SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function extractGroups (children 1)
     ExpressionList (children 2)
      Literal \'abc=111, def=222, ghi=333 "jkl mno"="444 foo bar"\'
      Literal \'("[^"]+"|\\\\w+)=("[^"]+"|\\\\w+)\'