The SQL SELECT statement is made up of several clauses: 1  SELECT: specifies which columns in database tables to include in the result or result set.  FROM: specifies the tables that you want to query data from. You can also use the FROM clause to join multiple tables.
According to the ACS (American Community Survey) from the US Census Bureau, in 2014 (most recent year available), about 38 million Americans (12% of the population) living in about 20 million households did not have health insurance.
But even if the exclusions and prohibitive premiums caused by pre-existing conditions are not a universal problem in the individual insurance market, they clearly affect many Americans. Estimates range from 2 to 4 million, out of a total population of about 260 million people under the age of 65.