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32 lines
679 B
SQL
32 lines
679 B
SQL
USE `cosinee`;
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-- -----------------
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-- prepare variables
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-- -----------------
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SET @dbname = DATABASE ( );
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SET @tablename = "uk_consult_invite";
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SET @columnname = "whitelist_mode";
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SET @preparedStatement = (
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SELECT
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IF
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(
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(
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SELECT
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COUNT( * )
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FROM
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INFORMATION_SCHEMA.COLUMNS
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WHERE
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( table_name = @tablename )
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AND ( table_schema = @dbname )
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AND ( column_name = @columnname )
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) > 0,
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"SELECT 1",
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CONCAT( "ALTER TABLE ", @tablename, " ADD ", @columnname, " TINYINT ( 4 ) DEFAULT '0' COMMENT '启用白名单';" )
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)
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);
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PREPARE alterIfNotExists
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FROM
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@preparedStatement;
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EXECUTE alterIfNotExists;
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DEALLOCATE PREPARE alterIfNotExists; |