SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 2)
          ExpressionList (children 1)
           Asterisk
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             Function viewExplain (children 1)
              ExpressionList (children 3)
               Literal \'EXPLAIN\'
               Literal \'\'
               Subquery (children 1)
                SelectWithUnionQuery (children 1)
                 ExpressionList (children 1)
                  SelectQuery (children 2)
                   ExpressionList (children 1)
                    Identifier x
                   TablesInSelectQuery (children 1)
                    TablesInSelectQueryElement (children 1)
                     TableExpression (children 1)
                      Subquery (children 1)
                       SelectWithUnionQuery (children 1)
                        ExpressionList (children 1)
                         SelectQuery (children 2)
                          ExpressionList (children 1)
                           Function materialize (alias x) (children 1)
                            ExpressionList (children 1)
                             Identifier x
                          TablesInSelectQuery (children 1)
                           TablesInSelectQueryElement (children 1)
                            TableExpression (children 1)
                             Subquery (children 1)
                              SelectWithUnionQuery (children 1)
                               ExpressionList (children 1)
                                SelectQuery (children 2)
                                 ExpressionList (children 1)
                                  Identifier x
                                 TablesInSelectQuery (children 1)
                                  TablesInSelectQueryElement (children 1)
                                   TableExpression (children 1)
                                    TableIdentifier tab
   Function ilike (children 1)
    ExpressionList (children 2)
     Identifier explain
     Literal \'%distinct%\'
