What are Unit 2's dates of commissioning?
CREATE TABLE table_28672269_1 (date_of_commissioning VARCHAR, unit_number VARCHAR)
SELECT COUNT(date_of_commissioning) FROM table_28672269_1 WHERE unit_number = 2
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28672269_1 (date_of_commissioning VARCHAR, unit_number VARCHAR) Question: What are Unit 2's dates of commissioning? [/INST] SELECT COUNT(date_of_commissioning) FROM table_28672269_1 WHERE unit_number = 2 </s>