希望提高以下sql语句的性能,因为这需要7秒以上的时间来搜索850,000条记录。select c.productTitle , s1.catalogue_id FROM store s1 ON s1.catalogue_id = c.catalogue_id JOIN store s2
ON (s1.catalogue_id
则需要对第4列进行左连接,并将第4列包括在group by中SELECT a.Ledgerid, CASEEND (is it possilbe to completly do not have this column if @chk <> 0) LEFTJOIN LedgerAddress AS B ON A.LedgerID = B.LedgerID
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我有下面的SQL查询,我需要它只运行一次SELECT语句。编辑:需要更改为只使用一条SELECT语句。JOIN Config.Organization CO on BU.OrganizationId = CO.OrganizationIdELSE FROM Config.BusinessUnit BU
我试图在case语句结束后调用sql函数,但遇到错误。我在以下sql查询中遇到错误。emp.LastName),'-') dbo.EmployeeScheduleTime(scdle.StartTime,scdle.EndTIme), END dbo.GetDayNameWithDate(scdle.Date)
FROM Employee emp <