Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
O wise brothers,
I have came across a couple of problems using Ado with Perl under Win32 connecting to a Ms SqlServer 7.0 database. I have no problems when executing a single Sql query but in a case I have to compute variables in the same query being sento to the database engine, like
declare @VAR int; set @VAR = (select max(id) from table); select * from table2 where id = @VAR
If I do this, the resulting recordset object shows strange behaviours, like
  • it does not test positive as empty (i.e. when both $rs->Bof and $rs->Eof true) so that my code tries to loop on it; nevertheless, the loop is infinite because $rs->Eof is never true even if $rs->MoveNext reports no errors and gets executed some thousand times before the Ctrl-C
  • I read somewhere that it is possible to access the different outcomes from each Sql statement separately but I do not know how to do it (in fact I'd like to access only the result from the third statement, as the first two are not supposed to return anything, and I wonder if that's the problem with the point above)
  • I casually noticed that loading the Data::Dumper module seems to break the ability for the Ado connection to open a recordset (it just freezes)
Of course the query I'm using is by far more complex than the one I'm reporting here so replacing variables with subqueries is not a viable option.

Anybody got an idea on how to overcome this result? I cannot use DBI because it would mean a major rewrite of existing code. Thank you.


In reply to Problem with database under Win32 by l3nz

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (3)
As of 2022-01-17 04:10 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In 2022, my preferred method to securely store passwords is:












    Results (51 votes). Check out past polls.

    Notices?