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Re: How can we interpolate an expression??

by ww (Bishop)
on Sep 20, 2012 at 18:51 UTC ( #994730=note: print w/replies, xml ) Need Help??


in reply to How can we interpolate an expression??

... as a one-liner; nothing else here is new, other than escaping the variables to avoid interpolation.

C:\>perl -E "my $num1=3; my $num2=4; say \"The result of \$num1 * \$nu +m2 is: \" . $num1*$num2;" The result of $num1 * $num2 is: 12

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[atcroft]: abner: Do you mean something like SELECT `foo`, `bar` FROM `table_name' WHERE (( `foo` = "asdf" ) OR ( `bar` = 'asdw' )); Or something else?
[abner]: yes. i am familiar with mysql but ignorant about how to get around the fact that placeholders can only represent single scalar values.
[abner]: my $sth = $dbh->prepare(' SELECT * FROM charge WHERE cpt = ?') or die "Couldn't prepare statement: " . $dbh->errstr;
[abner]: what if i want SELECT * FROM charge WHERE col1 = x and col2 = y?
[atcroft]: abner: So you are wanting to do something like my $sth = $dbh->prepare(' SELECT * FROM charge WHERE col1 = ? and col2 = ?;'); $sth->execute(' asdf', 'asdw');?
[atcroft]: (Full disclosure: I may have the idea right but small typographical errors, so please test any code I suggest. :) )

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