index daefc583f3b43a6378b80056824191ff4ba3eac8..f1798acc71b1ab760da8ec14798605508a817b6d 100644 (file)
If an SQL null value<indexterm><primary>null value</primary><secondary
sortas="PL/Python">PL/Python</secondary></indexterm> is passed to a
function, the argument value will appear as <symbol>None</symbol> in
- Python. The above function definition will return the wrong answer for null
+ Python. For example, the function definition of <function>pymax</function>
+ shown in <xref linkend="plpython-funcs"> will return the wrong answer for null
inputs. We could add <literal>STRICT</literal> to the function definition
to make <productname>PostgreSQL</productname> do something more reasonable:
if a null value is passed, the function will not be called at all,