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c203d6cf81
postgresql/doc/src/sgml/ref
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Simon Riggs c203d6cf81 Allow HOT updates for some expression indexes 
If the value of an index expression is unchanged after UPDATE,
allow HOT updates where previously we disallowed them, giving
a significant performance boost in those cases.

Particularly useful for indexes such as JSON->>field where the
JSON value changes but the indexed value does not.

Submitted as "surjective indexes" patch, now enabled by use
of new "recheck_on_update" parameter.

Author: Konstantin Knizhnik
Reviewer: Simon Riggs, with much wordsmithing and some cleanup
2018-03-27 19:57:02 +01:00
..
abort.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
allfiles.sgml SQL procedures 2017-11-30 11:03:20 -05:00
alter_aggregate.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_collation.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_conversion.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_database.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_default_privileges.sgml SQL procedures 2017-11-30 11:03:20 -05:00
alter_domain.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_event_trigger.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_extension.sgml SQL procedures 2017-11-30 11:03:20 -05:00
alter_foreign_data_wrapper.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_foreign_table.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_function.sgml SQL procedures 2017-11-30 11:03:20 -05:00
alter_group.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_index.sgml Local partitioned indexes 2018-01-19 11:49:22 -03:00
alter_language.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_large_object.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_materialized_view.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_opclass.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_operator.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_opfamily.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_policy.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_procedure.sgml SQL procedures 2017-11-30 11:03:20 -05:00
alter_publication.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_role.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_routine.sgml SQL procedures 2017-11-30 11:03:20 -05:00
alter_rule.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_schema.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_sequence.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_server.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_statistics.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_subscription.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_system.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_table.sgml Adjust ALTER TABLE docs on partitioned constraints 2018-02-20 12:08:55 -03:00
alter_tablespace.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_trigger.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_tsconfig.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_tsdictionary.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_tsparser.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_tstemplate.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_type.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_user_mapping.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_user.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
alter_view.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
analyze.sgml Add parenthesized options syntax for ANALYZE. 2018-03-05 16:21:05 -08:00
begin.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
call.sgml Support INOUT arguments in procedures 2018-03-14 12:07:28 -04:00
checkpoint.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
close.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
cluster.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
clusterdb.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
comment.sgml SQL procedures 2017-11-30 11:03:20 -05:00
commit_prepared.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
commit.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
copy.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_access_method.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_aggregate.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_cast.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_collation.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_conversion.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_database.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_domain.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_event_trigger.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_extension.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_foreign_data_wrapper.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_foreign_table.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_function.sgml Remove the obsolete WITH clause of CREATE FUNCTION. 2018-01-26 12:25:44 -05:00
create_group.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_index.sgml Allow HOT updates for some expression indexes 2018-03-27 19:57:02 +01:00
create_language.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_materialized_view.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_opclass.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_operator.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_opfamily.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_policy.sgml Fix warnings in man page build 2018-02-28 08:22:51 -05:00
create_procedure.sgml Support INOUT arguments in procedures 2018-03-14 12:07:28 -04:00
create_publication.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_role.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_rule.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_schema.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_sequence.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_server.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_statistics.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_subscription.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_table_as.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_table.sgml doc: Reword restriction on partition keys in unique indexes 2018-03-12 13:32:28 -03:00
create_tablespace.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_transform.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_trigger.sgml Allow FOR EACH ROW triggers on partitioned tables 2018-03-23 10:48:22 -03:00
create_tsconfig.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_tsdictionary.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_tsparser.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_tstemplate.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_type.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_user_mapping.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_user.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
create_view.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
createdb.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
createuser.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
deallocate.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
declare.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
delete.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
discard.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
do.sgml Transaction control in PL procedures 2018-01-22 08:43:06 -05:00
drop_access_method.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_aggregate.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_cast.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_collation.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_conversion.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_database.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_domain.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_event_trigger.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_extension.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_foreign_data_wrapper.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_foreign_table.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_function.sgml SQL procedures 2017-11-30 11:03:20 -05:00
drop_group.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_index.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_language.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_materialized_view.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_opclass.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_operator.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_opfamily.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_owned.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_policy.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_procedure.sgml SQL procedures 2017-11-30 11:03:20 -05:00
drop_publication.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_role.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_routine.sgml SQL procedures 2017-11-30 11:03:20 -05:00
drop_rule.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_schema.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_sequence.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_server.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_statistics.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_subscription.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_table.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_tablespace.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_transform.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_trigger.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_tsconfig.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_tsdictionary.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_tsparser.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_tstemplate.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_type.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_user_mapping.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_user.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
drop_view.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
dropdb.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
dropuser.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
ecpg-ref.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
end.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
execute.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
explain.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
fetch.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
grant.sgml SQL procedures 2017-11-30 11:03:20 -05:00
import_foreign_schema.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
initdb.sgml initdb: Further polishing of --wal-segsize option 2018-03-25 14:58:21 -04:00
insert.sgml Handle INSERT .. ON CONFLICT with partitioned tables 2018-03-26 10:43:54 -03:00
listen.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
load.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
lock.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
move.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
notify.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pg_basebackup.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pg_config-ref.sgml Don't use SGML empty tags 2017-10-17 15:10:33 -04:00
pg_controldata.sgml Add long options to pg_resetwal and pg_controldata 2018-03-24 21:49:53 -04:00
pg_ctl-ref.sgml Documentation fix: pg_ctl no longer makes connection attempts. 2018-01-23 12:42:03 -05:00
pg_dump.sgml Support --no-comments in pg_dump, pg_dumpall, pg_restore. 2018-01-25 15:27:24 -05:00
pg_dumpall.sgml Support --no-comments in pg_dump, pg_dumpall, pg_restore. 2018-01-25 15:27:24 -05:00
pg_isready.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pg_receivewal.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pg_recvlogical.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pg_resetwal.sgml pg_resetwal: Allow users to change the WAL segment size 2018-03-25 14:58:49 -04:00
pg_restore.sgml Support --no-comments in pg_dump, pg_dumpall, pg_restore. 2018-01-25 15:27:24 -05:00
pg_rewind.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pg_waldump.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pgarchivecleanup.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pgbench.sgml Set random seed for pgbench. 2018-03-26 18:26:27 +03:00
pgtestfsync.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pgtesttiming.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
pgupgrade.sgml doc: clarify major/minor pg_upgrade versions with examples 2018-01-31 17:09:59 -05:00
postgres-ref.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
postmaster.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
prepare_transaction.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
prepare.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
psql-ref.sgml Add \if support to pgbench 2018-03-22 17:42:03 +03:00
reassign_owned.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
refresh_materialized_view.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
reindex.sgml Local partitioned indexes 2018-01-19 11:49:22 -03:00
reindexdb.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
release_savepoint.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
reset.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
revoke.sgml SQL procedures 2017-11-30 11:03:20 -05:00
rollback_prepared.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
rollback_to.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
rollback.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
savepoint.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
security_label.sgml SQL procedures 2017-11-30 11:03:20 -05:00
select_into.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
select.sgml Support all SQL:2011 options for window frame clauses. 2018-02-07 00:06:56 -05:00
set_constraints.sgml Convert SGML IDs to lower case 2017-10-20 19:26:10 -04:00
set_role.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
set_session_auth.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
set_transaction.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
set.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
show.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
start_transaction.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
truncate.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
unlisten.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
update.sgml Allow UPDATE to move rows between partitions. 2018-01-19 15:33:06 -05:00
vacuum.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
vacuumdb.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00
values.sgml Convert documentation to DocBook XML 2017-11-23 09:44:28 -05:00