Showing posts with label SQL. Show all posts
Showing posts with label SQL. Show all posts

Tuesday, June 3, 2008

SQL command to dump data into file and load data from file

In order to migrate data, it is useful to dump data from database table to a file, and load data from file to a table.

To dump data for a specific range in a file, you can use the following SQL command:

SELECT $fields INTO OUTFILE '$dump_file_name' FIELDS TERMINATED BY "\t"
ENCLOSED BY '"' ESCAPED BY "\\" LINES TERMINATED BY '\n' FROM $table_name WHERE
id >= $start AND id < $end;

You can then load the file by using the following SQL command:

LOAD DATA INFILE '$dump_file_name' INTO TABLE $table_name FIELDS TERMINATED BY "\t"
ENCLOSED BY '"' ESCAPED BY "\\" LINES TERMINATED BY '\n' ($fields);


These two commands work fine with MySQL.