oracle判断查询结果是否为空
create table test1023(id int); --创建测试表 test1023 declare cnt int; begin select count(*) into cnt from test1023; if cnt=0 then insert into test1023 values('1'); commit; --触发器中 需要将这句删除; end if; end;
参:http://zhidao.baidu.com/link?url=WruRf6fvsDrqjIuESnzcwi0CVDT5b3lT8s1rncvbTCdvoOiKY9CcFa1BPoJw_IEyRi4kJWfhXJ9v4XoUAi4tl4fw7_M1dsVLakV2rcQKLna