change $sth->execute(1, 10); to $sth->execute();

Please don't. Placeholders prevent SQL injections and allow caching of prepared statements, so:

  1. Change the value "E" in $sql to a single, unquoted ?
  2. Change the execute parameters to ("E")

More information: DBI, Bobby Tables, Re: Counting rows Sqlite, Re^2: Massive Memory Leak, Re^5: Variable interpolation in a file to be read in.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^2: execute failed: called with 2 bind variables when 0 are needed by afoken
in thread execute failed: called with 2 bind variables when 0 are needed by perloz

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