| CC: | ilmari [...] ilmari.org |
| Subject: | literal string '0' is replaced by '' |
| Date: | Thu, 5 Jul 2018 08:05:05 +0200 |
| To: | bug-SQL-Abstract [...] rt.cpan.org |
| From: | Fabrizio Gennari <fabrizio.ge [...] tiscali.it> |
In Perl, the literal string '0' is false.
Because of this, if one uses the scalar ref "0", SQL::Abstract considers
it a 'false' string and replaces it with an empty string.
The tests below were made with version 1.85
perl -MSQL::Abstract -e 'my
($sql,@bind)=SQL::Abstract->new->where(\"1");CORE::say $sql'
Value of $sql is
WHERE ( 1 )
as expected
perl -MSQL::Abstract -e 'my
($sql,@bind)=SQL::Abstract->new->where(\"0");CORE::say $sql'
Expected value of $sql is
WHERE ( 0 )
Actual is an empty string
perl -MSQL::Abstract -e 'my
($sql,@bind)=SQL::Abstract->new->where({-bool=>\"1"});CORE::say $sql'
Value of $sql is
WHERE ( 1 )
as expected
perl -MSQL::Abstract -e 'my
($sql,@bind)=SQL::Abstract->new->where({-bool=>\"0"});CORE::say $sql'
Expected value of $sql is
WHERE ( 0 )
Actual is an empty string
Strangely it works if the hash ref has other keys as well
perl -MSQL::Abstract -e 'my
($sql,@bind)=SQL::Abstract->new->where({-bool=>\"0",a=>3});CORE::say $sql'
Value of $sql is
WHERE ( ( 0 AND a = ? ) )
and value of @bind is (3), as expected
https://github.com/dbsrgits/sql-abstract/pull/14 is meant to fix this