What is the highest value for col(m) at North Island?
CREATE TABLE table_18946749_4 (col__m_ INTEGER, island VARCHAR)
SELECT MAX(col__m_) FROM table_18946749_4 WHERE island = "North island"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_18946749_4 (col__m_ INTEGER, island VARCHAR) Question: What is the highest value for col(m) at North Island? [/INST] SELECT MAX(col__m_) FROM table_18946749_4 WHERE island = "North island" </s>