摘要：// 达梦触发器 CREATE OR REPLACE TRIGGER "K_BASIC"."B_BASE_ENGINEERING_CATEGORY TO B_PROJECT_INVESTMENT" AFTER UPDATE OR INSERT ON "K_BASIC"."B_BASE_ENGINEE 阅读全文

摘要：# 达梦数据库实现一条sql判断数据是否存在，如存在则修改，不存在，则新增 MERGE INTO X.TABLE1 T1 USING ( SELECT 3 as id, '名字' as COLUMN_1, 0 as COLUMN_2 FROM DUAL ) T2 ON(T1.id = T2.id) 阅读全文