14 lines
440 B
SQL
14 lines
440 B
SQL
SET @db = DATABASE();
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SET @sql = IF(
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EXISTS(
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SELECT 1 FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = @db AND TABLE_NAME = 'gxmu_wxxzx_project' AND COLUMN_NAME = 'promise_signature'
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),
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'SELECT 1',
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'ALTER TABLE gxmu_wxxzx_project ADD COLUMN promise_signature LONGTEXT NULL COMMENT ''承诺书签名图片(base64)'' AFTER promise_signer'
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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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