diff options
| -rw-r--r-- | contrib/hstore/README.hstore | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/contrib/hstore/README.hstore b/contrib/hstore/README.hstore index 89c67bf3703..94379e9eb4c 100644 --- a/contrib/hstore/README.hstore +++ b/contrib/hstore/README.hstore @@ -11,9 +11,8 @@ Authors * Oleg Bartunov <oleg@sai.msu.su>, Moscow, Moscow University, Russia * Teodor Sigaev <teodor@sigaev.ru>, Moscow, Delta-Soft Ltd.,Russia -License - -Stable version, included into PostgreSQL distribution, released under BSD license. Development version, available from this site, released under the GNU General Public License, version 2 (June 1991). +LEGAL NOTICES: This module is released under BSD license (as PostgreSQL +itself) Operations @@ -61,7 +60,8 @@ regression=# select 'a=>b, b=>1, c=>NULL'::hstore @ 'b=>1'; t (1 row) - * hstore ~ hstore - contained operation, check if left operand is contained in right + * hstore ~ hstore - contained operation, check if left operand is contained + in right Functions @@ -95,7 +95,8 @@ regression=# select svals('a=>1,b=>2'); 1 2 - * delete (hstore,text) - delete (key,value) from hstore if key matches argument. + * delete (hstore,text) - delete (key,value) from hstore if key matches + argument. regression=# select delete('a=>1,b=>2','b'); delete @@ -110,14 +111,16 @@ regression=# select * from each('a=>1,b=>2'); a | 1 b | 2 - * isexists (hstore,text) - returns 'true if key is exists in hstore and false otherwise. + * isexists (hstore,text) - returns 'true if key is exists in hstore and + false otherwise. regression=# select isexists('a=>1','a'); isexists ---------- t - * isdefined (hstore,text) - returns true if key is exists in hstore and its value is not NULL. + * isdefined (hstore,text) - returns true if key is exists in hstore and + its value is not NULL. regression=# select isdefined('a=>NULL','a'); isdefined @@ -148,7 +151,9 @@ update tt set h=delete(h,'k1'); * Statistics -hstore type, because of its intrinsic liberality, could contain a lot of different keys. Checking for valid keys is the task of application. Examples below demonstrate several techniques how to check keys statistics. +hstore type, because of its intrinsic liberality, could contain a lot of +different keys. Checking for valid keys is the task of application. +Examples below demonstrate several techniques how to check keys statistics. o simple example @@ -172,4 +177,4 @@ select key, count(*) from (select (each(h)).key from testhstore) as stat group b public | 194 title | 190 org | 189 -...................
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