WHEN NOT MATCHED子句:指定当源表中的数据与目标表中的数据不匹配时应该执行的操作。通常是INSERT操作。例如: WHENNOTMATCHEDTHENINSERT(column1, column2)VALUES(source_table.column1, source_table.column2) 复制代码 通过合理设置匹配条件,可以确保MERGE INTO语句能够正确地将源表中的数据合并到目标表中,避免数据重复或遗漏的情况发生。在设置匹配条件时,需要注意确保源表和目标...
WHEN NOT MATCHED THEN:当匹配条件不满足时,执行插入操作。 merge into语句的详细解析 INTO子句:指定目标表,即要更新或插入数据的表。 USING子句:指定源表或子查询,用于提供更新或插入数据的来源。 ON子句:指定匹配条件,用于判断目标表和源表(或子查询结果集)中的记录是否匹配。 WHEN MATCHED THEN子句:当匹配条件...
1.如果存在更新,不存在插入 MERGE INTO merge_target target USING (SELECT B.name,B.age,B.target_id FROM merge_source B) source ON (target.id=source.target_id) WHEN MATCHED THEN UPDATE SET target.name= source.name, target.age =source.age WHEN NOT MATCHED THEN INSERT(target.name,target.age...
insertinto B_MERGEvalues(2,4,'yihe',33,'黑龙江'); insertinto B_MERGEvalues(3,3,'fuguo','','山东'); commit; 4:MERGE INTO A_MERGE A USING (select B.AID,B.NAME,B.YEAR from B_MERGE B) C ON (A.id=C.AID) WHEN MATCHED THEN UPDATE SET A.YEAR=C.YEAR WHEN NOT MATCHED THEN IN...
MERGE INTO TEST_111111 T1 USING TEST_222222 T2 ON (T1.NAME = T2.NAME ) WHEN MATCHED THEN UPDATE SET T1.ID = 521 WHEN NOT MATCHED THEN INSERT VALUES (T2.ID,T2.NAME); 这时候就会报ORA-30926:无法再源表中获得一组稳定的行 原因:T1 表为源表,意思是 在 ON(CONDITION) 这里在做CONDITION...
merge into命令的语法结构如下：merge into A using B on (A.id = B.id)when matched thenupdate set A.col=B.colwhen not matched then insert 语句;语法解析：利用B表通过A.id=B.id的条件来匹配A表，当满足条件时，可以对A表进行更新，当不满足条件时，可以利用inert语句插入相关数据。例子：利用merge...
when not matched theninsert into t1 这里不能用INTO T1语法都错误，直接INSERT VALUES()括号里填相应的字段，如果没有给空值把你的这段when not matched theninsert into t1(iServiceTimeID,iWorkgroupID,dtDayStartTime,dtDayEndTime,dtWeekendStartTime,dtWeekendEndTime)values(CTIL_SERVICETIME_SEQ...
Oracle merge into 不执行not matched MERGEINTOscott.jobsUSING(select*fromdual)ON(job_id=13)whenMATCHEDthenupdatesetjob_desc='10001001'whenNOTMATCHEDtheninsert(job_id,job_desc,min_lvl,max_lvl)values(13,'13857... MERGE INTO scott.jobs USING (select * from dual) ON (job_id =13) when ...
【最佳实践】Merge Into 批量新增并修改删除数据 --2020.03.26:oracle没有NOT MATCHED BY SOURCE 语法,但是可以在match的条件里删除, MERGE INTO AIMS_ACCOUNT_ATTR T USING (SELECT AA.ACCOUNTID ACCOUNTID, GCD42.V_45 ACCOUNTNO, 1 IS_LAW_PERMEATION...
MERGE INTO T T1 USING (SELECT count(1) cnt FROM t where t.a='1001') T2 ON ( T2.cnt>0) WHEN MATCHED THEN UPDATE SET T1.b = T2.b WHEN NOT MATCHED THEN INSERT (a,b) VALUES('1001',2); 1. 2. 3. 4. 5. 6. 两张表操作有很多可选项,如下: ...