SELECT dbo.PAPersonInfo.Employee, dbo.PAWageSetCalculate.DesignFormulas
FROM dbo.PAPersonInfo RIGHT OUTER JOIN
dbo.PAWageSetCalculate ON
dbo.PAPersonInfo.WageType = dbo.PAWageSetCalculate.WageType LEFT OUTER JOIN
dbo.PADept ON dbo.PAPersonInfo.FactoryID = dbo.PADept.FactoryID AND
dbo.PAPersonInfo.DeptID = dbo.PADept.DeptId LEFT OUTER JOIN
datasource.dbo.AttenResultA A ON A.EmpID = dbo.PAPersonInfo.EmpID AND
A.Yea = '2010' AND A.Mon = '8' LEFT OUTER JOIN
dbo.PAWorkStationInfo W ON dbo.PAPersonInfo.WorkStation = W.WorkStationID AND
dbo.PAWageSetCalculate.WageItem = N'TryWorkDay'结果
姓名Employee 日期DesignFormulas(套用动态编写的公式计算,这个公式是不固定的)
张三 CONVERT(VARCHAR(10), CASE WHEN IncomeDate IS NULL THEN NULL
ELSE CASE WHEN W.WorkStation = ''员工''
OR W.WorkStation =''技工''
THEN 60
+ IncomeDate
ELSE IncomeDate
+ 90
END
END, 120) 请问,如何把公式参与进来查询..涉及公式的字段有几十个,希望能有简便通用些方法为这公式纠结我好几星期了,求助
--动态sql语句基本语法
1 :普通SQL语句可以用Exec执行 eg: Select * from tableName
Exec('select * from tableName')
Exec sp_executesql N'select * from tableName' -- 请注意字符串前一定要加N 2:字段名,表名,数据库名之类作为变量时,必须用动态SQL eg:
declare @fname varchar(20)
set @fname = 'FiledName'
Select @fname from tableName -- 错误,不会提示错误,但结果为固定值FiledName,并非所要。
Exec('select ' + @fname + ' from tableName') -- 请注意 加号前后的 单引号的边上加空格 当然将字符串改成变量的形式也可
declare @fname varchar(20)
set @fname = 'FiledName' --设置字段名 declare @s varchar(1000)
set @s = 'select ' + @fname + ' from tableName'
Exec(@s) -- 成功
exec sp_executesql @s -- 此句会报错 declare @s Nvarchar(1000) -- 注意此处改为nvarchar(1000)
set @s = 'select ' + @fname + ' from tableName'
Exec(@s) -- 成功
exec sp_executesql @s -- 此句正确 3. 输出参数
declare @num int,
@sqls nvarchar(4000)
set @sqls='select count(*) from tableName'
exec(@sqls)
--如何将exec执行结果放入变量中? declare @num int,
@sqls nvarchar(4000)
set @sqls='select @a=count(*) from tableName '
exec sp_executesql @sqls,N'@a int output',@num output
select @num
dbo.PAWorkStationInfo W ON
dbo.PAPersonInfo.WorkStation = W.WorkStationID
AND
dbo.PAWageSetCalculate.WageItem = N'TryWorkDay'拼接的时候 红色部分不知道如何拼接啊
declare @TryWorkDay varchar(2000)
select @TryWorkDay = DesignFormulas FROM dbo.PAWageSetCalculate WHERE WageItem = N'TryWorkDay'
set @sql = 'SELECT Employee,TryWorkDay =('+@TryWorkDay+') FROM dbo.PAPersonInfo'
exec(@sql)select @TryWorkDay = DesignFormulas FROM dbo.PAWageSetCalculate
WHERE WageItem = N'TryWorkDay' and (。。如dbo.PAPersonInfo.WorkStation = W.WorkStationID )
求助
--只能用游标。
declare @sql varchar(8000)
declare @TryWorkDay varchar(2000)
declare @WageType intdeclare curwagetype cursor for
select WageType from PAPersonInfo
open curwagetype
fetch next from curwagetype into @WageType
while @@fetch_status = 0
begin
select @TryWorkDay = DesignFormulas FROM dbo.PAWageSetCalculate WHERE WageItem = N'TryWorkDay' and WageType = @WageType --如果需要并成一个结果集输出,可以定义一个临时表,将各结果集插入临时表中
--set @sql = 'insert into #t(...)'
set @sql = 'SELECT dbo.PAPersonInfo.Employee, TryWorkDay =('+@TryWorkDay+')
FROM dbo.PAPersonInfo
LEFT OUTER JOIN dbo.PADept
ON dbo.PAPersonInfo.FactoryID = dbo.PADept.FactoryID AND dbo.PAPersonInfo.DeptID = dbo.PADept.DeptId
LEFT OUTER JOIN datasource.dbo.AttenResultA A
ON A.EmpID = dbo.PAPersonInfo.EmpID AND A.Yea = ''2010'' AND A.Mon = ''8''
LEFT OUTER JOIN dbo.PAWorkStationInfo W
ON dbo.PAPersonInfo.WorkStation = W.WorkStationID' exec(@sql) fetch next from curwagetype into @WageType
end
close curwagetype
deallocate curwagetype
declare @TryWorkDay varchar(2000)
declare @WageType intdeclare curwagetype cursor for
select WageType from PAPersonInfo
open curwagetype
fetch next from curwagetype into @WageType
while @@fetch_status = 0
begin
select @TryWorkDay = DesignFormulas FROM dbo.PAWageSetCalculate WHERE WageItem = N'TryWorkDay' and WageType = @WageType --如果需要并成一个结果集输出,可以定义一个临时表,将各结果集插入临时表中
--set @sql = 'insert into #t(...)'
set @sql = 'SELECT dbo.PAPersonInfo.Employee, TryWorkDay =('+@TryWorkDay+')
FROM dbo.PAPersonInfo
LEFT OUTER JOIN dbo.PADept
ON dbo.PAPersonInfo.FactoryID = dbo.PADept.FactoryID AND dbo.PAPersonInfo.DeptID = dbo.PADept.DeptId
LEFT OUTER JOIN datasource.dbo.AttenResultA A
ON A.EmpID = dbo.PAPersonInfo.EmpID AND A.Yea = ''2010'' AND A.Mon = ''8''
LEFT OUTER JOIN dbo.PAWorkStationInfo W
ON dbo.PAPersonInfo.WorkStation = W.WorkStationID
WHERE dbo.PAPersonInfo.WageType = '+CAST(@WageType AS VARCHAR(20)) exec(@sql) fetch next from curwagetype into @WageType
end
close curwagetype
deallocate curwagetype
也用变量也表示好了。