需要实现: 1 2 3 4 5 if not exists(select * from ErrorConfig where Type=RetryWaitSeconds) begin insert into ErrorConfig(Type,Value1) values(RetryWaitSeconds,3) end 只能用:
Mybatisd对sql表的一对多查询 1 2 3 4 5 6 7 8 9 select * from projectrecord pr left join projects po on po.pid=pr.pid left join emp e on e.empno = pr.empno where pr.pid=1 1 2