paquier.xyz
107 lines
3.2 KiB
PL/PgSQL
107 lines
3.2 KiB
PL/PgSQL
--
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-- SELECT_INTO
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--
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SELECT *
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INTO TABLE sitmp1
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FROM onek
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WHERE onek.unique1 < 2;
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DROP TABLE sitmp1;
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SELECT *
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INTO TABLE sitmp1
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FROM onek2
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WHERE onek2.unique1 < 2;
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DROP TABLE sitmp1;
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--
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-- SELECT INTO and INSERT permission, if owner is not allowed to insert.
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--
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CREATE SCHEMA selinto_schema;
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CREATE USER regress_selinto_user;
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ALTER DEFAULT PRIVILEGES FOR ROLE regress_selinto_user
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REVOKE INSERT ON TABLES FROM regress_selinto_user;
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GRANT ALL ON SCHEMA selinto_schema TO public;
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SET SESSION AUTHORIZATION regress_selinto_user;
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SELECT * INTO TABLE selinto_schema.tmp1
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FROM pg_class WHERE relname like '%a%'; -- Error
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SELECT oid AS clsoid, relname, relnatts + 10 AS x
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INTO selinto_schema.tmp2
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FROM pg_class WHERE relname like '%b%'; -- Error
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CREATE TABLE selinto_schema.tmp3 (a,b,c)
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AS SELECT oid,relname,relacl FROM pg_class
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WHERE relname like '%c%'; -- Error
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RESET SESSION AUTHORIZATION;
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ALTER DEFAULT PRIVILEGES FOR ROLE regress_selinto_user
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GRANT INSERT ON TABLES TO regress_selinto_user;
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SET SESSION AUTHORIZATION regress_selinto_user;
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SELECT * INTO TABLE selinto_schema.tmp1
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FROM pg_class WHERE relname like '%a%'; -- OK
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SELECT oid AS clsoid, relname, relnatts + 10 AS x
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INTO selinto_schema.tmp2
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FROM pg_class WHERE relname like '%b%'; -- OK
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CREATE TABLE selinto_schema.tmp3 (a,b,c)
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AS SELECT oid,relname,relacl FROM pg_class
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WHERE relname like '%c%'; -- OK
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RESET SESSION AUTHORIZATION;
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DROP SCHEMA selinto_schema CASCADE;
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DROP USER regress_selinto_user;
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-- Tests for WITH NO DATA and column name consistency
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CREATE TABLE ctas_base (i int, j int);
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INSERT INTO ctas_base VALUES (1, 2);
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CREATE TABLE ctas_nodata (ii, jj, kk) AS SELECT i, j FROM ctas_base; -- Error
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CREATE TABLE ctas_nodata (ii, jj, kk) AS SELECT i, j FROM ctas_base WITH NO DATA; -- Error
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CREATE TABLE ctas_nodata (ii, jj) AS SELECT i, j FROM ctas_base; -- OK
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CREATE TABLE ctas_nodata_2 (ii, jj) AS SELECT i, j FROM ctas_base WITH NO DATA; -- OK
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CREATE TABLE ctas_nodata_3 (ii) AS SELECT i, j FROM ctas_base; -- OK
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CREATE TABLE ctas_nodata_4 (ii) AS SELECT i, j FROM ctas_base WITH NO DATA; -- OK
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SELECT * FROM ctas_nodata;
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SELECT * FROM ctas_nodata_2;
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SELECT * FROM ctas_nodata_3;
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SELECT * FROM ctas_nodata_4;
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DROP TABLE ctas_base;
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DROP TABLE ctas_nodata;
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DROP TABLE ctas_nodata_2;
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DROP TABLE ctas_nodata_3;
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DROP TABLE ctas_nodata_4;
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--
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-- CREATE TABLE AS/SELECT INTO as last command in a SQL function
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-- have been known to cause problems
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--
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CREATE FUNCTION make_table() RETURNS VOID
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AS $$
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CREATE TABLE created_table AS SELECT * FROM int8_tbl;
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$$ LANGUAGE SQL;
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SELECT make_table();
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SELECT * FROM created_table;
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-- Try EXPLAIN ANALYZE SELECT INTO and EXPLAIN ANALYZE CREATE TABLE AS
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-- WITH NO DATA, but hide the outputs since they won't be stable.
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DO $$
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BEGIN
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EXECUTE 'EXPLAIN ANALYZE SELECT * INTO TABLE easi FROM int8_tbl';
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EXECUTE 'EXPLAIN ANALYZE CREATE TABLE easi2 AS SELECT * FROM int8_tbl WITH NO DATA';
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END$$;
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DROP TABLE created_table;
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DROP TABLE easi, easi2;
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--
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-- Disallowed uses of SELECT ... INTO. All should fail
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--
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DECLARE foo CURSOR FOR SELECT 1 INTO b;
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COPY (SELECT 1 INTO frak UNION SELECT 2) TO 'blob';
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SELECT * FROM (SELECT 1 INTO f) bar;
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CREATE VIEW foo AS SELECT 1 INTO b;
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INSERT INTO b SELECT 1 INTO f;
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