multiple statements found while compiling a single statement

This error message typically occurs when you try to execute multiple SQL statements in a single query. Most database management systems don't allow executing more than one SQL statement in a single query.

To fix this error, you need to separate your SQL statements into individual queries or use a stored procedure. If you're working with a programming language or application that sends SQL queries to the database, make sure that you're not sending more than one SQL statement at a time.

For example, instead of writing:

SELECT * FROM customers; 
SELECT * FROM orders;

You should write:

SELECT * FROM customers;

SELECT * FROM orders;

Alternatively, you can use a stored procedure to execute multiple SQL statements. Stored procedures are precompiled SQL statements that can be executed as a single transaction.

Overall, make sure that you're following the syntax and guidelines of the database management system you're using to avoid errors like this.