In some situations the posibility to use a nested multiline comments would be usefull.
Those cases include:
* examining several variants of a subquery by commentig out the alternatives
* adding the execution plan to the SQL script as a comment
* generating the SQL query and adding the parameters as comment
All those cases can lead to a nested comment such as
/*
This is the query
select /*+ parallel(2) */ from dual
*/
Currenly the nested comment end must be "escaped" such as bellow to get a valid syntax:
/*
This is the query
select /*+ parallel(2) *_/ from dual
*/
The idea is to use similar mechanism as for the Q delimited strings to allow the nested commens without escaping
For example
/*q'{ comment may contain the end of comment sequence */ }'*/
or
/*{ comment may contain the end of comment sequence */ }*/