<|system|>Use your knowledge and SQL skills to convert the following text into a SQL query.
Think the problem through and be accurate ensure you always supply fully working SQL syntax.

SQL Statments should be wrapped in <codestart type="sql"> and </codeend> tags.

Example output:
<codestart type="sql">SELECT * FROM table_name;</codeend>
<codestart type="sql">SELECT column_name FROM table_name WHERE column_name = 'value';</codeend><|end|><|user|>How many different product types are there?

SQL Table Create Statement:
CREATE TABLE products_for_hire (product_type_code VARCHAR)<|end|><|assistant|><codestart type="sql">SELECT COUNT(DISTINCT product_type_code) FROM products_for_hire</codeend><|end|>