What is the per-capita GDP for the country with an overall GDP of 156.640?
CREATE TABLE table_name_90 (gdp_per_capita__us$_ VARCHAR, gdp__billion_us$_ VARCHAR)
SELECT gdp_per_capita__us$_ FROM table_name_90 WHERE gdp__billion_us$_ = "156.640"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_90 (gdp_per_capita__us$_ VARCHAR, gdp__billion_us$_ VARCHAR) Question: What is the per-capita GDP for the country with an overall GDP of 156.640? [/INST] SELECT gdp_per_capita__us$_ FROM table_name_90 WHERE gdp__billion_us$_ = "156.640" </s>