48 lines
1.5 KiB
MySQL
48 lines
1.5 KiB
MySQL
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SET @s = (SELECT IF(
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(SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE table_schema = DATABASE()
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AND table_name = 'Monitors'
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AND column_name = 'ManufacturerId'
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) > 0,
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"SELECT 'Column ManufacturerId already exists in Monitors'",
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"ALTER TABLE `Monitors` ADD `ManufacturerId` int(10) unsigned AFTER `StorageId`"
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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(*) FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE table_schema = DATABASE()
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AND table_name = 'Monitors'
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AND column_name = 'ManufacturerId'
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) > 0,
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"SELECT 'FOREIGN KEY for ManufacturerId already exists in Monitors'",
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"ALTER TABLE `Monitors` ADD FOREIGN KEY (`ManufacturerId`) REFERENCES `Manufacturers` (Id)"
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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(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE table_schema = DATABASE()
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AND table_name = 'Monitors'
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AND column_name = 'ModelId'
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) > 0,
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"SELECT 'Column ModelId already exists in Monitors'",
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"ALTER TABLE `Monitors` ADD `ModelId` int(10) unsigned AFTER `ManufacturerId`"
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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(*) FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE table_schema = DATABASE()
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AND table_name = 'Monitors'
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AND column_name = 'ModelId'
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) > 0,
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"SELECT 'FOREIGN KEY for ModelId already exists in Monitors'",
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"ALTER TABLE `Monitors` ADD FOREIGN KEY (`ModelId`) REFERENCES `Models` (Id)"
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));
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PREPARE stmt FROM @s;
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EXECUTE stmt;
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