Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Don't think this can be done with standard DBI. Every substitution gets quoted so if you use $var = join',', @ids; and execute with this $var, you'll get ... where id in ('1,2,3,4') and the query will obviously fail. Can't trick DBI by setting the { TYPE => SQL_INTEGER } attribute since it'll recognize it as a string and quote it anyway (and complain about the error).

As an alternative, DBIx-Simple has a "??" placeholder which is replaced with a list of as many question marks as values. Btw, I've only started looking at this module and haven't checked the speed in production.

So, for example, your code fragment might look like:

my @ids = (1,2,3,4); my $query = 'select * from a_table where id in (??)'; my $result = $dbh->query($q, @ids);
The prepare is taken care of internally and rows can be fetched in various ways.

In reply to Re: Can a DBI Placeholder accept multiple values? by igelkott
in thread Can a DBI Placeholder accept multiple values? by Errto

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 avoiding work at the Monastery: (4)
As of 2022-05-25 14:01 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Do you prefer to work remotely?



    Results (90 votes). Check out past polls.

    Notices?