Databases Reference
In-Depth Information
can also specify manually what characters terminate the lines. The usual choice is
\n
for UNIX-based systems,
\r\n
for DOS or Windows systems, and
\r
for Mac-based
system. If in doubt, we can use a hexadecimal file editor on our client computer (not
part of phpMyAdmin) to examine the exact codes.
By default, phpMyAdmin expects a CSV
file with the same number of fields and
the same field order as the target table, but this can be changed by entering a
comma-separated list of column names in
Column names
, respecting the source
file format. For example, let's say our source file only contains the author ID and
author name information:
"1","John Smith"
"2","Maria Sunshine"
We'd have to put
author_id
,
author_name
in
Column names
to match the source file.
When we click
Go
, the import is executed and we get a confirmation. We might also
see the actual
INSERT
queries generated if the total size of the file is not too big.
CSV Using LOAD DATA
With this method, phpMyAdmin relies on the server's
LOAD
DATA
INFILE
or
LOAD
DATA
LOCAL
INFILE
mechanisms to do the actual import, instead of processing the
data internally. These statements are the fastest way for importing text in MySQL.
They cause MySQL to start a read operation from a file located on the MySQL server
(
LOAD
DATA
INFILE
) or from another place (
LOAD
DATA
LOCAL
INFILE
), which in this
context, is always the web server's file system. If the MySQL server is located on
a computer other than the web server, we won't be able to use the
LOAD
DATA
INFILE
mechanism.
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