+=item str2time_sql_closing [ DRIVER_NAME ]
+
+Returns the closing suffix of a function to convert to unix time based on
+database type, such as ")::integer" for Pg or ")" for mysql.
+
+You can pass an optional driver name such as "Pg", "mysql" or
+$dbh->{Driver}->{Name} to return a function for that database instead of
+the current database.
+
+=cut
+
+sub str2time_sql_closing {
+ my $driver = shift || driver_name;
+
+ return ' )::INTEGER ' if $driver =~ /^Pg/i;
+ return ' ) ';
+}
+