RE: suppress quoting in prepared sql

From the DBI documentation (https://metacpan.org/pod/DBI#Placeholders-and-Bind-Values):

Also, placeholders can only represent single scalar values. For example, the following statement won't work as expected for more than one value:

"SELECT name, age FROM people WHERE name IN (?)"    # wrong
"SELECT name, age FROM people WHERE name IN (?,?)"  # two names

You may have to prepare the query each time unless you have a fixed number of elements in the IN clause.

HTH,
Mark Vaughan
Neustar, Inc. / Lead Consulting Services Consultant, Professional Services
8532 Concord Center Drive, Englewood, CO 80112, USA
Office: +1.303.802.1308  Fax: +1.303.802.1350  /  [email protected]


-----Original Message-----
From: Bruce Ferrell [mailto:[email protected]] 
Sent: Tuesday, April 05, 2016 10:24 AM
To: [email protected]
Subject: suppress quoting in prepared sql

I'm generating a sql statement like this:

sth  = $mysql_dbh->prepare(
"select sum(column) as columnSum from table where value in ( ? ) and row_date between cast( ? as date) and cast( ? as date) ");

sth->execute( $ValueIDs ,$week_start_date,$week_end_date);

$ValueIDs is a series of unquoted values:

01161,01162,01262,01147,01034,01125,01125,01017,01125,01278,01204,01164

When observed at the mysql server, the sql appears as follows:

select sum(column) as columnSum where value in ( '01161,01162,01262,01147,01034,01125,01125,01017,01125,01278,01204,01164' ) and row_date between cast( '2016-03-29' as date) and cast( '2016-04-05' as date)

resulting in no data being returned.

When the sql is manually entered as follows:

select sum(column) as columnSum where value in ( 01161,01162,01262,01147,01034,01125,01125,01017,01125,01278,01204,01164 ) and row_date between cast( '2016-03-29' as date) and cast( '2016-04-05' as date)

The correct values are returned.

How can I suppress the quoting for the IN clause?