[pre] -- ---------------------------- -- 判断 vrv_paw_rule 表是否存在 thresholdMin 字段,不存在则添加; 存在则修改字段类型 DELIMITER ?? DROP PROCEDURE IF EXISTS schema_change?? CREATE PROCEDURE schema_change() BEGIN IF NOT EXISTS (SELECT * FROM information_schema.columns WHERE table_schema = DATABASE() AND table_name = 'vrv_paw_rule' AND column_name = 'thresholdMin') THEN ALTER TABLE vrv_paw_rule ADD COLUMN thresholdMin BIGINT; ELSE ALTER TABLE vrv_paw_rule MODIFY COLUMN thresholdMin BIGINT ; END IF; END?? DELIMITER ; CALL schema_change(); [/pre]