我有两个表client和well_names
表客户端
id,name
1 ABC
2 TEST
3 XYZ
表井名称
id,operator
1 ABC
2 ABC
3 ABC
4 TEST
5 TEST
6 XYZ
7 XYZ
我想从客户表中选择ID,并在well_names表中的运算符列上进行更新。
预期产量
表井名
id,operator
1 1
2 1
3 1
4 2
5 2
6 3
7 3
答案 0 :(得分:1)
此查询将起作用:
SELECT a.id, b.id
FROM clients as a LEFT JOIN well_names as b ON a.name = b.operator
答案 1 :(得分:0)
select w.id as id,
c.id as operator
from join tbl_well w
inner tbl_client c
on c.operator = w.operator
答案 2 :(得分:0)
您可以将subquery
与update语句一起使用:
update well_names w
set operator = (select c.id from Clients c where c.name = w.operator);
答案 3 :(得分:0)
UPDATE well_names WN
INNER JOIN Clients C ON WN.operator = C.operator
set WN.operator = C.id