Re: libpq, PQdescribePrepared -> PQftype, PQfmod, no PQnullable

,--- You/anarazel@anarazel.de (Fri, 07 Oct 2011 02:54:39 +0200) ----*
|
| >  Given a SELECT (or possibly, simpler, a table name), tell me which
| >  columns are non-nullable?
| That doesnt explain why it's  needed.

It's  needed for some meta analysis. That's as much as I can say.

| To get community buyin into a feature the community - or at least
| parts of it - need to understand why its needed.

Take a look at these APIs:
 http://download.oracle.com/javase/6/docs/api/java/sql/ResultSetMetaData.html#isNullable(int)    int isNullable(int
column)throws SQLException   Indicates the nullability of values in the designated column.
 
 http://msdn.microsoft.com/en-us/library/ms716289(v=VS.85).aspx    NullablePtr [Output] Pointer to a buffer in which to
returna   value that indicates whether the column allows NULL values.
 

A common and natural question to be answered about result sets.

-- Alex -- alex-goncharov@comcast.net --