What is the production code for the episode written by Drew Z. Greenberg?
CREATE TABLE table_158088_2 (production_code VARCHAR, written_by VARCHAR)
SELECT production_code FROM table_158088_2 WHERE written_by = "Drew Z. Greenberg"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_158088_2 (production_code VARCHAR, written_by VARCHAR) Question: What is the production code for the episode written by Drew Z. Greenberg? [/INST] SELECT production_code FROM table_158088_2 WHERE written_by = "Drew Z. Greenberg" </s>