高级SQL查询，需要添加另一个表和员工ID

我是高级SQL的新手。我有一个需要添加变量的查询。它需要连接到employee表，并且只显示该特定employeeId的记录。这是Outsystems和高级SQL查询。有什么想法吗

这就是我需要添加的：Employee.EmployeeId=EmployeeId或EmployeeId=NullIdentifier

我需要将以上内容添加到一些how中的现有查询：

Select 
      EMPLOYEEDISPLAYNAME ,
      ISNULL(Sick.Total,0.00) as SickValue,
      ISNULL( Vacation.Total,0.00) as VacationValue
   from 
      {Employee} 
         left join 
         ( Select 
                 EMPLOYEEID,
                 Sum( DEPOSITVALUE ) - Sum( WITHDRAWLVALUE ) as Total
              from 
                 {TimeOffRegisterEntry}
                    join {TimeOffRegister} 
                       on {TimeOffRegisterEntry}.TimeOffRegisterId = {TimeOffRegister}.TimeOffRegisterId 
                    join {TimeOffYear} 
                       on {TimeOffRegister}.TimeOffYearId = {TimeOffYear}.TimeOffYearId 
              where 
                     TIMEOFFTYPE = @VacationType 
                 and {TimeOffYear}.[TimeOffYearId] = @Year 
              group by 
                 EMPLOYEEID 
              having 
                 Sum( DEPOSITVALUE ) - Sum( WITHDRAWLVALUE ) < 0
         ) as Vacation 
           on {Employee}.EmployeeId = Vacation.EMPLOYEEID 

         left join 
         ( Select 
                 EMPLOYEEID,
                 Sum( DEPOSITVALUE ) - Sum( WITHDRAWLVALUE ) as Total
              from 
                 {TimeOffRegisterEntry}   
                    join {TimeOffRegister}  
                       on {TimeOffRegister}.TimeOffRegisterId = {TimeOffRegisterEntry}.TimeOffRegisterId
                    join {TimeOffYear} 
                       on {TimeOffRegister}.TimeOffYearId = {TimeOffYear}.TimeOffYearId 
              where 
                     TIMEOFFTYPE = @SickType 
                 and {TimeOffYear}.[TimeOffYearId] = @Year 
              group by 
                 EMPLOYEEID 
              having 
                 Sum( DEPOSITVALUE ) - Sum( WITHDRAWLVALUE ) < 0
         ) as Sick
            on {Employee}.EmployeeId = Sick.EMPLOYEEID 

   where 
         Vacation.total is not null 
      or Sick.Total is not null

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我认为您应该看看这里建议的机制，传入一个输入变量并设置“expand”：

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Outsystems论坛是一种知识的载体！他们的功劳

您需要向查询EmployeeId添加一个新参数，可能是EmployeeId Identifier类型，并将该条件添加到查询中

在不了解完整数据库结构的情况下：

仅在条件足够的最外层添加它 可能还需要将其添加到内部查询中/优化查询 最后，查询看起来像

Select 
  EMPLOYEEDISPLAYNAME ,
  ISNULL(Sick.Total,0.00) as SickValue,
  ISNULL( Vacation.Total,0.00) as VacationValue
from 
  {Employee} 
     left join 
     ( Select 
             EMPLOYEEID,
             Sum( DEPOSITVALUE ) - Sum( WITHDRAWLVALUE ) as Total
          from 
             {TimeOffRegisterEntry}
                join {TimeOffRegister} 
                   on {TimeOffRegisterEntry}.TimeOffRegisterId = {TimeOffRegister}.TimeOffRegisterId 
                join {TimeOffYear} 
                   on {TimeOffRegister}.TimeOffYearId = {TimeOffYear}.TimeOffYearId 
          where 
                 TIMEOFFTYPE = @VacationType 
             and {TimeOffYear}.[TimeOffYearId] = @Year 
             AND (@EmployeeId = 0 OR EMPLOYEEID = @EmployeeId)
          group by 
             EMPLOYEEID 
          having 
             Sum( DEPOSITVALUE ) - Sum( WITHDRAWLVALUE ) < 0
     ) as Vacation 
       on {Employee}.EmployeeId = Vacation.EMPLOYEEID 

     left join 
     ( Select 
             EMPLOYEEID,
             Sum( DEPOSITVALUE ) - Sum( WITHDRAWLVALUE ) as Total
          from 
             {TimeOffRegisterEntry}   
                join {TimeOffRegister}  
                   on {TimeOffRegister}.TimeOffRegisterId = {TimeOffRegisterEntry}.TimeOffRegisterId
                join {TimeOffYear} 
                   on {TimeOffRegister}.TimeOffYearId = {TimeOffYear}.TimeOffYearId 
          where 
                 TIMEOFFTYPE = @SickType 
             and {TimeOffYear}.[TimeOffYearId] = @Year 
              AND (@EmployeeId = 0 OR EMPLOYEEID = @EmployeeId)
          group by 
             EMPLOYEEID 
          having 
             Sum( DEPOSITVALUE ) - Sum( WITHDRAWLVALUE ) < 0
     ) as Sick
        on {Employee}.EmployeeId = Sick.EMPLOYEEID 

where 
    (@EmployeeId = 0 OR {Employee}.[EmployeeId] = @EmployeeId)
    AND (
         Vacation.total is not null 
      or Sick.Total is not null
    )

在上述代码段中查找对@EmployeeId的引用

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请注意和。。。或包装备用条件

哪个dbms？那里有些非ANSI SQL。。。另外，您是否可以尝试格式化查询，以便无需太多努力即可读取？