What is the sum of complement commander Valkenburg received?
CREATE TABLE table_name_28 (complement VARCHAR, commander VARCHAR)
SELECT COUNT(complement) FROM table_name_28 WHERE commander = "valkenburg"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_28 (complement VARCHAR, commander VARCHAR) Question: What is the sum of complement commander Valkenburg received? [/INST] SELECT COUNT(complement) FROM table_name_28 WHERE commander = "valkenburg" </s>