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Please apply patches for contrib/ltree.

Browse Source 
ltree_73.patch.gz - for 7.3 :
        Fix ~ operation bug: eg '1.1.1' ~ '*.1'

ltree_74.patch.gz - for current CVS
    Fix ~ operation bug: eg '1.1.1' ~ '*.1'
    Add ? operation
    Optimize index storage

Last change needs drop/create all ltree indexes, so only for 7.4

Teodor Sigaev
This commit is contained in:
Bruce Momjian
2003-02-19 03:50:09 +00:00
parent a286f73210
commit 71e1f531d3
9 changed files with 525 additions and 144 deletions
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14
contrib/ltree/README.ltree
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@@ -110,6 +110,9 @@ ltree <@ ltree
equal).
ltree ~ lquery, lquery ~ ltree
- return TRUE if node represented by ltree satisfies lquery.
ltree ? lquery[], lquery ? ltree[]
- return TRUE if node represented by ltree satisfies at least one lquery
from array.
ltree @ ltxtquery, ltxtquery @ ltree
- return TRUE if node represented by ltree satisfies ltxtquery.
ltree || ltree, ltree || text, text || ltree
@@ -123,6 +126,9 @@ ltree @> ltree[], ltree[] <@ ltree
- returns TRUE if array ltree[] contains a descendant of ltree.
ltree[] ~ lquery, lquery ~ ltree[]
- returns TRUE if array ltree[] contains label paths matched lquery.
ltree[] ? lquery[], lquery[] ? ltree[]
- returns TRUE if array ltree[] contains label paths matched atleaset one
lquery from array.
ltree[] @ ltxtquery, ltxtquery @ ltree[]
- returns TRUE if array ltree[] contains label paths matched ltxtquery
(full text search).
@@ -142,11 +148,11 @@ Various indices could be created to speed up execution of operations:
* B-tree index over ltree:
<, <=, =, =>, >
* GiST index over ltree:
<, <=, =, =>, >, @>, <@, @, ~
<, <=, =, =>, >, @>, <@, @, ~, ?
Example:
create index path_gist_idx on test using gist (path);
* GiST index over ltree[]:
ltree[]<@ ltree, ltree @> ltree[], @, ~.
ltree[]<@ ltree, ltree @> ltree[], @, ~, ?.
Example:
create index path_gist_idx on test using gist (array_path);
Notices: This index is lossy.
@@ -426,6 +432,10 @@ appreciate your input. So far, below some (rather obvious) results:
CHANGES
Feb 7, 2003
Add ? operation
Fix ~ operation bug: eg '1.1.1' ~ '*.1'
Optimize index storage
Aug 9, 2002
Fixed very stupid but important bug :-)
July 31, 2002