How many times did outgoing manager Bart de Roover vacated a position?
CREATE TABLE table_27374004_4 (date_of_vacancy VARCHAR, outgoing_manager VARCHAR)
SELECT COUNT(date_of_vacancy) FROM table_27374004_4 WHERE outgoing_manager = "Bart De Roover"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_27374004_4 (date_of_vacancy VARCHAR, outgoing_manager VARCHAR) Question: How many times did outgoing manager Bart de Roover vacated a position? [/INST] SELECT COUNT(date_of_vacancy) FROM table_27374004_4 WHERE outgoing_manager = "Bart De Roover" </s>