Question

大家好我在sql server 2008工作，我不知道在这里我写了脚本我从两列获取数据，我有两个路径来调用数据我想知道，如果在那两列中一列是空的或空白我想检查在其他路径这里写了一些错误的你可以帮助

Tahnks in Advance

DECLARE @xmltbl TABLE (ID INT, XmlData XML)
INSERT INTO @xmltbl(ID, XmlData) 
VALUES((select Id from News where sId=129),(select content from News where sId=129));
;WITH XMLNAMESPACES (DEFAULT 'http:microsoft.com')
SELECT ID, C.value('(.)[1]', 'varchar(1000)') DataText  FROM   @xmltbl
  CROSS APPLY
 XmlData.nodes('/BreezyCalc/Graph/point') n (C)

 select DataText from @xmltbl  

  if (DataText ="")
  BEGIN
  INSERT INTO @xmltbl(ID, XmlData) 
VALUES((select Id from News where sId=129),(select content from News where sId=129));
;WITH XMLNAMESPACES (DEFAULT 'http://schemas.microsoft.com/winfx/2006/xaml/presentation')
SELECT ID, C.value('(.)[1]', 'varchar(1000)') DataText  FROM   @xmltbl
  CROSS APPLY
 XmlData.nodes('BreezyCalc/Graph/point/@Text') n (C)

select DataText from @xmltbl

  END

结果应该是

ID     DataText 
-------------------
129   |lines added

Answer 1

DECLARE @Datatext as varchar(200)=''
    ,IDParameter as Int = 129
SET @Datatext= (select top 1 XMLData from @xmltbl where ID=@IDParameter)

if ISNULL(@DataText,'') ='' 
    BEGIN 
        some code here 
    END
ELSE IF (Some Other Condition)
    BEGIN 
        some code here 
    END

如果它是一个逻辑流程，你可以省略IF (Some Other Condition)。

如何在sqlserver 2008中编写if else条件在单个表中插入数据？

1 个答案: