SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 5)
    Identifier s
    Identifier arr
    Identifier a
    Identifier num
    Function arrayEnumerate (children 1)
     ExpressionList (children 1)
      Identifier arr
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier arrays_test
    TablesInSelectQueryElement (children 1)
     ArrayJoin (children 1)
      ExpressionList (children 2)
       Identifier arr (alias a)
       Function arrayEnumerate (alias num) (children 1)
        ExpressionList (children 1)
         Identifier arr
