Re^2: DBD::Pg - $sth->execute($csv

Just to (maybe, hopefully) clarify: if $columns contains an array ref with your 22 column names and $values the 22 corresponding values you need to call $sth->execute( @{$columns}, @{$values} ) because it expects to get a flat list of parameters (not references to arrays with them). You're giving it the first below; it wants the second:

$sth->execute( [ "col1", "col2", ... ], [ "val1", "val2", ... ] );  ##
+ not working
$sth->execute( "col1", "col2", ..., "col22", "val1", "val2", ... ); ##
+ what it expects
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The cake is a lie.
The cake is a lie.
The cake is a lie.

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Re^3: DBD::Pg - $sth->execute($csv_var) ERROR by perlygapes (Beadle) on Mar 13, 2020 at 00:54 UTC
Oh the cake....yes, I know it's a lie, but it is just so tasty! :`( Yes, $columns and $values are strings containing comma separated column names and column values I wish to insert into Pg. I tried these, none of them work: `$sth->execute(@{$columns},@{$values}); $sth->execute(@columns,@values); $sth->execute(\@columns,\@values);` [download] I thought $sth->execute($columns,$values); would be closer to passing the flat comma separated string Pg needs. What is just not clear in the DBD::Pg cpan documentation is how many arguments $sth->execute(); expects or can take, and I can't see a really clear/obvious example of where a variable is used. Most instances just show a hard-coded value...not very helpful.	[reply] [d/l]
Re^4: DBD::Pg - $sth->execute($csv_var) ERROR by soonix (Chancellor) on Mar 13, 2020 at 08:01 UTC
You are on the right track with Re^2: DBD::Pg - $sth->execute($csv_var) ERROR, but to understand why this doesn't work I thought $sth->execute($columns,$values); would be closer to passing the flat comma separated string Pg needs. you need to be aware of the difference between a string containing comma separated list of values (in Perl: a scalar) a list of values (in Perl: a list or an array) So, even DBI could use "placeholded" column names, you'd have to `execute ( split(/,\s/,$columns), split(/,\s/, $values))`	[reply] [d/l]