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Peter Eisentraut dd13ad9d39 Fix use of cursor sensitivity terminology 
Documentation and comments in code and tests have been using the terms
sensitive/insensitive cursor incorrectly relative to the SQL standard.
(Cursor sensitivity is only relevant for changes made in the same
transaction as the cursor, not for concurrent changes in other
sessions.)  Moreover, some of the behavior of PostgreSQL is incorrect
according to the SQL standard, confusing the issue further.  (WHERE
CURRENT OF changes are not visible in insensitive cursors, but they
should be.)

This change corrects the terminology and removes the claim that
sensitive cursors are supported.  It also adds a test case that checks
the insensitive behavior in a "correct" way, using a change command
not using WHERE CURRENT OF.  Finally, it adds the ASENSITIVE cursor
option to select the default asensitive behavior, per SQL standard.

There are no changes to cursor behavior in this patch.

Discussion: https://www.postgresql.org/message-id/flat/96ee8b30-9889-9e1b-b053-90e10c050e85%40enterprisedb.com
2021-04-07 08:05:55 +02:00
..
access Remove tupgone special case from vacuumlazy.c. 2021-04-06 08:49:22 -07:00
bootstrap Update copyright for 2021 2021-01-02 13:06:25 -05:00
catalog Change return type of EXTRACT to numeric 2021-04-06 07:20:42 +02:00
commands Split backend status and progress related functionality out of pgstat.c. 2021-04-03 11:42:52 -07:00
common Refactor HMAC implementations 2021-04-03 17:30:49 +09:00
datatype Update copyright for 2021 2021-01-02 13:06:25 -05:00
executor Postpone some stuff out of ExecInitModifyTable. 2021-04-06 15:57:11 -04:00
fe_utils Refactor and generalize the ParallelSlot machinery. 2021-03-11 13:17:46 -05:00
foreign Rework planning and execution of UPDATE and DELETE. 2021-03-31 11:52:37 -04:00
jit Update copyright for 2021 2021-01-02 13:06:25 -05:00
lib Add Result Cache executor node (take 2) 2021-04-02 14:10:56 +13:00
libpq Add some information about authenticated identity via log_connections 2021-04-07 10:16:39 +09:00
mb Do COPY FROM encoding conversion/verification in larger chunks. 2021-04-01 12:23:40 +03:00
nodes Fix use of cursor sensitivity terminology 2021-04-07 08:05:55 +02:00
optimizer Add Result Cache executor node (take 2) 2021-04-02 14:10:56 +13:00
parser Fix use of cursor sensitivity terminology 2021-04-07 08:05:55 +02:00
partitioning ALTER TABLE ... DETACH PARTITION ... CONCURRENTLY 2021-03-25 18:00:28 -03:00
port Add missing pthread_barrier_t. 2021-03-10 17:44:04 +13:00
portability Fix another portability bug in recent pgbench commit. 2021-03-10 23:20:41 +13:00
postmaster Remove temporary files after backend crash 2021-03-18 17:38:28 +01:00
regex Improve memory management in regex compiler. 2021-02-26 13:52:10 -05:00
replication Allow pgoutput to send logical decoding messages. 2021-04-06 08:40:47 +05:30
rewrite Rework planning and execution of UPDATE and DELETE. 2021-03-31 11:52:37 -04:00
snowball Update snowball 2021-02-19 08:10:15 +01:00
statistics Extended statistics on expressions 2021-03-27 00:01:11 +01:00
storage Add function to log the memory contexts of specified backend process. 2021-04-06 13:44:15 +09:00
tcop Detect POLLHUP/POLLRDHUP while running queries. 2021-04-03 09:02:41 +13:00
tsearch Don't leak compiled regex(es) when an ispell cache entry is dropped. 2021-03-18 22:22:47 -04:00
utils Change return type of EXTRACT to numeric 2021-04-06 07:20:42 +02:00
.gitignore Refactor dlopen() support 2018-09-06 11:33:04 +02:00
c.h Work around issues in MinGW-64's setjmp/longjmp support. 2021-03-15 12:34:17 -04:00
fmgr.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
funcapi.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
getaddrinfo.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
getopt_long.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
Makefile Build in some knowledge about foreign-key relationships in the catalogs. 2021-02-02 17:11:55 -05:00
miscadmin.h Add function to log the memory contexts of specified backend process. 2021-04-06 13:44:15 +09:00
pg_config.h.in Refactor HMAC implementations 2021-04-03 17:30:49 +09:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_manual.h Fix concurrency issues with WAL segment recycling on Windows 2021-03-22 14:02:26 +09:00
pg_getopt.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_trace.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pgstat.h Split backend status and progress related functionality out of pgstat.c. 2021-04-03 11:42:52 -07:00
pgtar.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pgtime.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
port.h Move bsearch_arg to src/port 2021-03-23 00:11:22 +01:00
postgres.h Mostly-cosmetic adjustments of TOAST-related macros. 2021-03-22 13:43:10 -04:00
postgres_ext.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
postgres_fe.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
rusagestub.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
windowapi.h Update copyright for 2021 2021-01-02 13:06:25 -05:00