How many series were directed by Rob Renzetti?
CREATE TABLE table_18734298_1 (no_in_series VARCHAR, directed_by VARCHAR)
SELECT COUNT(no_in_series) FROM table_18734298_1 WHERE directed_by = "Rob Renzetti"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_18734298_1 (no_in_series VARCHAR, directed_by VARCHAR) Question: How many series were directed by Rob Renzetti? [/INST] SELECT COUNT(no_in_series) FROM table_18734298_1 WHERE directed_by = "Rob Renzetti" </s>