SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 5)
    Identifier table
    Identifier name
    Identifier type
    Identifier default_kind
    Identifier default_expression
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.columns
   Function and (children 1)
    ExpressionList (children 2)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier database
       Literal \'test\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier table
       Literal \'hits\'