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分享困扰，如何写这句SQL语句？
删除table2中与table1 a字段值相同，b时间相差三秒的记录。
create table #table1
(
a char(30) not null,
b datetime not null
)
create table #table2
(
a char(30) not null,
b datetime not null
)
create table #table1
(
a char(30) not null,
b datetime not null
)
create table #table2
(
a char(30) not null,
b datetime not null
)
...全文
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xiaoyutianzi 2003-01-18
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delete #table2
from #table2 t1
join #table1 t2 on(t1.a=t2.a)
where datediff(second,t2.b,t1.b)=3
from #table2 t1
join #table1 t2 on(t1.a=t2.a)
where datediff(second,t2.b,t1.b)=3
hjhing 2003-01-17
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delete #table2
from #table1 as T
where a= T.a and datediff(second,T.b,b)=3
from #table1 as T
where a= T.a and datediff(second,T.b,b)=3
