36 lines
1.0 KiB
SQL
36 lines
1.0 KiB
SQL
-- 添加 algo 列（如果不存在）
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SET @dbname = DATABASE();
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SET @tablename = 'user';
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SET @colname = 'algo';
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SET @sql = (
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SELECT IF(
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COUNT(*) = 0,
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'ALTER TABLE `user` ADD COLUMN `algo` VARCHAR(20) NOT NULL DEFAULT ''default'' COMMENT ''Encryption Algorithm'' AFTER `password`;',
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'SELECT "Column `algo` 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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-- 添加 salt 列（如果不存在）
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SET @colname = 'salt';
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SET @sql = (
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SELECT IF(
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COUNT(*) = 0,
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'ALTER TABLE `user` ADD COLUMN `salt` VARCHAR(20) NOT NULL DEFAULT ''default'' COMMENT ''Password Salt'' AFTER `algo`;',
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'SELECT "Column `salt` 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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