diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/plpython.sgml | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/doc/src/sgml/plpython.sgml b/doc/src/sgml/plpython.sgml index a39438836fd..cc5c7efbe00 100644 --- a/doc/src/sgml/plpython.sgml +++ b/doc/src/sgml/plpython.sgml @@ -903,6 +903,8 @@ rv = plpy.execute("SELECT * FROM my_table", 5) <programlisting> foo = rv[i]["my_column"] </programlisting> + The number of rows returned can be obtained using the built-in + <function>len</function> function. </para> <para> @@ -912,7 +914,10 @@ foo = rv[i]["my_column"] <term><literal><function>nrows</function>()</literal></term> <listitem> <para> - Returns the number of rows returned or processed by the query. + Returns the number of rows processed by the command. Note that this + is not necessarily the same as the number of rows returned. For + example, an <command>UPDATE</command> command will set this value but + won't return any rows (unless <literal>RETURNING</literal> is used). </para> </listitem> </varlistentry> |