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28 lines
584 B
28 lines
584 B
1 month ago
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USE `data_center_new`;
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DROP procedure IF EXISTS `add_column`;
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DELIMITER $$
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CREATE PROCEDURE add_column()
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BEGIN
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IF NOT EXISTS (
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SELECT *
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FROM information_schema.columns
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WHERE table_schema = 'data_center_new'
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AND table_name = 'device_alert_template'
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AND column_name = 'effective_period'
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) THEN
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ALTER TABLE device_alert_template
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ADD COLUMN `effective_period` varchar(200) DEFAULT NULL COMMENT '告警有效时间段';
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END IF;
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END$$
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DELIMITER ;
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CALL add_column();
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DROP procedure IF EXISTS `add_column`;
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