diff options
Diffstat (limited to 'doc/src/sgml/spgist.sgml')
| -rw-r--r-- | doc/src/sgml/spgist.sgml | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/src/sgml/spgist.sgml b/doc/src/sgml/spgist.sgml index 03f914735bd..ad8d348a43d 100644 --- a/doc/src/sgml/spgist.sgml +++ b/doc/src/sgml/spgist.sgml @@ -284,7 +284,7 @@ <para> There are five user-defined methods that an index operator class for - <acronym>SP-GiST</acronym> must provide, and one is optional. All five + <acronym>SP-GiST</acronym> must provide, and two are optional. All five mandatory methods follow the convention of accepting two <type>internal</type> arguments, the first of which is a pointer to a C struct containing input values for the support method, while the second argument is a pointer to a @@ -295,7 +295,9 @@ cases, the output struct is initialized to zeroes before calling the user-defined method. The optional sixth method <function>compress</function> accepts datum to be indexed as the only argument and returns a value suitable - for physical storage in a leaf tuple. + for physical storage in a leaf tuple. The optional seventh method + <function>options</function> accepts internal pointer to a C struct, where + opclass-specific parameters should be placed, and returns <type>void</type>. </para> <para> |