Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_87 ( a_side VARCHAR, catalog_number VARCHAR )

### Question ###
What is the A-side for catalog 902?

### Accurate SQL ###

SELECT a_side FROM table_name_87 WHERE catalog_number = "902"