title: big query command line to execute multiple sql files
body: <p>Does anyone here knows how to execute multiple sql files in bq command line? Sample if I have 2 sql files named test1.sql and test2.sql, how should I do it?</p>
  
  <p>If I do this:</p>
  
  <p>bq query --use_legacy_sql=false > test1.sql</p>
  
  <p>this only executes the test1.sql.</p>
  
  <p>What I want to do is to execute both test1.sql and tes2.sql.</p>