SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab
   Function indexHint (children 1)
    ExpressionList (children 1)
     Function indexHint (children 1)
      ExpressionList (children 2)
       Literal Int64_-1
       Literal Float64_0
   Function has (children 1)
    ExpressionList (children 2)
     Identifier foo
     Literal \'b\'
