What is the sum of low estimate(s) that is listed for the date of 1978?
CREATE TABLE table_name_66 (low_estimate INTEGER, date VARCHAR)
SELECT SUM(low_estimate) FROM table_name_66 WHERE date = "1978"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_66 (low_estimate INTEGER, date VARCHAR) Question: What is the sum of low estimate(s) that is listed for the date of 1978? [/INST] SELECT SUM(low_estimate) FROM table_name_66 WHERE date = "1978" </s>