大师作文网sql函数,select count(A.abc) as sum from A left join B on A.id=
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sql函数,select count(A.abc) as sum from A left join B on A.id=B.id where A.abc='1' group by A.abc
结果是 sum
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怎么求count(A.abc) as sum 的总数.
结果是 sum
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怎么求count(A.abc) as sum 的总数.
SELECT
SUM ( t.iSum ) as sum
FROM
(
select count(A.abc) as iSum from A left join B on A.id=B.id where A.abc='1' group by A.abc
);
或者
select count(A.abc) as sum from A left join B on A.id=B.id where A.abc='1'
SUM ( t.iSum ) as sum
FROM
(
select count(A.abc) as iSum from A left join B on A.id=B.id where A.abc='1' group by A.abc
);
或者
select count(A.abc) as sum from A left join B on A.id=B.id where A.abc='1'
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