0
我有以下查询:子查询与更新语句在SQL
SELECT
CONVERT(datetime, CONVERT(varchar, new_time, 101)) As day,
datepart(hh,new_time) As hour,count(*) As Total
FROM
log_table
WHERE
new_time > GETDATE() - 180
GROUP BY
CONVERT(datetime, CONVERT(varchar, new_time, 101)),datepart(dd,new_time), datepart(hh,new_time)
ORDER BY
CONVERT(datetime, CONVERT(varchar, new_time, 101)), datepart(hh,new_time));
我需要更新基于其结果表“tmp_table的”。我尝试以下,但它不工作:
UPDATE tmp_table
SET count=Total
WHERE date=day AND hour=hour
FROM
(
select CONVERT(datetime, CONVERT(varchar, new_time, 101)) As day,
datepart(hh,new_time) As hour,count(*) As Total
from log_table
where new_time > GETDATE() - 180
group by CONVERT(datetime, CONVERT(varchar, new_time, 101)),datepart(dd,new_time),
datepart(hh,new_time)
order by CONVERT(datetime, CONVERT(varchar, new_time, 101)), datepart(hh,new_time))
)
我需要从子查询获得“总”,“日”和“小时”的值。
MySQL和SQL服务器是不同的RDBMS。你在用哪个? –
我正在使用mssql – chinnusaccount