MySQL查询返回未在另一个表中列出的行

Question

我在MySQL DB PHPMyAdmin中有两个表：

Table-1: T1

Table-2: T2

我需要编写一个mysql查询，它将返回T1中未列在T2中的所有IMEI。

例如，在这种情况下，查询应返回123456781235176。

感谢。

Answer 1

试试这个select IMEI from T1 where IMEI not in (select IMEI from T2);

Answer 2

SELECT t1.* FRO table1 AS t1
LEFT JOIN table2 AS t2 ON t1.IMEI = t2.IMEI
WHERE t2.IMEI IS NULL

Answer 3

尝试此查询

Select EMEI from t1 where EMEI not in (select EMEI from t2)

Answer 4

select IMEI from T1 where IMEI not in 
(
    select a.IMEI from T1 as a inner join T2 as b on a.IMEI = b.IMEI
) as exp

希望这会对你有所帮助

Answer 5

SELECT IMEI FROM T1 WHERE IMEI NOT IN(SELECT IMEI FROM T2);