sql服务器中的子字符串

Question

我在格式中有一个字符串。 （例如902.5）
需要分割和收集到单独的变量，这在SQL Server 2008

DECLARE 
     @Core VARCHAR(10)='902.5', 
     @OrgNumber VARCHAR(6) = NULL, 
     @DeptNumber VARCHAR(2) = NULL 

     IF (NULLIF(@Core, '')) IS NOT NULL 
     BEGIN 
      SELECT @OrgNumber =SUBSTRING(@Core, 1, CHARINDEX('.', @Core) - 1), 
        @DeptNumber =SUBSTRING(@Core, CHARINDEX('.', @Core) + 1, LEN(@Core)) 

      SELECT @OrgNumber = upper(nullif(ltrim(nullif(rtrim(@OrgNumber), '')), '')), 
@DeptNumber = nullif(ltrim(nullif(rtrim(@DeptNumber), '')), '') 
     END 

然而，这不处理，其中包含组织REF（不使用部门REF）如情况902
如何我是否在同一陈述中优雅地处理案件？

Answer 1

更新查询。另外，请注意您的IF (NULLIF(@Core, '')) IS NOT NULL不正确。

DECLARE @Core  VARCHAR(10)='902', 
     @OrgNumber VARCHAR(6) = NULL, 
     @DeptNumber VARCHAR(2) = NULL 

IF @Core IS NOT NULL 
    BEGIN 
     SELECT @OrgNumber = CASE 
          WHEN Charindex('.', @Core) > 0 THEN 
          Substring(@Core, 1, Charindex('.', @Core) 
               - 1) 
          ELSE Substring(@Core, 1, Len(@Core)) 
          END, 
      @DeptNumber = CASE 
          WHEN Charindex('.', @Core) > 0 THEN 
          Substring(@Core, 
          Charindex('.', @Core) + 1 
          , Len(@Core)) 
          ELSE NULL 
          END 

     SELECT @OrgNumber = Upper(NULLIF(Ltrim(NULLIF(Rtrim(@OrgNumber), '')), '') 
         ), 
      @DeptNumber = NULLIF(Ltrim(NULLIF(Rtrim(@DeptNumber), '')), '') 
    END 

SELECT @OrgNumber, 
     @DeptNumber 

Answer 2

使用PARSENAME功能

DECLARE @Core VARCHAR(50)= '902.2' 

SELECT Parsename(@Core, CASE WHEN Charindex('.', @Core) > 0 THEN 2 ELSE 1 END) AS OrgNumber, 
     Parsename(@Core, CASE WHEN Charindex('.', @Core) > 0 THEN 1 ELSE 2 END) AS DeptNumber