diff options
| -rw-r--r-- | doc/src/sgml/bloom.sgml | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/doc/src/sgml/bloom.sgml b/doc/src/sgml/bloom.sgml index f857b09bd6b..8e535698df7 100644 --- a/doc/src/sgml/bloom.sgml +++ b/doc/src/sgml/bloom.sgml @@ -51,8 +51,9 @@ <term><literal>length</literal></term> <listitem> <para> - Length of each signature (index entry) in bits. The default - is <literal>80</literal> bits and maximum is <literal>4096</literal>. + Length of each signature (index entry) in bits, it is rounded up to the + nearest multiple of <literal>16</literal>. The default is + <literal>80</literal> bits and maximum is <literal>4096</literal>. </para> </listitem> </varlistentry> @@ -242,6 +243,20 @@ DEFAULT FOR TYPE text USING bloom AS operations in the future. </para> </listitem> + + <listitem> + <para> + <literal>bloom</literal> access method doesn't support + <literal>UNIQUE</literal> indexes. + </para> + </listitem> + + <listitem> + <para> + <literal>bloom</literal> access method doesn't support searching for + <literal>NULL</literal> values. + </para> + </listitem> </itemizedlist> </para> </sect2> |