The code below demonstates use of a placeholder for a field name (lastname) and this works. ... 
my $stmt = "SELECT * FROM users WHERE $searchfield = ? ORDER BY ? ASC"
+;
warn("statement =  '$stmt'");

[download]
[Mon Mar 19 19:01:04 2018] update_tables.cgi: statement =  'SELECT * F
+ROM users WHERE lastname = ? ORDER BY ? ASC' at update_tables.cgi lin
+e 462.

[download]

No. It does not use a placeholder for lastname. It interpolates $searchfield directly into the query. It uses a placeholder for the column value, but that is different from the column name.

In reply to Re^9: CGI Action call by Corion
in thread CGI Action call by tultalk

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