Pass parameters to MySQL script

Question

I have a MySQL script file named query1.sql which contains:

select * FROM $(tblName) LIMIT 10;

I am in MySQL console, how do I

Answer 1

You can use user variables to achieve the behaviour you describe. As you use the variable as a schema identifier, not a data value, you'll have to use a prepared statement so you can compose the query dynamically.

query1.sql:

SET @query = CONCAT('Select * FROM ', @tblName, ' LIMIT 10');
PREPARE stmt FROM @query;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

Invoked as

mysql> SET @tblName = 'Users'; \. query1.sql