sql关联表查询结果并插入 - 合翅

sql关联表查询结果并插入

2015-01-12 11:44  合翅  阅读(1606)  评论(0)  编辑  收藏  举报

这里涉及三个表，AA,BB,CC,将AA的数据更新到CC表中，将AA中LABEL_ID分别截取字段与BB表中的label_id对应查询到LABEL_NAME作为CC表的一个字段插入，这里分成四段查询

insert into CC

select T.apmac,T1.LABEL_NAME,T2.LABEL_NAME,T3.LABEL_NAME,T4.LABEL_NAME,T.LABEL_ID,\'杭州\'

from(select a.AP_MAC as apmac,a.LABEL_ID ,substr(a.label_id,3,2)as level1,substr(a.label_id,5,2)as level2,

substr(a.label_id,7,3)as level3,substr(a.label_id,10,3)as level4 from AA a) T,

(select * from BB where label_level=\'一级\')T1,

(select * from BB where label_level=\'二级\')T2,

(select * from BB where label_level=\'三级\')T3,

(select * from BB where label_level=\'四级\')T4

WHERE T1.LABEL_ID=T.level1 and T2.LABEL_ID=T.level2 and T3.LABEL_ID=T.level3 and T4.LABEL_ID=T.level4

• 分类 oracle
•