SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   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 \'actions = 1\'
               Subquery (children 1)
                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 equals (children 1)
                    ExpressionList (children 2)
                     Function plus (children 1)
                      ExpressionList (children 2)
                       Identifier d
                       Literal UInt64_1
                     Literal UInt64_2
                   ExpressionList (children 2)
                    OrderByElement (children 1)
                     Function multiply (children 1)
                      ExpressionList (children 2)
                       Function plus (children 1)
                        ExpressionList (children 2)
                         Identifier d
                         Literal UInt64_1
                       Literal UInt64_4
                    OrderByElement (children 1)
                     Function multiply (children 1)
                      ExpressionList (children 2)
                       Function plus (children 1)
                        ExpressionList (children 2)
                         Identifier a
                         Identifier b
                       Identifier c
   Function ilike (children 1)
    ExpressionList (children 2)
     Identifier explain
     Literal \'%sort description%\'
