从CSV批量导入SQL [英] SQL Bulk import from CSV
问题描述
我需要将大型CSV文件导入SQL服务器。我正在使用这个:
BULK
INSERT CSVTest
FROM'c:\csvfile.txt '
和
(
FIELDTERMINATOR =',',
ROWTERMINATOR ='\n'
)
GO
问题是我所有的字段都被引号()包围,所以实际上一行看起来像是:
1,, 2,,有时带逗号,在里面,
我可以以某种方式批量导入它们并告诉SQL使用引号作为字段分隔符吗?
编辑:使用,作为分隔符的问题(如建议的示例)是:
大多数示例所做的是,它们导入的数据中包括第一个列和末尾的,然后继续进行删除。 my,我的第一列(也是最后一列)是日期时间,不允许将 20080902导入为日期时间。
我知道这不是一个真正的解决方案,但是我使用一个虚拟表进行导入,并为所有内容设置了nvarchar。然后执行插入操作,该操作将去除字符并进行转换。它不漂亮,但能胜任工作。
I need to import a large CSV file into an SQL server. I'm using this :
BULK
INSERT CSVTest
FROM 'c:\csvfile.txt'
WITH
(
FIELDTERMINATOR = ',',
ROWTERMINATOR = '\n'
)
GO
problem is all my fields are surrounded by quotes (" ") so a row actually looks like :
"1","","2","","sometimes with comma , inside", ""
Can I somehow bulk import them and tell SQL to use the quotes as field delimiters?
Edit: The problem with using '","' as delimiter, as in the examples suggested is that : What most examples do, is they import the data including the first " in the first column and the last " in the last, then they go ahead and strip that out. Alas my first (and last) column are datetime and will not allow a "20080902 to be imported as datetime.
From what I've been reading arround I think FORMATFILE is the way to go, but documentation (including MSDN) is terribly unhelpfull.
I know this isn't a real solution but I use a dummy table for the import with nvarchar set for everything. Then I do an insert which strips out the " characters and does the conversions. It isn't pretty but it does the job.
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