如何使用 BULK INSERT 中的某个变量为 Lastrow 和 Firstrow 参数赋值？

Question

DECLARE @sqlCommand VARCHAR(MAX) DECLARE @NAME varchar (100)
DECLARE @FIRSTROW INT,@LASTROW INT
SET @FIRSTROW =
  (SELECT TOP 1 [Id]
   FROM [dbo].[TableB]
   ORDER BY [Id] DESC) + 1
SET @LASTROW = @FIRSTROW + 4
SELECT @NAME =
  (SELECT 'C:\InsertTestdata.txt')
SET NOCOUNT ON;


SET @sqlCommand = 'BULK INSERT [dbo].[TableA] FROM ''' + @NAME + '''
                            WITH (DATAFILETYPE = ''char'',
                            FIELDTERMINATOR = '','',
                            ROWTERMINATOR = '''+CHAR(10)+''',
                            FIRSTROW = 2,
                            LASTROW = '''+ @LASTROW +'''
                            );' 
EXEC (@sqlCommand);

执行上述脚本时出现错误 任何人都可以解释在批量插入语句中使用一些变量来给出 Lastrow 和 firstrow 参数的正确方法是什么？

Answer 1

类似这样的：

DECLARE @sqlCommand VARCHAR(MAX) DECLARE @NAME varchar (100)
DECLARE @FIRSTROW INT,@LASTROW INT
SET @FIRSTROW = 4
  --(SELECT TOP 1 [Id]
  -- FROM [dbo].[TableB]
  -- ORDER BY [Id] DESC) + 1
SET @LASTROW = @FIRSTROW + 4
SELECT @NAME =
  (SELECT 'C:\InsertTestdata.txt')
SET NOCOUNT ON;


SET @sqlCommand = concat('BULK INSERT [dbo].[TableA] FROM ''' , @NAME , '''
                            WITH (DATAFILETYPE = ''char'',
                            FIELDTERMINATOR = '','',
                            ROWTERMINATOR = ''\n'',
                            FIRSTROW = 2,
                            LASTROW = ', @LASTROW ,'
                            );' );
print @sqlCommand;

输出

BULK INSERT [dbo].[TableA] FROM 'C:\InsertTestdata.txt'
                            WITH (DATAFILETYPE = 'char',
                            FIELDTERMINATOR = ',',
                            ROWTERMINATOR = '\n',
                            FIRSTROW = 2,
                            LASTROW = 8
                            );