285 lines
9.5 KiB
Plaintext
285 lines
9.5 KiB
Plaintext
--
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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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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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ERROR: relation "noview" does not exist
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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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--
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-- CREATE OR REPLACE VIEW
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--
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CREATE TABLE viewtest_tbl (a int, b int);
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COPY viewtest_tbl FROM stdin;
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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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a | b
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----+----
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15 | 20
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20 | 25
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(2 rows)
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a, b FROM viewtest_tbl WHERE a > 5 ORDER BY b DESC;
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SELECT * FROM viewtest;
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a | b
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----+----
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20 | 25
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15 | 20
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10 | 15
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(3 rows)
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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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ERROR: cannot drop columns from view
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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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ERROR: cannot change name of view column "a" to "?column?"
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-- should fail
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a, b::numeric FROM viewtest_tbl;
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ERROR: cannot change data type of view column "b" from integer to numeric
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-- should work
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CREATE OR REPLACE VIEW viewtest AS
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SELECT a, b, 0 AS c 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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NOTICE: view "v1_temp" will be a temporary view
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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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NOTICE: view "v3_temp" will be a temporary view
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ERROR: temporary tables cannot specify a schema name
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-- should fail
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CREATE SCHEMA test_schema
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CREATE TEMP VIEW testview AS SELECT 1;
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ERROR: temporary tables cannot specify a schema name
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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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NOTICE: view "v4_temp" will be a temporary view
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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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NOTICE: view "v5_temp" will be a temporary view
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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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NOTICE: view "v6_temp" will be a temporary view
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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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NOTICE: view "v7_temp" will be a temporary view
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CREATE VIEW v8_temp AS SELECT * FROM base_table WHERE EXISTS (SELECT 1 FROM temp_table);
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NOTICE: view "v8_temp" will be a temporary view
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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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NOTICE: view "v9_temp" will be a temporary view
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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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NOTICE: view "v10_temp" will be a temporary view
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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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NOTICE: view "v11_temp" will be a temporary view
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CREATE VIEW v12_temp AS SELECT true FROM v11_temp;
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NOTICE: view "v12_temp" will be a temporary view
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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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NOTICE: view "v13_temp" will be a temporary view
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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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relname
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---------
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v1
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v2
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v3
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v4
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v5
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v6
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v7
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v8
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v9
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(9 rows)
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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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relname
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----------
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v10_temp
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v11_temp
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v12_temp
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v13_temp
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v1_temp
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v2_temp
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v4_temp
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v5_temp
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v6_temp
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v7_temp
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v8_temp
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v9_temp
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(12 rows)
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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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NOTICE: view "temporal1" will be a temporary view
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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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NOTICE: view "temporal2" will be a temporary view
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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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NOTICE: view "temporal3" will be a temporary view
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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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NOTICE: view "temporal4" will be a temporary view
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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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relname
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----------
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nontemp1
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nontemp2
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nontemp3
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nontemp4
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(4 rows)
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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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relname
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-----------
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temporal1
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temporal2
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temporal3
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temporal4
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(4 rows)
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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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count
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-------
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1
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(1 row)
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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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NOTICE: view "mytempview" will be a temporary view
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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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count
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-------
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1
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(1 row)
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DROP SCHEMA temp_view_test CASCADE;
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NOTICE: drop cascades to 22 other objects
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DETAIL: drop cascades to table temp_view_test.base_table
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drop cascades to view v7_temp
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drop cascades to view v10_temp
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drop cascades to view v11_temp
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drop cascades to view v12_temp
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drop cascades to view v2_temp
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drop cascades to view v4_temp
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drop cascades to view v6_temp
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drop cascades to view v8_temp
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drop cascades to view v9_temp
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drop cascades to table temp_view_test.base_table2
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drop cascades to view v5_temp
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drop cascades to view temp_view_test.v1
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drop cascades to view temp_view_test.v2
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drop cascades to view temp_view_test.v3
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drop cascades to view temp_view_test.v4
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drop cascades to view temp_view_test.v5
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drop cascades to view temp_view_test.v6
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drop cascades to view temp_view_test.v7
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drop cascades to view temp_view_test.v8
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drop cascades to sequence temp_view_test.seq1
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drop cascades to view temp_view_test.v9
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DROP SCHEMA testviewschm2 CASCADE;
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NOTICE: drop cascades to 16 other objects
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DETAIL: drop cascades to table t1
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drop cascades to view temporal1
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drop cascades to view temporal2
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drop cascades to view temporal3
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drop cascades to view temporal4
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drop cascades to table t2
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drop cascades to view nontemp1
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drop cascades to view nontemp2
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drop cascades to view nontemp3
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drop cascades to view nontemp4
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drop cascades to table tbl1
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drop cascades to table tbl2
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drop cascades to table tbl3
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drop cascades to table tbl4
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drop cascades to view mytempview
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drop cascades to view pubview
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SET search_path to public;
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