For episode number 7, what was the numbers of original air dates?
CREATE TABLE table_19266557_1 (original_air_date VARCHAR, _number VARCHAR)
SELECT COUNT(original_air_date) FROM table_19266557_1 WHERE _number = 7
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_19266557_1 (original_air_date VARCHAR, _number VARCHAR) Question: For episode number 7, what was the numbers of original air dates? [/INST] SELECT COUNT(original_air_date) FROM table_19266557_1 WHERE _number = 7 </s>