Question on using LOAD DATA LOCAL INFILE REPLACE statement

if I have 100 fields in a table, and I do a LOAD DATA LOCAL INFILE REPLACE command to a MySQL db with a .csv file that only has 50 of those fields in it, will it just update the fields that are in the .csv file and leave the others alone or will it replace those entire rows, thus making the fields that are NOT in the .csv file become the default for those fields?
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_agx_Connect With a Mentor Commented:
Yes, REPLACE means it mysql will replace the entire row.  Any columns NOT in the CSV file will have their values reset to the default.

CSV Data

Data (Before)

1, 'AA', 10, '2013-12-31 00:00:00'
2, 'BB', 20, '2013-12-31 00:00:00'
3, 'CC', 30, '2013-12-31 00:00:00'

Data (After)
1, 'Foo', 0, ''
2, 'BB', 20, '2013-12-31 00:00:00'
3, 'Bar', 0, ''

* Column 3 has a DEFAULT of 0
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