caojia
17 lines
563 B
SQL
17 lines
563 B
SQL
-- 重量段增加体积上限。长x宽x高记在这一档上，不记成费用。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_weight_band' AND COLUMN_NAME = 'volume_text'
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),
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'SELECT 1',
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'ALTER TABLE pay_weight_band ADD COLUMN volume_text varchar(40) DEFAULT NULL COMMENT ''体积上限，数字加单位，如10000cm³'' AFTER weight_max'
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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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