Ignore certain columns when using BULK INSERT

问题:

I have a comma delimited text file with the structure

field1   field2   field3   field4
1        2        3        4

I wrote the following script to bulk insert the text file, but I wanted to leave out column 3

create table test (field1 varchar(50),field2 varchar(50),field4 varchar(50))
go
bulk insert test
from 'c:\myFilePath'
with 
(fieldterminator=',',
rowterminator='\n'
)

The insert worked fine, but the results of the insert made field4 look like field3,field4, so the field 3 was actually just concatenated onto field4. The flat files I'm working with are several gigs and can't be easily modified. Is there a way to use bulk insert but have it ignore the columns that aren't declared in the create table statement?

回答1:

You can use a format file to do this:

http://msdn.microsoft.com/en-gb/library/ms178129.aspx

http://msdn.microsoft.com/en-gb/library/ms179250.aspx

Or if you want a slightly cheekier way, just import it all and drop a column afterwards. ;)

回答2:

The easiest way is to create a view that has just the columns you require.

Then bulk insert into that view.

回答3:

you cant ignore a field while doing bulk insert , insted of doing that .. Load all 4 column and drop the colum which you dont want

create table test (field1 varchar(50),field2 varchar(50), field3 varchar(50),field4 varchar(50))
go
bulk insert test
from 'c:\myFilePath'
with 
(fieldterminator=',',
rowterminator='\n'
)

ALTER TABLE test DROP column [field3]