How do I declare two variables in MySQL?

How do I declare multiple variables in MySQL?

DECLARE var1 int; DECLARE var2 int; DECLARE var3 int; SELECT var1:=id, var2:=foo, var3:=bar from page WHERE name="bob"; CALL someAwesomeSP (var1 , var2 , var3 );

Can you declare multiple variables?

You can declare multiple variables in a single line. However, there are more efficient ways to define numerous variables in JavaScript. First, define the variables' names and values separated by commas using just one variable keyword from var , let or const.

How do I declare a selected variable in MySQL query?

The syntax for assigning a value to a SQL variable within a SELECT query is @ var_name := value , where var_name is the variable name and value is a value that you're retrieving. The variable may be used in subsequent queries wherever an expression is allowed, such as in a WHERE clause or in an INSERT statement.

How do I SET system variables in MySQL?

System variables can be set at server startup using options on the command line or in an option file. Most of them can be changed dynamically while the server is running by means of the SET statement, which enables you to modify operation of the server without having to stop and restart it.