18 lines
544 B
SQL
18 lines
544 B
SQL
SET @dbname = DATABASE();
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SET @tablename = 'redemption_code';
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SET @colname = 'status';
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SET @sql = (
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SELECT IF(
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COUNT(*) = 0,
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'ALTER TABLE `redemption_code` ADD COLUMN `status` TINYINT NOT NULL DEFAULT 1 COMMENT ''Status: 1=enabled, 0=disabled'' AFTER `quantity`;',
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'SELECT "Column `status` already exists";'
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)
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FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = @dbname
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AND TABLE_NAME = @tablename
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AND COLUMN_NAME = @colname
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);
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PREPARE stmt FROM @sql;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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