Conditional statement on MySQL

Question

I want to do something like

IF (EXISTS (select * from Table1 where <Condition>))
{
    INSERT INTO Table2 ...
}
ELSE
{
    INSERT INTO Table3...
    <Do some more manipulations>
}

AFAIK I can only use the IF as part of a statement.

Is there a way to do it?

Thanks,

==Edit 1==
I would like to do this logic as part of a Stored Procedure.

Answer 1

Try this:

IF EXISTS (SELECT * FROM Table1 WHERE <CONDITION>) THEN 
BEGIN
    INSERT INTO Table2 ...
END
ELSE
BEGIN
    INSERT INTO Table3...
    <DO SOME more manipulations>
END
END IF

Check IF Statement in MySQL

Answer 2

The only way is by calling a stored procedure.

Using stored procedure, you can define variables, check multiple conditions, execute multiple statements, etc.
But, just with IFEXISTS and ELSE at max you can execute 2 statements in straight.

References: MySQL: CREATE PROCEDURE Syntax