diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/pageinspect.sgml | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/doc/src/sgml/pageinspect.sgml b/doc/src/sgml/pageinspect.sgml index 0cad08a8a7e..a0be779940d 100644 --- a/doc/src/sgml/pageinspect.sgml +++ b/doc/src/sgml/pageinspect.sgml @@ -685,9 +685,9 @@ test=# SELECT first_tid, nbytes, tids[0:5] AS some_tids <listitem> <para> - <function>gist_page_opaque_info</function> returns information about - a <acronym>GiST</acronym> index opaque area, like the NSN, rightlink and - page type. + <function>gist_page_opaque_info</function> returns information from + a <acronym>GiST</acronym> index page's opaque area, such as the NSN, + rightlink and page type. For example: <screen> test=# SELECT * FROM gist_page_opaque_info(get_raw_page('test_gist_idx', 2)); @@ -702,7 +702,7 @@ test=# SELECT * FROM gist_page_opaque_info(get_raw_page('test_gist_idx', 2)); <varlistentry> <term> - <function>gist_page_items(page bytea, index oid) returns setof record</function> + <function>gist_page_items(page bytea, index_oid regclass) returns setof record</function> <indexterm> <primary>gist_page_items</primary> </indexterm> @@ -711,7 +711,7 @@ test=# SELECT * FROM gist_page_opaque_info(get_raw_page('test_gist_idx', 2)); <listitem> <para> <function>gist_page_items</function> returns information about - the data stored in a page of <acronym>GiST</acronym> index. For example: + the data stored in a page of a <acronym>GiST</acronym> index. For example: <screen> test=# SELECT * FROM gist_page_items(get_raw_page('test_gist_idx', 0), 'test_gist_idx'); itemoffset | ctid | itemlen | keys @@ -739,19 +739,21 @@ test=# SELECT * FROM gist_page_items(get_raw_page('test_gist_idx', 0), 'test_gis <listitem> <para> - Same as <function>gist_page_items</function>, but returns the key data as a raw - bytea blob. For example: + Same as <function>gist_page_items</function>, but returns the key data + as a raw <type>bytea</type> blob. Since it does not attempt to decode + the key, it does not need to know which index is involved. For + example: <screen> test=# SELECT * FROM gist_page_items_bytea(get_raw_page('test_gist_idx', 0)); itemoffset | ctid | itemlen | key_data -------------+-----------+---------+------------------------------------------------------------------------------------ - 1 | (1,65535) | 40 | \x00000100ffff28000000000000c064400000000000c06440000000000000f03f000000000000f03f - 2 | (2,65535) | 40 | \x00000200ffff28000000000000c074400000000000c074400000000000e064400000000000e06440 - 3 | (3,65535) | 40 | \x00000300ffff28000000000000207f400000000000207f400000000000d074400000000000d07440 - 4 | (4,65535) | 40 | \x00000400ffff28000000000000c084400000000000c084400000000000307f400000000000307f40 - 5 | (5,65535) | 40 | \x00000500ffff28000000000000f089400000000000f089400000000000c884400000000000c88440 - 6 | (6,65535) | 40 | \x00000600ffff28000000000000208f400000000000208f400000000000f889400000000000f88940 - 7 | (7,65535) | 40 | \x00000700ffff28000000000000408f400000000000408f400000000000288f400000000000288f40 +------------+-----------+---------+-------------------------------------------&zwsp;----------------------------------------- + 1 | (1,65535) | 40 | \x00000100ffff28000000000000c0644000000000&zwsp;00c06440000000000000f03f000000000000f03f + 2 | (2,65535) | 40 | \x00000200ffff28000000000000c0744000000000&zwsp;00c074400000000000e064400000000000e06440 + 3 | (3,65535) | 40 | \x00000300ffff28000000000000207f4000000000&zwsp;00207f400000000000d074400000000000d07440 + 4 | (4,65535) | 40 | \x00000400ffff28000000000000c0844000000000&zwsp;00c084400000000000307f400000000000307f40 + 5 | (5,65535) | 40 | \x00000500ffff28000000000000f0894000000000&zwsp;00f089400000000000c884400000000000c88440 + 6 | (6,65535) | 40 | \x00000600ffff28000000000000208f4000000000&zwsp;00208f400000000000f889400000000000f88940 + 7 | (7,65535) | 40 | \x00000700ffff28000000000000408f4000000000&zwsp;00408f400000000000288f400000000000288f40 (7 rows) </screen> </para> |