批量 SQL 中的错误“WITH 语句”

Question

您好，我创建的存储过程有问题。我遇到了一个语法错误，'@path'附近的语法不正确。

如果我输入绝对路径 'J:\TestCSV\ImportData.csv' 我没有收到任何错误。但是如果我声明参数，我会收到上面提到的这个错误。这是我的存储过程。希望得到您的帮助。

Create PROCEDURE [dbo].[FileUpload]

 As
BEGIN


DECLARE @path VARCHAR(256); -- path   
DECLARE @fileName VARCHAR(256); -- filename   
DECLARE @fileDate VARCHAR(20); -- used for file date
SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112) ;
SET @fileName = 'ImportData' + '_' + @fileDate + '.csv';
SET @path = 'J:\TestCSV\' + @fileName;

BULK

INSERT [dbo].[temp_Cemetery]
--FROM 'E:\CSVTest\ImportDataYYYYMMDD.csv'
FROM @path  -- Error Here Incorrect syntax near '@path'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = '\n'
)


END

Answer 1

问题是您需要转义引号附近的反斜杠：

SET @path = 'J:\\TestCSV\\' + @fileName;

这是因为反斜杠是一个特殊字符，并且由于您转义了单引号，因此它将语句的其余部分视为字符串的一部分。我在下面为你修好了。

Create PROCEDURE [dbo].[FileUpload]

 As
BEGIN


DECLARE @path VARCHAR(256); -- path   
DECLARE @fileName VARCHAR(256); -- filename   
DECLARE @fileDate VARCHAR(20); -- used for file date
SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112) ;
SET @fileName = 'ImportData' + '_' + @fileDate + '.csv';
SET @path = 'J:\\TestCSV\\' + @fileName;

BULK

INSERT [dbo].[temp_Cemetery]
--FROM 'E:\CSVTest\ImportDataYYYYMMDD.csv'
FROM @path  -- Error Here Incorrect syntax near '@path'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = '\n'
)


END

Answer 2

出于某种原因，您必须使用字符串文字。您可能必须使用动态 sql，例如

CREATE PROCEDURE [dbo].[FileUpload]
AS
BEGIN


DECLARE @path VARCHAR(256); -- path   
DECLARE @fileName VARCHAR(256); -- filename   
DECLARE @fileDate VARCHAR(20); -- used for file date
SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112) ;
SET @fileName = 'ImportData' + '_' + @fileDate + '.csv';
SET @path = 'J:\\TestCSV\\' + @fileName;
DECLARE @sql varchar(8000)

SET @sql = 'BULK INSERT [dbo].[temp_Cemetery]
FROM ''' + @path + '''
WITH
(
    FIELDTERMINATOR = '','',
    ROWTERMINATOR = ''\n''
)'

EXEC (@sql)

END

Answer 3

您需要在路径中添加引号，以便您的 FROM 子句将其读取为 'J:\TestCSV\ImportData_20170104.csv' 而不是 J:\TestCSV\ImportData_20170104.csv

Create PROCEDURE [dbo].[FileUpload]

 As
BEGIN


DECLARE @path VARCHAR(256); -- path   
DECLARE @fileName VARCHAR(256); -- filename   
DECLARE @fileDate VARCHAR(20); -- used for file date
SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112) ;
SET @fileName = 'ImportData' + '_' + @fileDate + '.csv';
SET @path = '''J:\TestCSV\' + @fileName +'''';



BULK
INSERT [dbo].[temp_Cemetery]
--FROM 'E:\CSVTest\ImportDataYYYYMMDD.csv'
FROM @path  -- Error Here Incorrect syntax near '@path'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = '\n'
)


END