Re^4: Query takes 895ms in TOAD but 42s in DBI

[perrin]

The bind_columns approach is the fastest. You can see benchmarks on some of this here.

[joec_]

Hi

When i try to implement the above code (bind_columns), i get a "DBD::Oracle::st bind_columns failed: Statement has no result columns to bind (perhaps you need to successfully call execute first) [for Statement "DECLARE dipp PacProject.dipp_project_cur; BEGIN pacproject.get_dipp_projects(:dipp); END;" with ParamValues: :dipp=DBI::st=HASH(0x945129c)]".

I am returning a cursor from my PLSQL. Is it possible to bind columns to a cursor?

TIA - Joe.

[kubrat]

The only time I have seen this error was wheh calling bind_columns() before the execute() method. I don't quite understand your SQL because I am more of a Postgres man myself. Perhaps, someone with Oracle expetience can give a better advice. In Postgres you first declare your cursor which doesn't return any results - it's just a $dbh->do call which either succeedes or fails:

DECLARE my_cursor AS SELECT * FROM foo ;

Then you execute another query to begin fetching results from the cursor, for example:

FETCH ALL FROM my_cursor;

And it's here where I will use bind_coulumns() and fetch(). So, basically, the sql has to return rows for the bind_columns() call to work. What I don't understand is how does your original code work if the sql doesn't return any rows? Or perhaps it does but not immediately.