819 lines
25 KiB
PL/PgSQL
819 lines
25 KiB
PL/PgSQL
--
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-- CREATE_VIEW
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-- Virtual class definitions
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-- (this also tests the query rewrite system)
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--
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-- directory paths and dlsuffix are passed to us in environment variables
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\getenv abs_srcdir PG_ABS_SRCDIR
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\getenv libdir PG_LIBDIR
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\getenv dlsuffix PG_DLSUFFIX
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\set regresslib :libdir '/regress' :dlsuffix
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CREATE FUNCTION interpt_pp(path, path)
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RETURNS point
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AS :'regresslib'
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LANGUAGE C STRICT;
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CREATE TABLE real_city (
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pop int4,
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cname text,
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outline path
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);
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\set filename :abs_srcdir '/data/real_city.data'
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COPY real_city FROM :'filename';
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ANALYZE real_city;
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SELECT *
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INTO TABLE ramp
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FROM ONLY road
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WHERE name ~ '.*Ramp';
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CREATE VIEW street AS
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SELECT r.name, r.thepath, c.cname AS cname
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FROM ONLY road r, real_city c
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WHERE c.outline ?# r.thepath;
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CREATE VIEW iexit AS
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SELECT ih.name, ih.thepath,
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interpt_pp(ih.thepath, r.thepath) AS exit
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FROM ihighway ih, ramp r
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WHERE ih.thepath ?# r.thepath;
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CREATE VIEW toyemp AS
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SELECT name, age, location, 12*salary AS annualsal
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FROM emp;
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-- Test comments
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COMMENT ON VIEW noview IS 'no view';
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COMMENT ON VIEW toyemp IS 'is a view';
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COMMENT ON VIEW toyemp IS NULL;
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-- These views are left around mainly to exercise special cases in pg_dump.
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CREATE TABLE view_base_table (key int PRIMARY KEY, data varchar(20));
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CREATE VIEW key_dependent_view AS
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SELECT * FROM view_base_table GROUP BY key;
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ALTER TABLE view_base_table DROP CONSTRAINT view_base_table_pkey; -- fails
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CREATE VIEW key_dependent_view_no_cols AS
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SELECT FROM view_base_table GROUP BY key HAVING length(data) > 0;
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--
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-- CREATE OR REPLACE VIEW
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--
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CREATE TABLE viewtest_tbl (a int, b int, c numeric(10,1), d text COLLATE "C");
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COPY viewtest_tbl FROM stdin;
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5 10 1.1 xy
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10 15 2.2 xyz
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15 20 3.3 xyzz
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20 25 4.4 xyzzy
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\.
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CREATE OR REPLACE VIEW viewtest AS
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SELECT * FROM viewtest_tbl;
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CREATE OR REPLACE VIEW viewtest AS
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SELECT * FROM viewtest_tbl WHERE a > 10;
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SELECT * FROM viewtest;
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a, b, c, d FROM viewtest_tbl WHERE a > 5 ORDER BY b DESC;
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SELECT * FROM viewtest;
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-- should fail
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a FROM viewtest_tbl WHERE a <> 20;
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-- should fail
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CREATE OR REPLACE VIEW viewtest AS
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SELECT 1, * FROM viewtest_tbl;
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-- should fail
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a, b::numeric, c, d FROM viewtest_tbl;
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-- should fail
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a, b, c::numeric(10,2), d FROM viewtest_tbl;
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-- should fail
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a, b, c, d COLLATE "POSIX" FROM viewtest_tbl;
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-- should work
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a, b, c, d, 0 AS e FROM viewtest_tbl;
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DROP VIEW viewtest;
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DROP TABLE viewtest_tbl;
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-- tests for temporary views
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CREATE SCHEMA temp_view_test
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CREATE TABLE base_table (a int, id int)
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CREATE TABLE base_table2 (a int, id int);
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SET search_path TO temp_view_test, public;
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CREATE TEMPORARY TABLE temp_table (a int, id int);
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-- should be created in temp_view_test schema
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CREATE VIEW v1 AS SELECT * FROM base_table;
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-- should be created in temp object schema
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CREATE VIEW v1_temp AS SELECT * FROM temp_table;
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-- should be created in temp object schema
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CREATE TEMP VIEW v2_temp AS SELECT * FROM base_table;
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-- should be created in temp_views schema
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CREATE VIEW temp_view_test.v2 AS SELECT * FROM base_table;
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-- should fail
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CREATE VIEW temp_view_test.v3_temp AS SELECT * FROM temp_table;
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-- should fail
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CREATE SCHEMA test_view_schema
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CREATE TEMP VIEW testview AS SELECT 1;
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-- joins: if any of the join relations are temporary, the view
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-- should also be temporary
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-- should be non-temp
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CREATE VIEW v3 AS
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SELECT t1.a AS t1_a, t2.a AS t2_a
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FROM base_table t1, base_table2 t2
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WHERE t1.id = t2.id;
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-- should be temp (one join rel is temp)
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CREATE VIEW v4_temp AS
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SELECT t1.a AS t1_a, t2.a AS t2_a
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FROM base_table t1, temp_table t2
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WHERE t1.id = t2.id;
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-- should be temp
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CREATE VIEW v5_temp AS
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SELECT t1.a AS t1_a, t2.a AS t2_a, t3.a AS t3_a
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FROM base_table t1, base_table2 t2, temp_table t3
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WHERE t1.id = t2.id and t2.id = t3.id;
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-- subqueries
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CREATE VIEW v4 AS SELECT * FROM base_table WHERE id IN (SELECT id FROM base_table2);
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CREATE VIEW v5 AS SELECT t1.id, t2.a FROM base_table t1, (SELECT * FROM base_table2) t2;
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CREATE VIEW v6 AS SELECT * FROM base_table WHERE EXISTS (SELECT 1 FROM base_table2);
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CREATE VIEW v7 AS SELECT * FROM base_table WHERE NOT EXISTS (SELECT 1 FROM base_table2);
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CREATE VIEW v8 AS SELECT * FROM base_table WHERE EXISTS (SELECT 1);
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CREATE VIEW v6_temp AS SELECT * FROM base_table WHERE id IN (SELECT id FROM temp_table);
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CREATE VIEW v7_temp AS SELECT t1.id, t2.a FROM base_table t1, (SELECT * FROM temp_table) t2;
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CREATE VIEW v8_temp AS SELECT * FROM base_table WHERE EXISTS (SELECT 1 FROM temp_table);
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CREATE VIEW v9_temp AS SELECT * FROM base_table WHERE NOT EXISTS (SELECT 1 FROM temp_table);
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-- a view should also be temporary if it references a temporary view
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CREATE VIEW v10_temp AS SELECT * FROM v7_temp;
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CREATE VIEW v11_temp AS SELECT t1.id, t2.a FROM base_table t1, v10_temp t2;
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CREATE VIEW v12_temp AS SELECT true FROM v11_temp;
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-- a view should also be temporary if it references a temporary sequence
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CREATE SEQUENCE seq1;
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CREATE TEMPORARY SEQUENCE seq1_temp;
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CREATE VIEW v9 AS SELECT seq1.is_called FROM seq1;
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CREATE VIEW v13_temp AS SELECT seq1_temp.is_called FROM seq1_temp;
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SELECT relname FROM pg_class
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WHERE relname LIKE 'v_'
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AND relnamespace = (SELECT oid FROM pg_namespace WHERE nspname = 'temp_view_test')
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ORDER BY relname;
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SELECT relname FROM pg_class
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WHERE relname LIKE 'v%'
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AND relnamespace IN (SELECT oid FROM pg_namespace WHERE nspname LIKE 'pg_temp%')
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ORDER BY relname;
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CREATE SCHEMA testviewschm2;
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SET search_path TO testviewschm2, public;
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CREATE TABLE t1 (num int, name text);
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CREATE TABLE t2 (num2 int, value text);
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CREATE TEMP TABLE tt (num2 int, value text);
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CREATE VIEW nontemp1 AS SELECT * FROM t1 CROSS JOIN t2;
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CREATE VIEW temporal1 AS SELECT * FROM t1 CROSS JOIN tt;
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CREATE VIEW nontemp2 AS SELECT * FROM t1 INNER JOIN t2 ON t1.num = t2.num2;
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CREATE VIEW temporal2 AS SELECT * FROM t1 INNER JOIN tt ON t1.num = tt.num2;
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CREATE VIEW nontemp3 AS SELECT * FROM t1 LEFT JOIN t2 ON t1.num = t2.num2;
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CREATE VIEW temporal3 AS SELECT * FROM t1 LEFT JOIN tt ON t1.num = tt.num2;
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CREATE VIEW nontemp4 AS SELECT * FROM t1 LEFT JOIN t2 ON t1.num = t2.num2 AND t2.value = 'xxx';
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CREATE VIEW temporal4 AS SELECT * FROM t1 LEFT JOIN tt ON t1.num = tt.num2 AND tt.value = 'xxx';
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SELECT relname FROM pg_class
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WHERE relname LIKE 'nontemp%'
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AND relnamespace = (SELECT oid FROM pg_namespace WHERE nspname = 'testviewschm2')
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ORDER BY relname;
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SELECT relname FROM pg_class
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WHERE relname LIKE 'temporal%'
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AND relnamespace IN (SELECT oid FROM pg_namespace WHERE nspname LIKE 'pg_temp%')
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ORDER BY relname;
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CREATE TABLE tbl1 ( a int, b int);
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CREATE TABLE tbl2 (c int, d int);
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CREATE TABLE tbl3 (e int, f int);
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CREATE TABLE tbl4 (g int, h int);
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CREATE TEMP TABLE tmptbl (i int, j int);
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--Should be in testviewschm2
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CREATE VIEW pubview AS SELECT * FROM tbl1 WHERE tbl1.a
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BETWEEN (SELECT d FROM tbl2 WHERE c = 1) AND (SELECT e FROM tbl3 WHERE f = 2)
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AND EXISTS (SELECT g FROM tbl4 LEFT JOIN tbl3 ON tbl4.h = tbl3.f);
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SELECT count(*) FROM pg_class where relname = 'pubview'
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AND relnamespace IN (SELECT OID FROM pg_namespace WHERE nspname = 'testviewschm2');
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--Should be in temp object schema
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CREATE VIEW mytempview AS SELECT * FROM tbl1 WHERE tbl1.a
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BETWEEN (SELECT d FROM tbl2 WHERE c = 1) AND (SELECT e FROM tbl3 WHERE f = 2)
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AND EXISTS (SELECT g FROM tbl4 LEFT JOIN tbl3 ON tbl4.h = tbl3.f)
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AND NOT EXISTS (SELECT g FROM tbl4 LEFT JOIN tmptbl ON tbl4.h = tmptbl.j);
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SELECT count(*) FROM pg_class where relname LIKE 'mytempview'
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And relnamespace IN (SELECT OID FROM pg_namespace WHERE nspname LIKE 'pg_temp%');
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--
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-- CREATE VIEW and WITH(...) clause
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--
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CREATE VIEW mysecview1
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AS SELECT * FROM tbl1 WHERE a = 0;
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CREATE VIEW mysecview2 WITH (security_barrier=true)
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AS SELECT * FROM tbl1 WHERE a > 0;
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CREATE VIEW mysecview3 WITH (security_barrier=false)
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AS SELECT * FROM tbl1 WHERE a < 0;
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CREATE VIEW mysecview4 WITH (security_barrier)
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AS SELECT * FROM tbl1 WHERE a <> 0;
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CREATE VIEW mysecview5 WITH (security_barrier=100) -- Error
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AS SELECT * FROM tbl1 WHERE a > 100;
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CREATE VIEW mysecview6 WITH (invalid_option) -- Error
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AS SELECT * FROM tbl1 WHERE a < 100;
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CREATE VIEW mysecview7 WITH (security_invoker=true)
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AS SELECT * FROM tbl1 WHERE a = 100;
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CREATE VIEW mysecview8 WITH (security_invoker=false, security_barrier=true)
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AS SELECT * FROM tbl1 WHERE a > 100;
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CREATE VIEW mysecview9 WITH (security_invoker)
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AS SELECT * FROM tbl1 WHERE a < 100;
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CREATE VIEW mysecview10 WITH (security_invoker=100) -- Error
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AS SELECT * FROM tbl1 WHERE a <> 100;
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SELECT relname, relkind, reloptions FROM pg_class
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WHERE oid in ('mysecview1'::regclass, 'mysecview2'::regclass,
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'mysecview3'::regclass, 'mysecview4'::regclass,
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'mysecview7'::regclass, 'mysecview8'::regclass,
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'mysecview9'::regclass)
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ORDER BY relname;
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CREATE OR REPLACE VIEW mysecview1
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AS SELECT * FROM tbl1 WHERE a = 256;
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CREATE OR REPLACE VIEW mysecview2
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AS SELECT * FROM tbl1 WHERE a > 256;
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CREATE OR REPLACE VIEW mysecview3 WITH (security_barrier=true)
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AS SELECT * FROM tbl1 WHERE a < 256;
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CREATE OR REPLACE VIEW mysecview4 WITH (security_barrier=false)
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AS SELECT * FROM tbl1 WHERE a <> 256;
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CREATE OR REPLACE VIEW mysecview7
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AS SELECT * FROM tbl1 WHERE a > 256;
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CREATE OR REPLACE VIEW mysecview8 WITH (security_invoker=true)
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AS SELECT * FROM tbl1 WHERE a < 256;
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CREATE OR REPLACE VIEW mysecview9 WITH (security_invoker=false, security_barrier=true)
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AS SELECT * FROM tbl1 WHERE a <> 256;
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SELECT relname, relkind, reloptions FROM pg_class
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WHERE oid in ('mysecview1'::regclass, 'mysecview2'::regclass,
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'mysecview3'::regclass, 'mysecview4'::regclass,
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'mysecview7'::regclass, 'mysecview8'::regclass,
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'mysecview9'::regclass)
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ORDER BY relname;
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-- Check that unknown literals are converted to "text" in CREATE VIEW,
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-- so that we don't end up with unknown-type columns.
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CREATE VIEW unspecified_types AS
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SELECT 42 as i, 42.5 as num, 'foo' as u, 'foo'::unknown as u2, null as n;
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\d+ unspecified_types
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SELECT * FROM unspecified_types;
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-- This test checks that proper typmods are assigned in a multi-row VALUES
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CREATE VIEW tt1 AS
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SELECT * FROM (
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VALUES
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('abc'::varchar(3), '0123456789', 42, 'abcd'::varchar(4)),
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('0123456789', 'abc'::varchar(3), 42.12, 'abc'::varchar(4))
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) vv(a,b,c,d);
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\d+ tt1
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SELECT * FROM tt1;
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SELECT a::varchar(3) FROM tt1;
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DROP VIEW tt1;
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-- Test view decompilation in the face of relation renaming conflicts
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CREATE TABLE tt1 (f1 int, f2 int, f3 text);
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CREATE TABLE tx1 (x1 int, x2 int, x3 text);
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CREATE TABLE temp_view_test.tt1 (y1 int, f2 int, f3 text);
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CREATE VIEW aliased_view_1 AS
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select * from tt1
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where exists (select 1 from tx1 where tt1.f1 = tx1.x1);
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CREATE VIEW aliased_view_2 AS
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select * from tt1 a1
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where exists (select 1 from tx1 where a1.f1 = tx1.x1);
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CREATE VIEW aliased_view_3 AS
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select * from tt1
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where exists (select 1 from tx1 a2 where tt1.f1 = a2.x1);
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CREATE VIEW aliased_view_4 AS
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select * from temp_view_test.tt1
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where exists (select 1 from tt1 where temp_view_test.tt1.y1 = tt1.f1);
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\d+ aliased_view_1
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\d+ aliased_view_2
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\d+ aliased_view_3
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\d+ aliased_view_4
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ALTER TABLE tx1 RENAME TO a1;
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\d+ aliased_view_1
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\d+ aliased_view_2
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\d+ aliased_view_3
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\d+ aliased_view_4
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ALTER TABLE tt1 RENAME TO a2;
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\d+ aliased_view_1
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\d+ aliased_view_2
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\d+ aliased_view_3
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\d+ aliased_view_4
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ALTER TABLE a1 RENAME TO tt1;
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\d+ aliased_view_1
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\d+ aliased_view_2
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\d+ aliased_view_3
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\d+ aliased_view_4
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ALTER TABLE a2 RENAME TO tx1;
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ALTER TABLE tx1 SET SCHEMA temp_view_test;
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\d+ aliased_view_1
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\d+ aliased_view_2
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\d+ aliased_view_3
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\d+ aliased_view_4
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ALTER TABLE temp_view_test.tt1 RENAME TO tmp1;
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ALTER TABLE temp_view_test.tmp1 SET SCHEMA testviewschm2;
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ALTER TABLE tmp1 RENAME TO tx1;
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\d+ aliased_view_1
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\d+ aliased_view_2
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\d+ aliased_view_3
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\d+ aliased_view_4
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-- Test aliasing of joins
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create view view_of_joins as
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select * from
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(select * from (tbl1 cross join tbl2) same) ss,
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(tbl3 cross join tbl4) same;
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\d+ view_of_joins
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create table tbl1a (a int, c int);
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create view view_of_joins_2a as select * from tbl1 join tbl1a using (a);
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create view view_of_joins_2b as select * from tbl1 join tbl1a using (a) as x;
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create view view_of_joins_2c as select * from (tbl1 join tbl1a using (a)) as y;
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create view view_of_joins_2d as select * from (tbl1 join tbl1a using (a) as x) as y;
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select pg_get_viewdef('view_of_joins_2a', true);
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select pg_get_viewdef('view_of_joins_2b', true);
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select pg_get_viewdef('view_of_joins_2c', true);
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select pg_get_viewdef('view_of_joins_2d', true);
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-- Test view decompilation in the face of column addition/deletion/renaming
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create table tt2 (a int, b int, c int);
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create table tt3 (ax int8, b int2, c numeric);
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create table tt4 (ay int, b int, q int);
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create view v1 as select * from tt2 natural join tt3;
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create view v1a as select * from (tt2 natural join tt3) j;
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create view v2 as select * from tt2 join tt3 using (b,c) join tt4 using (b);
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create view v2a as select * from (tt2 join tt3 using (b,c) join tt4 using (b)) j;
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create view v3 as select * from tt2 join tt3 using (b,c) full join tt4 using (b);
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select pg_get_viewdef('v1', true);
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select pg_get_viewdef('v1a', true);
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select pg_get_viewdef('v2', true);
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select pg_get_viewdef('v2a', true);
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select pg_get_viewdef('v3', true);
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alter table tt2 add column d int;
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alter table tt2 add column e int;
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select pg_get_viewdef('v1', true);
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select pg_get_viewdef('v1a', true);
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select pg_get_viewdef('v2', true);
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select pg_get_viewdef('v2a', true);
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select pg_get_viewdef('v3', true);
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alter table tt3 rename c to d;
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select pg_get_viewdef('v1', true);
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select pg_get_viewdef('v1a', true);
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select pg_get_viewdef('v2', true);
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select pg_get_viewdef('v2a', true);
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select pg_get_viewdef('v3', true);
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alter table tt3 add column c int;
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alter table tt3 add column e int;
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select pg_get_viewdef('v1', true);
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select pg_get_viewdef('v1a', true);
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select pg_get_viewdef('v2', true);
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select pg_get_viewdef('v2a', true);
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select pg_get_viewdef('v3', true);
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alter table tt2 drop column d;
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select pg_get_viewdef('v1', true);
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select pg_get_viewdef('v1a', true);
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select pg_get_viewdef('v2', true);
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select pg_get_viewdef('v2a', true);
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select pg_get_viewdef('v3', true);
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create table tt5 (a int, b int);
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create table tt6 (c int, d int);
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create view vv1 as select * from (tt5 cross join tt6) j(aa,bb,cc,dd);
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select pg_get_viewdef('vv1', true);
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alter table tt5 add column c int;
|
|
select pg_get_viewdef('vv1', true);
|
|
alter table tt5 add column cc int;
|
|
select pg_get_viewdef('vv1', true);
|
|
alter table tt5 drop column c;
|
|
select pg_get_viewdef('vv1', true);
|
|
|
|
create view v4 as select * from v1;
|
|
alter view v1 rename column a to x;
|
|
select pg_get_viewdef('v1', true);
|
|
select pg_get_viewdef('v4', true);
|
|
|
|
|
|
-- Unnamed FULL JOIN USING is lots of fun too
|
|
|
|
create table tt7 (x int, xx int, y int);
|
|
alter table tt7 drop column xx;
|
|
create table tt8 (x int, z int);
|
|
|
|
create view vv2 as
|
|
select * from (values(1,2,3,4,5)) v(a,b,c,d,e)
|
|
union all
|
|
select * from tt7 full join tt8 using (x), tt8 tt8x;
|
|
|
|
select pg_get_viewdef('vv2', true);
|
|
|
|
create view vv3 as
|
|
select * from (values(1,2,3,4,5,6)) v(a,b,c,x,e,f)
|
|
union all
|
|
select * from
|
|
tt7 full join tt8 using (x),
|
|
tt7 tt7x full join tt8 tt8x using (x);
|
|
|
|
select pg_get_viewdef('vv3', true);
|
|
|
|
create view vv4 as
|
|
select * from (values(1,2,3,4,5,6,7)) v(a,b,c,x,e,f,g)
|
|
union all
|
|
select * from
|
|
tt7 full join tt8 using (x),
|
|
tt7 tt7x full join tt8 tt8x using (x) full join tt8 tt8y using (x);
|
|
|
|
select pg_get_viewdef('vv4', true);
|
|
|
|
alter table tt7 add column zz int;
|
|
alter table tt7 add column z int;
|
|
alter table tt7 drop column zz;
|
|
alter table tt8 add column z2 int;
|
|
|
|
select pg_get_viewdef('vv2', true);
|
|
select pg_get_viewdef('vv3', true);
|
|
select pg_get_viewdef('vv4', true);
|
|
|
|
-- Implicit coercions in a JOIN USING create issues similar to FULL JOIN
|
|
|
|
create table tt7a (x date, xx int, y int);
|
|
alter table tt7a drop column xx;
|
|
create table tt8a (x timestamptz, z int);
|
|
|
|
create view vv2a as
|
|
select * from (values(now(),2,3,now(),5)) v(a,b,c,d,e)
|
|
union all
|
|
select * from tt7a left join tt8a using (x), tt8a tt8ax;
|
|
|
|
select pg_get_viewdef('vv2a', true);
|
|
|
|
--
|
|
-- Also check dropping a column that existed when the view was made
|
|
--
|
|
|
|
create table tt9 (x int, xx int, y int);
|
|
create table tt10 (x int, z int);
|
|
|
|
create view vv5 as select x,y,z from tt9 join tt10 using(x);
|
|
|
|
select pg_get_viewdef('vv5', true);
|
|
|
|
alter table tt9 drop column xx;
|
|
|
|
select pg_get_viewdef('vv5', true);
|
|
|
|
--
|
|
-- Another corner case is that we might add a column to a table below a
|
|
-- JOIN USING, and thereby make the USING column name ambiguous
|
|
--
|
|
|
|
create table tt11 (x int, y int);
|
|
create table tt12 (x int, z int);
|
|
create table tt13 (z int, q int);
|
|
|
|
create view vv6 as select x,y,z,q from
|
|
(tt11 join tt12 using(x)) join tt13 using(z);
|
|
|
|
select pg_get_viewdef('vv6', true);
|
|
|
|
alter table tt11 add column z int;
|
|
|
|
select pg_get_viewdef('vv6', true);
|
|
|
|
--
|
|
-- Check cases involving dropped/altered columns in a function's rowtype result
|
|
--
|
|
|
|
create table tt14t (f1 text, f2 text, f3 text, f4 text);
|
|
insert into tt14t values('foo', 'bar', 'baz', '42');
|
|
|
|
alter table tt14t drop column f2;
|
|
|
|
create function tt14f() returns setof tt14t as
|
|
$$
|
|
declare
|
|
rec1 record;
|
|
begin
|
|
for rec1 in select * from tt14t
|
|
loop
|
|
return next rec1;
|
|
end loop;
|
|
end;
|
|
$$
|
|
language plpgsql;
|
|
|
|
create view tt14v as select t.* from tt14f() t;
|
|
|
|
select pg_get_viewdef('tt14v', true);
|
|
select * from tt14v;
|
|
|
|
alter table tt14t drop column f3; -- fail, view has explicit reference to f3
|
|
|
|
-- We used to have a bug that would allow the above to succeed, posing
|
|
-- hazards for later execution of the view. Check that the internal
|
|
-- defenses for those hazards haven't bit-rotted, in case some other
|
|
-- bug with similar symptoms emerges.
|
|
begin;
|
|
|
|
-- destroy the dependency entry that prevents the DROP:
|
|
delete from pg_depend where
|
|
objid = (select oid from pg_rewrite
|
|
where ev_class = 'tt14v'::regclass and rulename = '_RETURN')
|
|
and refobjsubid = 3
|
|
returning pg_describe_object(classid, objid, objsubid) as obj,
|
|
pg_describe_object(refclassid, refobjid, refobjsubid) as ref,
|
|
deptype;
|
|
|
|
-- this will now succeed:
|
|
alter table tt14t drop column f3;
|
|
|
|
-- column f3 is still in the view, sort of ...
|
|
select pg_get_viewdef('tt14v', true);
|
|
-- ... and you can even EXPLAIN it ...
|
|
explain (verbose, costs off) select * from tt14v;
|
|
-- but it will fail at execution
|
|
select f1, f4 from tt14v;
|
|
select * from tt14v;
|
|
|
|
rollback;
|
|
|
|
-- likewise, altering a referenced column's type is prohibited ...
|
|
alter table tt14t alter column f4 type integer using f4::integer; -- fail
|
|
|
|
-- ... but some bug might let it happen, so check defenses
|
|
begin;
|
|
|
|
-- destroy the dependency entry that prevents the ALTER:
|
|
delete from pg_depend where
|
|
objid = (select oid from pg_rewrite
|
|
where ev_class = 'tt14v'::regclass and rulename = '_RETURN')
|
|
and refobjsubid = 4
|
|
returning pg_describe_object(classid, objid, objsubid) as obj,
|
|
pg_describe_object(refclassid, refobjid, refobjsubid) as ref,
|
|
deptype;
|
|
|
|
-- this will now succeed:
|
|
alter table tt14t alter column f4 type integer using f4::integer;
|
|
|
|
-- f4 is still in the view ...
|
|
select pg_get_viewdef('tt14v', true);
|
|
-- but will fail at execution
|
|
select f1, f3 from tt14v;
|
|
select * from tt14v;
|
|
|
|
rollback;
|
|
|
|
drop view tt14v;
|
|
|
|
create view tt14v as select t.f1, t.f4 from tt14f() t;
|
|
|
|
select pg_get_viewdef('tt14v', true);
|
|
select * from tt14v;
|
|
|
|
alter table tt14t drop column f3; -- ok
|
|
|
|
select pg_get_viewdef('tt14v', true);
|
|
explain (verbose, costs off) select * from tt14v;
|
|
select * from tt14v;
|
|
|
|
-- check display of whole-row variables in some corner cases
|
|
|
|
create type nestedcomposite as (x int8_tbl);
|
|
create view tt15v as select row(i)::nestedcomposite from int8_tbl i;
|
|
select * from tt15v;
|
|
select pg_get_viewdef('tt15v', true);
|
|
select row(i.*::int8_tbl)::nestedcomposite from int8_tbl i;
|
|
|
|
create view tt16v as select * from int8_tbl i, lateral(values(i)) ss;
|
|
select * from tt16v;
|
|
select pg_get_viewdef('tt16v', true);
|
|
select * from int8_tbl i, lateral(values(i.*::int8_tbl)) ss;
|
|
|
|
create view tt17v as select * from int8_tbl i where i in (values(i));
|
|
select * from tt17v;
|
|
select pg_get_viewdef('tt17v', true);
|
|
select * from int8_tbl i where i.* in (values(i.*::int8_tbl));
|
|
|
|
create table tt15v_log(o tt15v, n tt15v, incr bool);
|
|
create rule updlog as on update to tt15v do also
|
|
insert into tt15v_log values(old, new, row(old,old) < row(new,new));
|
|
\d+ tt15v
|
|
|
|
-- check unique-ification of overlength names
|
|
|
|
create view tt18v as
|
|
select * from int8_tbl xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxy
|
|
union all
|
|
select * from int8_tbl xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxz;
|
|
select pg_get_viewdef('tt18v', true);
|
|
explain (costs off) select * from tt18v;
|
|
|
|
-- check display of ScalarArrayOp with a sub-select
|
|
|
|
select 'foo'::text = any(array['abc','def','foo']::text[]);
|
|
select 'foo'::text = any((select array['abc','def','foo']::text[])); -- fail
|
|
select 'foo'::text = any((select array['abc','def','foo']::text[])::text[]);
|
|
|
|
create view tt19v as
|
|
select 'foo'::text = any(array['abc','def','foo']::text[]) c1,
|
|
'foo'::text = any((select array['abc','def','foo']::text[])::text[]) c2;
|
|
select pg_get_viewdef('tt19v', true);
|
|
|
|
-- check display of assorted RTE_FUNCTION expressions
|
|
|
|
create view tt20v as
|
|
select * from
|
|
coalesce(1,2) as c,
|
|
collation for ('x'::text) col,
|
|
current_date as d,
|
|
localtimestamp(3) as t,
|
|
cast(1+2 as int4) as i4,
|
|
cast(1+2 as int8) as i8;
|
|
select pg_get_viewdef('tt20v', true);
|
|
|
|
-- reverse-listing of various special function syntaxes required by SQL
|
|
|
|
create view tt201v as
|
|
select
|
|
('2022-12-01'::date + '1 day'::interval) at time zone 'UTC' as atz,
|
|
extract(day from now()) as extr,
|
|
(now(), '1 day'::interval) overlaps
|
|
(current_timestamp(2), '1 day'::interval) as o,
|
|
'foo' is normalized isn,
|
|
'foo' is nfkc normalized isnn,
|
|
normalize('foo') as n,
|
|
normalize('foo', nfkd) as nfkd,
|
|
overlay('foo' placing 'bar' from 2) as ovl,
|
|
overlay('foo' placing 'bar' from 2 for 3) as ovl2,
|
|
position('foo' in 'foobar') as p,
|
|
substring('foo' from 2 for 3) as s,
|
|
substring('foo' similar 'f' escape '#') as ss,
|
|
substring('foo' from 'oo') as ssf, -- historically-permitted abuse
|
|
trim(' ' from ' foo ') as bt,
|
|
trim(leading ' ' from ' foo ') as lt,
|
|
trim(trailing ' foo ') as rt,
|
|
trim(E'\\000'::bytea from E'\\000Tom\\000'::bytea) as btb,
|
|
trim(leading E'\\000'::bytea from E'\\000Tom\\000'::bytea) as ltb,
|
|
trim(trailing E'\\000'::bytea from E'\\000Tom\\000'::bytea) as rtb,
|
|
CURRENT_DATE as cd,
|
|
(select * from CURRENT_DATE) as cd2,
|
|
CURRENT_TIME as ct,
|
|
(select * from CURRENT_TIME) as ct2,
|
|
CURRENT_TIME (1) as ct3,
|
|
(select * from CURRENT_TIME (1)) as ct4,
|
|
CURRENT_TIMESTAMP as ct5,
|
|
(select * from CURRENT_TIMESTAMP) as ct6,
|
|
CURRENT_TIMESTAMP (1) as ct7,
|
|
(select * from CURRENT_TIMESTAMP (1)) as ct8,
|
|
LOCALTIME as lt1,
|
|
(select * from LOCALTIME) as lt2,
|
|
LOCALTIME (1) as lt3,
|
|
(select * from LOCALTIME (1)) as lt4,
|
|
LOCALTIMESTAMP as lt5,
|
|
(select * from LOCALTIMESTAMP) as lt6,
|
|
LOCALTIMESTAMP (1) as lt7,
|
|
(select * from LOCALTIMESTAMP (1)) as lt8,
|
|
CURRENT_CATALOG as ca,
|
|
(select * from CURRENT_CATALOG) as ca2,
|
|
CURRENT_ROLE as cr,
|
|
(select * from CURRENT_ROLE) as cr2,
|
|
CURRENT_SCHEMA as cs,
|
|
(select * from CURRENT_SCHEMA) as cs2,
|
|
CURRENT_USER as cu,
|
|
(select * from CURRENT_USER) as cu2,
|
|
USER as us,
|
|
(select * from USER) as us2,
|
|
SESSION_USER seu,
|
|
(select * from SESSION_USER) as seu2,
|
|
SYSTEM_USER as su,
|
|
(select * from SYSTEM_USER) as su2;
|
|
select pg_get_viewdef('tt201v', true);
|
|
|
|
-- corner cases with empty join conditions
|
|
|
|
create view tt21v as
|
|
select * from tt5 natural inner join tt6;
|
|
select pg_get_viewdef('tt21v', true);
|
|
|
|
create view tt22v as
|
|
select * from tt5 natural left join tt6;
|
|
select pg_get_viewdef('tt22v', true);
|
|
|
|
-- check handling of views with immediately-renamed columns
|
|
|
|
create view tt23v (col_a, col_b) as
|
|
select q1 as other_name1, q2 as other_name2 from int8_tbl
|
|
union
|
|
select 42, 43;
|
|
|
|
select pg_get_viewdef('tt23v', true);
|
|
select pg_get_ruledef(oid, true) from pg_rewrite
|
|
where ev_class = 'tt23v'::regclass and ev_type = '1';
|
|
|
|
-- test extraction of FieldSelect field names (get_name_for_var_field)
|
|
|
|
create view tt24v as
|
|
with cte as materialized (select r from (values(1,2),(3,4)) r)
|
|
select (r).column2 as col_a, (rr).column2 as col_b from
|
|
cte join (select rr from (values(1,7),(3,8)) rr limit 2) ss
|
|
on (r).column1 = (rr).column1;
|
|
select pg_get_viewdef('tt24v', true);
|
|
create view tt25v as
|
|
with cte as materialized (select pg_get_keywords() k)
|
|
select (k).word from cte;
|
|
select pg_get_viewdef('tt25v', true);
|
|
-- also check cases seen only in EXPLAIN
|
|
explain (verbose, costs off)
|
|
select * from tt24v;
|
|
explain (verbose, costs off)
|
|
select (r).column2 from (select r from (values(1,2),(3,4)) r limit 1) ss;
|
|
|
|
-- test pretty-print parenthesization rules, and SubLink deparsing
|
|
|
|
create view tt26v as
|
|
select x + y + z as c1,
|
|
(x * y) + z as c2,
|
|
x + (y * z) as c3,
|
|
(x + y) * z as c4,
|
|
x * (y + z) as c5,
|
|
x + (y + z) as c6,
|
|
x + (y # z) as c7,
|
|
(x > y) AND (y > z OR x > z) as c8,
|
|
(x > y) OR (y > z AND NOT (x > z)) as c9,
|
|
(x,y) <> ALL (values(1,2),(3,4)) as c10,
|
|
(x,y) <= ANY (values(1,2),(3,4)) as c11
|
|
from (values(1,2,3)) v(x,y,z);
|
|
select pg_get_viewdef('tt26v', true);
|
|
|
|
-- clean up all the random objects we made above
|
|
DROP SCHEMA temp_view_test CASCADE;
|
|
DROP SCHEMA testviewschm2 CASCADE;
|