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@@ -393,7 +393,7 @@ ALTER TABLE `t_bill`
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ADD COLUMN IF NOT EXISTS `bill_use_template` text CHARACTER SET utf8 COLLATE utf8_general_ci NULL AFTER `bill_set_explain`;
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ALTER TABLE `t_bill_order`
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-ADD COLUMN `order_first_time` datetime NULL AFTER `bill_pnames`,
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-ADD COLUMN `order_last_time` datetime NULL AFTER `order_first_time`;
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+ADD COLUMN IF NOT EXISTS `order_first_time` datetime NULL AFTER `bill_pnames`,
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+ADD COLUMN IF NOT EXISTS `order_last_time` datetime NULL AFTER `order_first_time`;
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SET FOREIGN_KEY_CHECKS=1;
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