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view_alias.test
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--echo # --echo # Bug#40277 SHOW CREATE VIEW returns invalid SQL --echo # Bug#41999 SHOW CREATE VIEW returns invalid SQL if subquery is used in SELECT list --echo # --echo # 65 characters exceed the maximum length of a column identifier. The system cannot derive the name from statement. --echo # Constant with length = 65 . Expect to get the identifier 'Name_exp_1'. let $after_select= '<--- 65 char including the arrows --->'; --source include/view_alias.inc --echo # Subquery with length = 65 . Expect to get the identifier 'Name_exp_1'. --echo # Attention: Identifier for the column within the subquery will be not generated. let $after_select= (SELECT '<--- 54 char including the arrows (+ 11 outside) -->'); --source include/view_alias.inc --echo # ----------------------------------------------------------------------------------------------------------------- # --echo # 64 characters are the maximum length of a column identifier. The system can derive the name from the statement. let $after_select= '<--- 64 char including the arrows --->'; --source include/view_alias.inc let $after_select= (SELECT '<--- 53 char including the arrows (+ 11 outside) --->'); --source include/view_alias.inc --echo # ----------------------------------------------------------------------------------------------------------------- # --echo # Identifiers must not have trailing spaces. The system cannot derive the name from a constant with trailing space. --echo # Generated identifiers have at their end the position within the select column list. --echo # 'c2 ' -> 'Name_exp_1' , ' c4 ' -> 'Name_exp_2' let $after_select= 'c1', 'c2 ', ' c3', ' c4 '; --source include/view_alias.inc --echo # --echo # Bug#40277 SHOW CREATE VIEW returns invalid SQL --echo # --disable_warnings DROP VIEW IF EXISTS v1; DROP TABLE IF EXISTS t1,t2; --enable_warnings --echo # Column name exceeds the maximum length. CREATE VIEW v1 AS SELECT '0000000000 1111111111 2222222222 3333333333 4444444444 5555555555'; let $query = `SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'`; DROP VIEW v1; eval CREATE VIEW v1 AS $query; DROP VIEW v1; --echo # Column names with leading trailing spaces. CREATE VIEW v1 AS SELECT 'c1', 'c2 ', ' c3', ' c4 '; let $query = `SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'`; DROP VIEW v1; eval CREATE VIEW v1 AS $query; DROP VIEW v1; --echo # Column name conflicts with a auto-generated one. CREATE VIEW v1 AS SELECT 'c1', 'c2 ', ' c3', ' c4 ', 'Name_exp_2'; let $query = `SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'`; DROP VIEW v1; eval CREATE VIEW v1 AS $query; DROP VIEW v1; --echo # Invalid conlumn name in subquery. CREATE VIEW v1 AS SELECT (SELECT ' c1 '); let $query = `SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'`; DROP VIEW v1; eval CREATE VIEW v1 AS $query; DROP VIEW v1; CREATE TABLE t1(a INT); CREATE TABLE t2 LIKE t1; --echo # Test alias in subquery CREATE VIEW v1 AS SELECT a FROM t1 WHERE EXISTS (SELECT 1 FROM t2 AS b WHERE b.a = 0); let $query = `SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'`; DROP VIEW v1; eval CREATE VIEW v1 AS $query; DROP VIEW v1; --echo # 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; let $query = `SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'`; DROP VIEW v1; eval CREATE VIEW v1 AS $query; DROP VIEW v1; --echo # 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; let $query = `SELECT VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = 'test' AND TABLE_NAME = 'v1'`; DROP VIEW v1; eval CREATE VIEW v1 AS $query; DROP VIEW v1; DROP TABLE t1, t2;