A couple ways I've implemented the actual text to make it a little cleaner. All very subjective. Qualified by I nearly always format my statements with a here-doc: 
my $sql = <<EOSQL;

SELECT  something 
FROM    atable 
WHERE   data IN (?)

EOSQL

[download]
  1. Using baby cart 
    my $sql = <<EOSQL;

SELECT  something 
FROM    atable 
WHERE   data IN (@{[join ',', ('?') x $size]})

EOSQL

    [download]
  2. Using $" 
    my $sql = do {
    my @holders = ('?') x $size;
    local $" = ',';
    <<EOSQL;

SELECT  something 
FROM    atable 
WHERE   data IN (@holders)

EOSQL
};

    [download]
  3. Using sprintf 
    my $sql = sprintf <<EOSQL, join ',', ('?') x $size;

SELECT  something 
FROM    atable 
WHERE   data IN (%s)

EOSQL

    [download]

I've generally been using #2 recently.

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re^2: DBI parameterized database query with comma seperated list by kennethk
in thread DBI parameterized database query with comma seperated list by mg9176

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