如何在执行动态@Query 时创建表

Posted 2023-04-19

【中文标题】如何在执行动态@Query 时创建表

【英文标题】：How can create a table while Execute dynamic @Query

【发布时间】：2021-10-08 04:06:31

【问题描述】：

我的 sp 中有一个动态查询，其中包含与用户将输入的输入相关的不同列。之后，在 sp 中，我想将它的结果加入 sp 的剩余部分。所以我应该有用于连接的表，正如我提到的，我不能有静态字段所以我的问题是如何在运行查询时删除表并创建它，而不是创建静态表，每次截断它并插入其中固定的。 为了解决我的问题，我复制了我的 sp 的文字可能会有所帮助！

ALTER PROC SP_DamageVasting (@BranchId int , @FromYear int , @ToYear int  ) 
AS 
BEGIN


DECLARE @Cols1    AS NVARCHAR(MAX)=''
DECLARE @Cols2   AS NVARCHAR(MAX)=''
DECLARE @Query1   AS NVARCHAR(MAX);
DECLARE @Query2  AS NVARCHAR(MAX);
WHILE (@FromYear <= @ToYear)
BEGIN 
SET @Cols1 =@Cols1+'['+CONVERT (nchar(4),@FromYear)+'],'
SET @Cols2 =@Cols2 +'SUM(['+CONVERT (nchar(4),@FromYear)+']) AS ['+CONVERT 
(nchar(4),@FromYear)+'],'
SET  @FromYear=@FromYear+1
END 

 SELECT @Query1 ='SELECT PolicyId , BnIssueYear , BranchId , BranchName ,'+ LEFT(@Cols1 
 ,LEN(@Cols1)-1)+
   'FROM (SELECT PolicyId , LEFT( Hv.FVsodurDate, 4) AS BnSodurYear ,P.BranchCode AS BranchId, 
   L.Name AS BranchName ,
   LEFT(HV.Date , 4) AS HvYear , SUM(HV.HVAmount) AS HvAmount
    FROM         DWHdb.amr.V_FactHV AS Hv 
    INNER JOIN   DWHdb.cmn.DimLocationNode AS P  (nolock) ON P.LocationId = Hv.FVBNIssueId AND 
   Hv.FVIssueDate BETWEEN P.Fromdate AND P.ToDate
    INNER JOIN   DWHdb.cmn.DimLocation     AS L           ON L.LocationId = P.BranchCode 
   WHERE Hv.FVIssueDate>''2010-01-01'' AND BranchCode = '+CONVERT (nchar(3),@BranchId)+'
  GROUP BY 
 PolicyId , 
  LEFT( Hv.FVIssueDate, 4)  ,
 P.BranchCode, 
 L.Name ,
 LEFT(HV.Date , 4))AS A 
 PIVOT (SUM(HvAmount) FOR HvYear IN ('+ LEFT(@Cols1 ,LEN(@Cols1)-1)+')) AS V'

  TRUNCATE TABLE [ApiFanavaranService].Bpmn.DamagePerYear  --- *****Here I want to have 
 dynamic table and each time drop and create it *********
 
 INSERT   INTO  [ApiFanavaranService].Bpmn.DamagePerYear
 EXEC (@Query1);

 SELECT @Query2='SELECT BNYear  ,SUM(Prm)  AS Prm,'+LEFT(@Cols2 ,LEN(@Cols2)-1)+'
FROM (
SELECT 
BN.PolicyId ,
LN.BranchCode  , 
LEFT(BN.FVIssueDate ,4) AS BNYear , 
SUM(BN.Prm ) AS Prm
FROM 
 DWHdb.amr.FactAmarBn AS BN  INNER JOIN
 DWHdb.cmn.DimLocationNode AS LN ON BN.FVIssueId = LN.LocationId  AND 
BN.FVIssueDate>=LN.FromDate AND BN.FVIssueDate<=LN.ToDate
WHERE BN.FVSodurDate >=''2010-01-01''  AND LN.BranchCode ='+CONVERT 
(nchar(3),@BranchId)+'
GROUP BY 
  BN.PolicyId ,
LN.BranchCode, 
LEFT(BN.FVIssueDate ,4)) AS A LEFT JOIN 
ApiFanavaranService.Bpmn.DamagePerYear AS F ON 
 A.PolicyId=F.PolicyId AND A.BNYear=F.BnIssueYear
GROUP BY BNYear'

 EXEC (@Query2);

END 

【参考方案1】：

我自己找到了答案并且它工作正常。 我只是将下面的代码添加到我的代码中，我创建表也是动态查询并运行它 sp_executesql。 我只是想帮助和我有同样问题的人。

 DECLARE @Col1    AS NVARCHAR(MAX)=''
 DECLARE @Col2    AS NVARCHAR(MAX)=''
 DECLARE @Col3    AS NVARCHAR(MAX)=''
 DECLARE @Query1  AS NVARCHAR(MAX);
 DECLARE @Query2  AS NVARCHAR(MAX);
 DECLARE @Query3  AS NVARCHAR(MAX);
 WHILE (@FromYear <= @ToYear)
 BEGIN 
  SET @Col1 = @Col1+'['+CONVERT (nchar(4),@FromYear)+'],'
  SET @Col2 = @Col2 +'SUM(['+CONVERT (nchar(4),@FromYear)+']) AS ['+CONVERT 
  (nchar(4),@FromYear)+'],'
  SET @Col3 = @Col3 +'['+CONVERT (nchar(4),@FromYear)+'] decimal(38,6),'
   SET  @FromYear=@FromYear+1
   END 
   DROP TABLE Bpmn.DamagePerYear
  SET @Query3 = 'CREATE TABLE [ApiFanavaranService].Bpmn.DamagePerYear (
   PolicyId  int , 
  BnIssueYear  int,
  BranchId int, 
   BranchName nchar(200) , '+   
  LEFT(@Col3 ,LEN(@Col3)-1)+')' 
 EXEC sp_executesql @Query3