Ora:view support for long columns

Question

Hi, i'm making a documentation tool of my database tables.
I want to generate XML description of tables with Xquery.
When i use this Xquery, gives me error,
ORA-00932: tipos de dato inconsistentes: se esperaba NUMBER se ha obtenido LONG
SELECT XMLQuery(
'for $i in ora:view( "SYS", "ALL_TABLES")/ROW
return <table id="{$i/TABLE_NAME}">
{for $j in ora:view("SYS","ALL_TAB_COLUMNS")/ROW
                 where $j/TABLE_NAME eq $i/TABLE_NAME
                 return ($j/COLUMN_NAME)}
</table>'
RETURNING CONTENT) FROM DUAL;
The view ALL_TAB_COLUMNS have a LONG column for DEFAULT value.
Does ora:view have a workaround for LONG columns?
The only solution that i have found is to create a new view, without the LONG column, but that will make my documentation tool less portable.
Thanks.

Answer 1

Hi,
user625976 wrote:
The only solution that i have found is to create a new view, without the LONG columnThat's the only workaround I can imagine too.
But, what about using SQL/XML functions?
For example :
SELECT xmlelement("tables",
  xmlagg(
    xmlelement("table",
      xmlattributes(c.table_name as "id", c.owner as "owner"),
      xmlagg(
        xmlelement("column_name", c.column_name)
        order by c.column_id
    ) order by c.table_name
FROM all_tab_columns c
GROUP BY c.owner, c.table_name;