What is the enrollment of STM which has been in competition since 1990?
CREATE TABLE table_11318462_29 (enrolment VARCHAR, in_competition_since VARCHAR, abbreviation VARCHAR)
SELECT COUNT(enrolment) FROM table_11318462_29 WHERE in_competition_since = 1990 AND abbreviation = "STM"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_11318462_29 (enrolment VARCHAR, in_competition_since VARCHAR, abbreviation VARCHAR) Question: What is the enrollment of STM which has been in competition since 1990? [/INST] SELECT COUNT(enrolment) FROM table_11318462_29 WHERE in_competition_since = 1990 AND abbreviation = "STM" </s>