Question

I’m writing some db utility scripts, and one of the tasks I need to do is rebuild the data only, but leave the schema intact. What is the easiest way to automate this from the command-line using bash and the mysql tools (no php, etc)?

Update: I’d like the solution to handle all tables in one command, and if possible, not need to be updated if tables are added or removed.

Answer 1

TRUNCATE tableName; 

This will empty the contents of the table.

Edit in response to the Q edit: It seems from my quick test that you will have to do at least 2 queries as it seems that ‘show tables’ cannot be used as a sub query, I don’t know how to do this in bash so here is a PHP example, hopefully it will help.

<?php       mysql_connect('localhost', 'user', 'password'); $dbName = 'database'; mysql_select_db($dbName); /*added semi-colon*/ $result_t = mysql_query('SHOW TABLES'); while($row = mysql_fetch_assoc($result_t)) {    mysql_query('TRUNCATE ' . $row['Tables_in_' . $dbName]); } ?> 

At a minimum this needs some error handling.