What was the number of episodes whose production code is 7ABB21?
CREATE TABLE table_28196105_1 (_number VARCHAR, production_code VARCHAR)
SELECT COUNT(_number) FROM table_28196105_1 WHERE production_code = "7ABB21"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28196105_1 (_number VARCHAR, production_code VARCHAR) Question: What was the number of episodes whose production code is 7ABB21? [/INST] SELECT COUNT(_number) FROM table_28196105_1 WHERE production_code = "7ABB21" </s>