我使用带有参数的动态sql并遇到问题：）
在代码块中它可以工作，但是当我调用过程时出现错误，我需要声明标量变量@name_dummy
所以：
DECLARE @START_TIME DATETIME = GETDATE()
DECLARE @TMP_NAMES TABLE (
SCHEMA_N VARCHAR(500),
TABLE_N VARCHAR(500),
CONDITION VARCHAR(MAX),
TARGETDB VARCHAR(500),
SOURCEDB VARCHAR(500),
COLUMN_LIST VARCHAR(MAX)
)
DECLARE @SCHEMA_N VARCHAR(500)
DECLARE @TABLE_N VARCHAR(500)
DECLARE @CONDITION VARCHAR(MAX)
DECLARE @COLUMN_LIST VARCHAR(MAX)
DECLARE @TARGETDB VARCHAR(500)
DECLARE @SOURCEDB VARCHAR(500)
INSERT INTO @TMP_NAMES
SELECT
o.SCHEMA_N
,o.TABLE_N
,o.Condition
,o.TargetDB
,o.SourceDB
,STUFF((SELECT
', ' + c.name
FROM sys.columns c
WHERE c.object_id = o.object_id
AND c.system_type_id <> 189 /* Pomijam timestamp*/
ORDER BY c.column_id
FOR XML PATH (''))
, 1, 1, '')
FROM Table_A o
ORDER BY 1,
2
SELECT
SCHEMA_N
,TABLE_N
,CONDITION
,TARGETDB
,SOURCEDB
,COLUMN_LIST
FROM @TMP_NAMES
DECLARE KUR CURSOR
FOR
SELECT
SCHEMA_N
,TABLE_N
,CONDITION
,TARGETDB
,SOURCEDB
,COLUMN_LIST
FROM @TMP_NAMES
OPEN KUR
FETCH NEXT
FROM KUR
INTO @SCHEMA_N,
@TABLE_N,
@CONDITION,
@TARGETDB,
@SOURCEDB,
@COLUMN_LIST
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE @TOP VARCHAR(100)
SET @TOP = ( SELECT CAST(Wartosc AS VARCHAR) FROM Table_B WHERE Id = 3 )
IF @TOP < 40000
SET @TOP = 40000
WHILE ( 1 = 1 )
BEGIN
DECLARE @CHECK BIT = 0
DECLARE @sqlCMD NVARCHAR(MAX) = 'SELECT TOP 1 @check_exists = 1 FROM '
+ @SOURCEDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ' WHERE ' + @CONDITION
exec sp_executesql @sqlCMD, N'@check_exists bit OUTPUT, @START_TIME DATE', @check_exists = @CHECK OUTPUT, @START_TIME = @START_TIME;
SELECT @sqlCMD , @CHECK
END
END
FETCH NEXT
FROM KUR
INTO @SCHEMA_N,
@TABLE_N,
@CONDITION,
@TARGETDB,
@SOURCEDB,
@COLUMN_LIST
CLOSE KUR;
DEALLOCATE KUR
当我执行此操作时，它将编译并工作（返回值），例如要执行的sql。
SELECT TOP 1 @check_exists = 1 FROM MSSF15_WarstwaPosrednia.KatalogZdarzen.MSSF_RaportZdarzenPLKB2CS2K WHERE StatusPrzetwarzania = 4 AND DataWpisu < DATEADD(MONTH, -3, @START_TIME)
参数在这里起作用（@check_exists输出和@START_TIME条件参数），但是当我在过程中执行此操作时，我会出错
必须声明标量变量“ @START_TIME”。 137
SP定义：
USE xxxx
/****** Object: StoredProcedure dbo.dummy Script Date: 06/09/2018 13:40:22 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE dbo.dummy
AS
BEGIN
/*
PRZENIESIENIE DANYCH
*/
DECLARE @START_TIME DATETIME = GETDATE()
DECLARE @TMP_NAMES TABLE (
SCHEMA_N VARCHAR(500),
TABLE_N VARCHAR(500),
CONDITION VARCHAR(MAX),
TARGETDB VARCHAR(500),
SOURCEDB VARCHAR(500),
COLUMN_LIST VARCHAR(MAX)
)
DECLARE @SCHEMA_N VARCHAR(500)
DECLARE @TABLE_N VARCHAR(500)
DECLARE @CONDITION VARCHAR(MAX)
DECLARE @COLUMN_LIST VARCHAR(MAX)
DECLARE @TARGETDB VARCHAR(500)
DECLARE @SOURCEDB VARCHAR(500)
INSERT INTO @TMP_NAMES
SELECT o.SCHEMA_N,
o.TABLE_N,
o.Condition,
o.TargetDB,
o.SourceDB,
STUFF((
SELECT ', ' + c.NAME
FROM sys.columns c
WHERE c.object_id = o.object_id
AND c.system_type_id <> 189 /* Pomijam timestamp*/
ORDER BY c.column_id
FOR XML PATH('')
), 1, 1, '')
FROM dbo.Table_A o
ORDER BY 1,
2
SELECT SCHEMA_N,
TABLE_N,
CONDITION,
TARGETDB,
SOURCEDB,
COLUMN_LIST
FROM @TMP_NAMES
DECLARE KUR CURSOR
FOR
SELECT SCHEMA_N,
TABLE_N,
CONDITION,
TARGETDB,
SOURCEDB,
COLUMN_LIST
FROM @TMP_NAMES
OPEN KUR
FETCH NEXT
FROM KUR
INTO @SCHEMA_N,
@TABLE_N,
@CONDITION,
@TARGETDB,
@SOURCEDB,
@COLUMN_LIST
WHILE @@FETCH_STATUS = 0
BEGIN
DECLARE @TOP VARCHAR(100)
SET @TOP = (
SELECT CAST(Wartosc AS VARCHAR)
FROM dbo.Table_B
WHERE Id = 3
)
IF @TOP < 40000
SET @TOP = 40000
WHILE (1 = 1)
BEGIN
BEGIN TRY
BEGIN TRANSACTION T_TEST
DECLARE @CHECK BIT = 0
DECLARE @START_TIME_P DATE = GETDATE()
DECLARE @sqlCMD NVARCHAR(MAX) = 'SELECT TOP 1 @check_exists = 1 FROM ' + @SOURCEDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ' WHERE ' + @CONDITION
SELECT @CHECK,
@START_TIME_P,
@sqlCMD
EXEC sp_executesql @sqlCMD,
N'@check_exists bit OUTPUT, @START_TIME DATE',
@check_exists = @CHECK OUTPUT,
@START_TIME = @START_TIME_P;
IF OBJECT_ID('tempdb..#TMP_ID') IS NOT NULL
DROP TABLE #TMP_ID
CREATE TABLE #TMP_ID (Id INT)
EXEC (
'INSERT INTO #TMP_ID
SELECT TOP ' + @TOP + ' Id
FROM ' + @SOURCEDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ' WHERE ' + @CONDITION
)
DECLARE @sqlCMD_Ins NVARCHAR(MAX)
SET @sqlCMD_Ins = 'INSERT INTO ' + @TARGETDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ' '
SET @sqlCMD_Ins = @sqlCMD_Ins + 'SELECT ' + @COLUMN_LIST + ' FROM ' + @SOURCEDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ' WHERE Id IN ( SELECT Id FROM #TMP_ID )'
IF @sqlCMD_Ins IS NULL
RAISERROR (
'Brak polecenia insert @sqlCMD_Ins',
16,
1
)
EXEC (@sqlCMD_Ins)
DECLARE @sqlCMD_Del NVARCHAR(MAX)
SET @sqlCMD_Del = 'DELETE FROM ' + @SOURCEDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ' WHERE Id IN ( SELECT Id FROM #TMP_ID )'
IF @sqlCMD_Del IS NULL
RAISERROR (
'Brak polecenia insert @sqlCMD_Ins',
16,
1
)
EXEC (@sqlCMD_Del)
DROP TABLE #TMP_ID
COMMIT TRANSACTION T_TEST
END TRY
BEGIN CATCH
IF (@@TRANCOUNT > 0)
BEGIN
ROLLBACK TRANSACTION T_TEST
PRINT 'Wycofanie zmian'
PRINT ERROR_MESSAGE() + ' ' + CAST(ERROR_NUMBER() AS VARCHAR(256))
END
END CATCH
IF @CHECK = 0
BREAK
END
EXEC ('SELECT ''' + @SOURCEDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ''' AS DB ,COUNT(1) AS ILOSC FROM ' + @SOURCEDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ' UNION ALL ' + 'SELECT ''' + @TARGETDB + '.' + @SCHEMA_N + '.' + @TABLE_N + ''' AS DB ,COUNT(1) AS ILOSC FROM ' + @TARGETDB + '.' + @SCHEMA_N + '.' + @TABLE_N)
FETCH NEXT
FROM KUR
INTO @SCHEMA_N,
@TABLE_N,
@CONDITION,
@TARGETDB,
@SOURCEDB,
@COLUMN_LIST
END
CLOSE KUR;
DEALLOCATE KUR;
DECLARE @END_TIME DATETIME = GETDATE()
SELECT 'Daty przetworzenia',
@START_TIME_P AS 'START',
@END_TIME AS 'END'
SELECT 'Czas (min)',
DATEDIFF(MINUTE, @START_TIME_P, @END_TIME)
END
伙计们，也许您有类似的情况并且可以提供帮助。
错误消息
Wycofanie zmian Must declare the scalar variable "@START_TIME". 137
谢谢
答案 0 :(得分：-1)
代替
exec sp_executesql @sqlCMD, N'@check_exists bit OUTPUT, @START_TIME DATE', @check_exists = @CHECK OUTPUT, @START_TIME = @START_TIME;
尝试
declare @date_in DATE = GETDATE()
exec sp_executesql @sqlCMD, N'@check_exists bit OUTPUT, @START_TIME DATE', @check_exists = @CHECK OUTPUT, @START_TIME = @date_in;