When the network mask is 255.255.255.252 what is the prefix size?
CREATE TABLE table_149426_4 (prefix_size VARCHAR, network_mask VARCHAR)
SELECT prefix_size FROM table_149426_4 WHERE network_mask = "255.255.255.252"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_149426_4 (prefix_size VARCHAR, network_mask VARCHAR) Question: When the network mask is 255.255.255.252 what is the prefix size? [/INST] SELECT prefix_size FROM table_149426_4 WHERE network_mask = "255.255.255.252" </s>