List all the contact channel codes that were used less than 5 times.
CREATE TABLE customer_contact_channels (channel_code VARCHAR, customer_id VARCHAR)
SELECT channel_code FROM customer_contact_channels GROUP BY channel_code HAVING COUNT(customer_id) < 5
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE customer_contact_channels (channel_code VARCHAR, customer_id VARCHAR) Question: List all the contact channel codes that were used less than 5 times. [/INST] SELECT channel_code FROM customer_contact_channels GROUP BY channel_code HAVING COUNT(customer_id) < 5 </s>