77 lines
2.1 KiB
MySQL
77 lines
2.1 KiB
MySQL
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--
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-- Drop Foreign Keys on Events table.
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--
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SELECT 'Checking for FOREIGN KEYS on Events Table';
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SET @s = (SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
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WHERE TABLE_NAME = 'Frames'
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AND REFERENCED_TABLE_SCHEMA = DATABASE()
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AND REFERENCED_TABLE_NAME = 'Events'
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AND CONSTRAINT_NAME = 'Frames_ibfk_1'
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) > 0,
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"ALTER TABLE Frames DROP FOREIGN KEY Frames_ibfk_1",
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"SELECT 'FOREIGN KEY In Frames table already removed or has a different name.'"
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));
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PREPARE stmt FROM @s;
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EXECUTE stmt;
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SET @s = (SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
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WHERE TABLE_NAME = 'Stats'
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AND REFERENCED_tABLE_SCHEMA = DATABASE()
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AND REFERENCED_TABLE_NAME = 'Events'
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AND CONSTRAINT_NAME = 'Stats_ibfk_1'
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) > 0,
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"ALTER TABLE Stats DROP FOREIGN KEY Stats_ibfk_1",
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"SELECT 'FOREIGN KEY In Stats table already removed or has a different name.'"
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));
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PREPARE stmt FROM @s;
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EXECUTE stmt;
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SET @s = (SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
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WHERE TABLE_NAME = 'Stats'
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AND REFERENCED_tABLE_SCHEMA = DATABASE()
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AND REFERENCED_TABLE_NAME = 'Events'
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AND CONSTRAINT_NAME = 'Stats_ibfk_2'
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) > 0,
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"ALTER TABLE Stats DROP FOREIGN KEY Stats_ibfk_2",
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"SELECT 'FOREIGN KEY In Stats table already removed or has a different name.'"
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));
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PREPARE stmt FROM @s;
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EXECUTE stmt;
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SET @s = (SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
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WHERE TABLE_NAME = 'Stats'
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AND REFERENCED_tABLE_SCHEMA = DATABASE()
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AND REFERENCED_TABLE_NAME = 'Events'
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AND CONSTRAINT_NAME = 'Stats_ibfk_3'
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) > 0,
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"ALTER TABLE Stats DROP FOREIGN KEY Stats_ibfk_3",
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"SELECT 'FOREIGN KEY In Stats table already removed or has a different name.'"
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));
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PREPARE stmt FROM @s;
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EXECUTE stmt;
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SET @s = (SELECT IF(
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(SELECT COUNT(*)
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FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
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WHERE TABLE_NAME = 'Stats'
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AND REFERENCED_tABLE_SCHEMA = DATABASE()
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AND REFERENCED_TABLE_NAME = 'Events'
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AND CONSTRAINT_NAME = 'Stats_ibfk_4'
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) > 0,
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"ALTER TABLE Stats DROP FOREIGN KEY Stats_ibfk_4",
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"SELECT 'FOREIGN KEY In Stats table already removed or has a different name.'"
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));
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