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# # Bug#40277 SHOW CREATE VIEW returns invalid SQL # Bug#41999 SHOW CREATE VIEW returns invalid SQL if subquery is used in SELECT list # # 65 characters exceed the maximum length of a column identifier. The system cannot derive the name from statement. # Constant with length = 65 . Expect to get the identifier 'Name_exp_1'. CREATE VIEW v1 AS SELECT '<--- 65 char including the arrows --->'; SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'; COLUMN_NAME Name_exp_1 DROP VIEW v1; CREATE VIEW v1 AS select '<--- 65 char including the arrows --->' AS `Name_exp_1`; DROP VIEW v1; CREATE VIEW v1 AS select '<--- 65 char including the arrows --->' AS `Name_exp_1`; DROP VIEW v1; # Subquery with length = 65 . Expect to get the identifier 'Name_exp_1'. # Attention: Identifier for the column within the subquery will be not generated. CREATE VIEW v1 AS SELECT (SELECT '<--- 54 char including the arrows (+ 11 outside) -->'); SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'; COLUMN_NAME Name_exp_1 DROP VIEW v1; CREATE VIEW v1 AS select (select '<--- 54 char including the arrows (+ 11 outside) -->') AS `Name_exp_1`; DROP VIEW v1; CREATE VIEW v1 AS select (select '<--- 54 char including the arrows (+ 11 outside) -->') AS `Name_exp_1`; DROP VIEW v1; # ----------------------------------------------------------------------------------------------------------------- # 64 characters are the maximum length of a column identifier. The system can derive the name from the statement. CREATE VIEW v1 AS SELECT '<--- 64 char including the arrows --->'; SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'; COLUMN_NAME <--- 64 char including the arrows ---> DROP VIEW v1; CREATE VIEW v1 AS select '<--- 64 char including the arrows --->' AS `<--- 64 char including the arrows --->`; DROP VIEW v1; CREATE VIEW v1 AS select '<--- 64 char including the arrows --->' AS `<--- 64 char including the arrows --->`; DROP VIEW v1; CREATE VIEW v1 AS SELECT (SELECT '<--- 53 char including the arrows (+ 11 outside) --->'); SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'; COLUMN_NAME (SELECT '<--- 53 char including the arrows (+ 11 outside) --->') DROP VIEW v1; CREATE VIEW v1 AS select (select '<--- 53 char including the arrows (+ 11 outside) --->') AS `(SELECT '<--- 53 char including the arrows (+ 11 outside) --->')`; DROP VIEW v1; CREATE VIEW v1 AS select (select '<--- 53 char including the arrows (+ 11 outside) --->') AS `(SELECT '<--- 53 char including the arrows (+ 11 outside) --->')`; DROP VIEW v1; # ----------------------------------------------------------------------------------------------------------------- # Identifiers must not have trailing spaces. The system cannot derive the name from a constant with trailing space. # Generated identifiers have at their end the position within the select column list. # 'c2 ' -> 'Name_exp_1' , ' c4 ' -> 'Name_exp_2' CREATE VIEW v1 AS SELECT 'c1', 'c2 ', ' c3', ' c4 '; SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'; COLUMN_NAME c1 Name_exp_2 c3 Name_exp_4 DROP VIEW v1; CREATE VIEW v1 AS select 'c1' AS `c1`,'c2 ' AS `Name_exp_2`,' c3' AS `c3`,' c4 ' AS `Name_exp_4`; DROP VIEW v1; CREATE VIEW v1 AS select 'c1' AS `c1`,'c2 ' AS `Name_exp_2`,' c3' AS `c3`,' c4 ' AS `Name_exp_4`; DROP VIEW v1; # # Bug#40277 SHOW CREATE VIEW returns invalid SQL # DROP VIEW IF EXISTS v1; DROP TABLE IF EXISTS t1,t2; # Column name exceeds the maximum length. CREATE VIEW v1 AS SELECT '0000000000 1111111111 2222222222 3333333333 4444444444 5555555555'; DROP VIEW v1; CREATE VIEW v1 AS select '0000000000 1111111111 2222222222 3333333333 4444444444 5555555555' AS `Name_exp_1`; DROP VIEW v1; # Column names with leading trailing spaces. CREATE VIEW v1 AS SELECT 'c1', 'c2 ', ' c3', ' c4 '; DROP VIEW v1; CREATE VIEW v1 AS select 'c1' AS `c1`,'c2 ' AS `Name_exp_2`,' c3' AS `c3`,' c4 ' AS `Name_exp_4`; DROP VIEW v1; # Column name conflicts with a auto-generated one. CREATE VIEW v1 AS SELECT 'c1', 'c2 ', ' c3', ' c4 ', 'Name_exp_2'; DROP VIEW v1; CREATE VIEW v1 AS select 'c1' AS `c1`,'c2 ' AS `Name_exp_2`,' c3' AS `c3`,' c4 ' AS `Name_exp_4`,'Name_exp_2' AS `My_exp_Name_exp_2`; DROP VIEW v1; # Invalid conlumn name in subquery. CREATE VIEW v1 AS SELECT (SELECT ' c1 '); DROP VIEW v1; CREATE VIEW v1 AS select (select ' c1 ') AS `(SELECT ' c1 ')`; DROP VIEW v1; CREATE TABLE t1(a INT); CREATE TABLE t2 LIKE t1; # Test alias in subquery CREATE VIEW v1 AS SELECT a FROM t1 WHERE EXISTS (SELECT 1 FROM t2 AS b WHERE b.a = 0); DROP VIEW v1; CREATE VIEW v1 AS select `test`.`t1`.`a` AS `a` from `test`.`t1` where exists(select 1 from `test`.`t2` `b` where (`b`.`a` = 0)); DROP VIEW v1; # Test column alias in subquery CREATE VIEW v1 AS SELECT a FROM t1 WHERE EXISTS (SELECT a AS alias FROM t1 GROUP BY alias); SHOW CREATE VIEW v1; View Create View character_set_client collation_connection v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`a` AS `a` from `t1` where exists(select `t1`.`a` AS `alias` from `t1` group by `alias`) latin1 latin1_swedish_ci DROP VIEW v1; CREATE VIEW v1 AS select `test`.`t1`.`a` AS `a` from `test`.`t1` where exists(select `test`.`t1`.`a` AS `alias` from `test`.`t1` group by `alias`); DROP VIEW v1; # Alias as the expression column name. CREATE VIEW v1 AS SELECT a FROM t1 WHERE EXISTS (SELECT ' a ' AS alias FROM t1 GROUP BY alias); SHOW CREATE VIEW v1; View Create View character_set_client collation_connection v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS select `t1`.`a` AS `a` from `t1` where exists(select ' a ' AS `alias` from `t1` group by `alias`) latin1 latin1_swedish_ci DROP VIEW v1; CREATE VIEW v1 AS select `test`.`t1`.`a` AS `a` from `test`.`t1` where exists(select ' a ' AS `alias` from `test`.`t1` group by `alias`); DROP VIEW v1; DROP TABLE t1, t2;