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_14889988_1 ( production_code INTEGER, no_in_series VARCHAR )

### Question ###
What is the production code for episode 229?

### Accurate SQL ###

SELECT MAX(production_code) FROM table_14889988_1 WHERE no_in_series = 229