How many point categories are there for the 3 mile run? 
CREATE TABLE table_19534874_2 (points VARCHAR, mile_run VARCHAR)
SELECT COUNT(points) FROM table_19534874_2 WHERE mile_run = 3
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_19534874_2 (points VARCHAR, mile_run VARCHAR) Question: How many point categories are there for the 3 mile run?  [/INST] SELECT COUNT(points) FROM table_19534874_2 WHERE mile_run = 3 </s>