請原諒新手的無知!如何抓取執行sp_executesql中輸出參數的值?
如何獲取執行sp_executesql中輸出參數的值?
我可以看到輸出,但不能得到它:
DECLARE @LastActivity nvarchar(100)
DECLARE @LastActivityDate datetime
DECLARE @sql nvarchar(MAX)
DECLARE @RowsToProcess int
DECLARE @CurrentRow int
DECLARE @SelectCol1 nvarchar(100)
DECLARE @SelectCol2 nvarchar(100)
DECLARE @SelectCol3 nvarchar(100)
DECLARE @LastDate TABLE (RowID int not null primary key identity(1,1), col4 nvarchar(MAX), col5 sql_variant)
DECLARE @table1 TABLE (RowID int not null primary key identity(1,1), col1 nvarchar(100),col2 nvarchar(100),col3 nvarchar(100))
INSERT into @table1 (col1,col2,col3)(SELECT t.name AS col1, c.name AS col2, m.Field1 as col3
FROM sys.columns c INNER JOIN
sys.tables t ON c.object_id = t.object_id INNER JOIN
sys.schemas s ON t.schema_id = s.schema_id INNER JOIN
dbo.MERGE_TABLES m ON m.Table_Name=t.name
WHERE c.name LIKE '%[_]DATE%' and m.[Enabled]='Y')
SET @[email protected]@ROWCOUNT
SET @CurrentRow=0
WHILE @CurrentRow<@RowsToProcess
BEGIN
SET @[email protected]+1
SELECT @SelectCol1=col1,@SelectCol2=col2,@SelectCol3=col3 FROM @table1 WHERE [email protected]
SET @sql='SELECT ' + '[dbo].[ConvertToDatetime](MAX(' + @SelectCol2 + '))' + ' FROM ' + @SelectCol1 + ' Where ' + @SelectCol3 + ' = ' + '''0722607QZ'''
Declare @params as nvarchar(MAX)
Set @params = '@date sql_variant output'
Declare @date as sql_variant;
execute sp_executesql
@sql
,@params
,@date output
Select @date
INSERT into @LastDate VALUES (@sql, @date)
end
select col4,col5 from @LastDate
選擇COL4,從@LastDate COL5給我的SQL腳本CLO4但COL5是空的!我需要存儲@date,因爲我仍然需要獲得最大值(@date)
超過一百萬。
SET @sql='set @date =('SELECT ' + '[dbo].[ConvertToDatetime](MAX(' + @SelectCol2 + '))' + ' FROM ' + @SelectCol1 + ' Where ' + @SelectCol3 + ' = ' + '''0722607QZ''') '
上面的sql給了我錯誤:'。'附近的語法不正確。
SET @sql='set @date =(SELECT [dbo].[ConvertToDatetime](MAX(+ @SelectCol2 +))
FROM @SelectCol1 Where @SelectCol3 ''=0722607QZ'') '
上面的SQL給出了錯誤:必須聲明標量變量 「@ SelectCol2」
SET @sql='SELECT ' + @date + '=convert(nvarchar(100), [dbo].[ConvertToDatetime](MAX(' + @SelectCol2 + ')))' + ' FROM ' + @SelectCol1 + ' Where ' + @SelectCol3 + ' = ' + '''0722607QZ'''
the above produces the error : Implicit conversion from data type sql_variant to nvarchar is not allowed. Use the CONVERT function to run this query.
SET @sql='SELECT ' + @date + '=convert(nvarchar(MAX),(MAX(' + @SelectCol2 + '))' + ' FROM ' + @SelectCol1 + ' Where ' + @SelectCol3 + ' = ' + '''0722607QZ'''
the above produces no error but all output is NULL, no values.
你是一位非常善良的天才!但是,我收到一個錯誤:'。'附近的語法不正確。雖然。有任何想法嗎? – Fet
去向? @sql的值是什麼樣的? –
它不運行。我將它標記爲答案,因爲我確信它會修復它,但現在它給了我錯誤 – Fet