insert into table_name with clause_name as (select query ) [, clause_name1 as (select query ) …] select column1,…columnn from clause_name; 例子: –create with 语句 CREATE TABLE w_test_20 AS WITH data_info_19 AS (
还可以用在insert语句中,如下: insertintot1Withc3As(Select*Fromv_tr_dailyWherep_date=to_date('2019-05-21','yyyy-mm-dd')) ,c1As(Selecttype_id,dept_id,drill_dept,sum(mine_ore0)Fromc3Wheretype_id=1GroupBytype_id,dept_id,drill_dept )Select*Fromc1 15161718192021...
向一张表插入数据的 with as 用法: 复制复制复制 复制 insertintotable1withs1as(selectrownum c1fromdual connectbyrownum<=10),s2as(selectrownum c2fromdual connectbyrownum<=10)selecta.c1,b.c2froms1 a,s2 bwhere...; 说明:with as 相当于虚拟视图。 特别对于union all比较有用。 ...
其实就是把一大堆重复用到的sql语句放在with as里面,取一个别名,后面的查询就可以用它,这样对于大批量的sql语句起到一个优化的作用,而且清楚明了。 向一张表插入数据的with as用法 insertintotable2withs1as(selectrownum c1fromdual connectbyrownum<=10), s2as(selectrownum c2fromdual connectbyrownum<=10)s...
oracle支持使用with as 子句来创建表 语法: create table table_name as with clause_name as (select query ) [, clause_name1 as (select query ) ...] select column1,...columnn from clause_name; 语法: insert into table_name with clause_name as ...
insertintotable2 with s1 as(selectrownumc1 fromdual connectbyrownum<= 10), s2 as(selectrownumc2 fromdual connectbyrownum<= 10) selecta.c1, b.c2 froms1 a, s2 b where...; select s1.sid, s2.sid from s1 ,s2需要有关联条件,不然结果会是笛卡尔积。 with as相当于虚拟视图。 with as短语,也...
⽤with的⽤法：insert into HW_RATE (ID,SUB_TYPE,DISTRICT_CODE,REGION_CODE,SUB_AREA_CODE,CREATE_DATE,CREATE_USER)with areaInfo as (select o.district_code bu, o.region_code re from eis_user.org_office o where o.sub_area_code ='60487'and o.status =1 and o.year= extract(year from...
其实就是把一大堆重复用到的sql语句放在with as里面,取一个别名,后面的查询就可以用它,这样对于大批量的sql语句起到一个优化的作用,而且清楚明了。 向一张表插入数据的with as用法 1 2 3 4 5 insertintotable2 with s1as(selectrownum c1fromdualconnectbyrownum <= 10), ...
(ORACLEWITHAS用法大全 ORACLE WITH AS 用法 有两张表,分别为A、B,求得一个字段的值先在表A中寻找,如果A表中存在数据,则输出A表的值;如果A表中不存在,则在B表中寻找,若B表中有相应记录,则输出B表的值;如果B表中也不存在,则输出no records”字符串。 view plaincopy to clipboardprint? with?? sql1?
最近迷上一种批量插入的方法,一句sql解决,将需要插入的数据用with as 的方式查出来,不管多么复杂的sql,都可以用临时表的方式查出来,然后直接插入,这样代码更加清晰 流程也简单 insert into 表1 with t1 as (select * from 表2), t2 as (sele