@Position VARCHAR(50) = NULL, -- 职位条件,假设未提供 @WhereClause NVARCHAR(MAX) = '1 = 1'; -- 初始化WHERE子句,始终为真,方便后续拼接 -- 动态添加姓名条件 IF @Name IS NOT NULL BEGIN SET @WhereClause += N' AND Name LIKE ''%' + @Name + '%'' '; END -- 动态添加部门条件 IF ...
SalesOrderID, RevisionNumber, OrderDate FROM Sales.SalesOrderHeader WHERE EXISTS (SELECT 1 FROM sales.SalesPerson WHERE SalesYTD > 3000000 AND SalesOrderHeader.SalesPersonID = 执行这条SQL语句的时候,会作如下的对比: WHERE子句返回所有EXISTS子句为TRUE的记录. EXIST子句使用相关子查询. 外部查询通过SalesPersonI...
where条款。 应该是这样的: SELECT DateAppr, TimeAppr, TAT, LaserLTR, Permit, LtrPrinter, JobName, JobNumber, JobDesc, ActQty, (ActQty-LtrPrinted) AS L, (ActQty-QtyInserted) AS M, ((ActQty-LtrPrinted)-(ActQty-QtyInserted)) AS NFROM [test].[dbo].[MM]WHERE DateDropped = 0 --Thi...
SqlServerWhere后面CaseWhen语句的写法 SqlServerWhere后⾯CaseWhen语句的写法 select* from tb where(case when col='***'then'***'else'***'end)='***'
where条款。 应该是这样的: SELECT DateAppr, TimeAppr, TAT, LaserLTR, Permit, LtrPrinter, JobName, JobNumber, JobDesc, ActQty, (ActQty-LtrPrinted) AS L, (ActQty-QtyInserted) AS M, ((ActQty-LtrPrinted)-(ActQty-QtyInserted)) AS NFROM [test].[dbo].[MM]WHERE DateDropped = 0 --...
上述语句中,where子句的使用和平常的有所不同 ,如下 一般的是 字段作为搜索条件, 值作为过滤条件, 所以,灵活使用 可以让程序和sql 更加简单灵活,这只是一种方式
where DATENAME(DD, Weekday) IN (select dayId+1 from days) and Date not between hl.startDate and hl.endDate and c.isActive=1 order by employeeID,DAY 此查询的输出如下所示: 我要搜索的是,根据员工返回leaveID的计数(其中leaveID为null)。
java:82) Caused by: Error : 933, Position : 68, Sql = delete from org_reportcombinestru where code = '报表合并体系1';, OriginalSql = delete from org_reportcombinestru where code = '报表合并体系1';, Error Msg = ORA-00933: SQL 命令未正确结束 at oracle.jdbc.driver.T4CTTIoer11....
update 用户.base_label bl set bl.y =(select ob.max from (select max(obj.maxy) as maxy,bl.y,bl.label_id from 用户.base_obj obj,用户.base_label bl where obj.minx<=bl.x and bl.x <= obj.maxx and obj.miny <= bl.y and bl.y <= obj.maxy and obj.minz <= bl....
类似如下: select A.key,B.key,C.key from A,B,C where trim(A.key)=trim(B.fk) and trim(A.col)=trim(C.pk)。 在主表A(200多条记录)关联附表B(4万多条记录)时用了1秒钟时间,该值在不同机器执行可能有所差异,但比不加trim速度稍微慢一些,但是不是特别明显。 其sql语句类似如下: select A.key...