liuminghui
17 lines
589 B
SQL
17 lines
589 B
SQL
-- 附加费的价格和货币分开。金额仍在 amount，货币和计费单位在 price_unit，如 EUR/ITEM。可重复执行。
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SET NAMES utf8mb4;
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SET @ddl = (
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SELECT IF(
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EXISTS (
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SELECT 1 FROM information_schema.COLUMNS
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WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'pay_surcharge' AND COLUMN_NAME = 'price_unit'
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),
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'SELECT 1',
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'ALTER TABLE pay_surcharge ADD COLUMN price_unit varchar(40) DEFAULT NULL COMMENT ''货币和计费单位，如EUR/ITEM、RMB/KG、%'' AFTER currency'
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)
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);
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PREPARE stmt FROM @ddl;
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EXECUTE stmt;
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DEALLOCATE PREPARE stmt;
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