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[英]How to compare a column value with multiple values from another column in the same table in SQL
[英]How to compare multiple column with same values (Oracle SQL)
我需要在不使用WHERE
子句中使用多个AND
条件的情况下,一次比较表中具有相同值集的多个值。 请让我知道执行此操作的任何方法。
select count(1)
from test
where pre_sys_id1 in (select sys_id from test where auto_id = 10)
and pre_sys_id2 in (select sys_id from test where auto_id = 10)
and pre_sys_id3 in (select sys_id from test where auto_id = 10)
and pre_sys_id4 in (select sys_id from test where auto_id = 10)
;
Select count(1)
from test
where (select sys_id from test where auto_id=10) = all (pre_sys_id1,pre_sys_id2,pre_sys_id3,pre_sys_id4)
或加入
Select count(1)
from test t1
join test t2 on( sys_id= pre_sys_id1 and sys_id= pre_sys_id2 and sys_id= pre_sys_id3 and sys_id= pre_sys_id4)
where t2.auto_id = 10 ;
你可以试试:
select count(1)
from test
where (pre_sys_id1, pre_sys_id2, pre_sys_id3, pre_sys_id4)
in (select sys_id, sys_id, sys_id, sys_id from test where auto_id = 10)
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