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Postgres FD Implementation
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Abuhujair Javed
Postgres FD Implementation
Commits
326a69de
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326a69de
authored
Jan 13, 2000
by
Bruce Momjian
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Update TODO list.
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326a69de
TODO list for PostgreSQL
========================
Last updated: Wed Jan 12 2
1:34:10
EST 2000
Last updated: Wed Jan 12 2
2:02:56
EST 2000
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
...
...
@@ -33,7 +33,7 @@ PARSER
* -Array index references without table name cause problems [array](Tom)
* Update table SET table.value = 3 fails(SQL standard says this is OK)
* Creating index of TIMESTAMP & RELTIME fails, or rename to DATETIME(Thomas)
*
-
SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo
* SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo
* -INSERT ... SELECT ... GROUP BY groups by target columns not source columns(Tom)
* -CREATE TABLE test (a char(5) DEFAULT text '', b int4) fails on INSERT(Tom)
* -UNION with LIMIT fails
...
...
@@ -49,7 +49,7 @@ PARSER
* redesign INSERT ... SELECT to have two levels of target list
* -select * from pg_class where oid in (0,-1)
* have INTERSECT/EXCEPT prevent duplicates unless ALL is specified
* prevent primary key that exceeds max index columns [primary]
*
-
prevent primary key that exceeds max index columns [primary]
* -SELECT COUNT('asdf') FROM pg_class WHERE oid=12 crashes
* SELECT DISTINCT ON col1 col1 col2 FROM tab1 is broken [distinct]
* -require SELECT DISTINCT target list to have all ORDER BY columns
...
...
@@ -73,6 +73,10 @@ MISC
* plpgsql regression tests fails on BSD/OS
* -database names with spaces fail
* insert of 0.0 into DECIMAL(4,4) field fails
* Interlock to prevent DROP DATABASE on a database with running backends
* Buffer reference counting bugfixes
* Fix libpq bug that causes it to drop backend error message sent
just before connection closure (ie, any FATAL error message
ENHANCEMENTS
------------
...
...
@@ -102,10 +106,9 @@ TYPES
* Nchar (as distinguished from ordinary varchar),
* Domain capability
* Add STDDEV/VARIANCE() function for standard deviation computation/variance
*
-
Allow compression of large fields or a compressed field type
* Allow compression of large fields or a compressed field type
* Large objects
o Fix large object mapping scheme, own typeid or reltype(Peter)
o -Allow large text type to use large objects(Peter)
o Not to stuff everything as files in a single directory, hash dirs
o Allow large object vacuuming
o Tables that start with xinv confused to be large objects
...
...
@@ -171,7 +174,8 @@ CLIENTS
* -Allow flag to control COPY input/output of NULLs
* Update reltuples from COPY command
* -Allow psql \copy to allow delimiters
* -Add a function to return the last inserted oid, for use in psql scripts
* -Add a function to return the last inserted oid, for use in psql
scripts (Peter E)
* -Allow psql to print nulls as distinct from "" [null]
EXOTIC FEATURES
...
...
@@ -204,7 +208,7 @@ MISC
* Put sort files, large objects in their own directory
* Do autocommit so always in a transaction block(?)
* Show location of syntax error in query [yacc]
* Redesign the function call interface to handle NULLs better[function](T
O
m)
* Redesign the function call interface to handle NULLs better[function](T
o
m)
* -Document/trigger/rule so changes to pg_shadow recreate pg_pwd [pg_shadow]
* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
* -Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
...
...
@@ -230,12 +234,10 @@ INDEXES
* Pull requested data directly from indexes, bypassing heap data
* Use index to restrict rows returned by multi-key index when used with
non-consecutive keys or OR clauses, so fewer heap accesses
* -Convert function(constant) into a constant for index use(Tom)
* Allow LIMIT ability on single-table queries that have no ORDER BY to use
a matching index [limit]
* -Convert function(constant) into a constant for index use(Bernard Frankpitt)
* Improve LIMIT processing by using index to limit rows processed [limit]
* Have optimizer take LIMIT into account when considering index scans [limit]
* -Make index creation use psort code, because it is now faster(
Vadi
m)
* -Make index creation use psort code, because it is now faster(
To
m)
* -Allow creation of sort temp tables > 1 Gig
* -Create more system table indexes for faster cache lookups
* -fix indexscan() so it does leak memory by not requiring caller to
...
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@@ -250,7 +252,7 @@ CACHE
* Cache most recent query plan(s) [prepare]
* Shared catalog cache, reduce lseek()'s by caching table size in shared area
*
-
elog() flushes cache, try invalidating just entries from current xact,
* elog() flushes cache, try invalidating just entries from current xact,
perhaps using invalidation cache
...
...
@@ -263,7 +265,7 @@ MISC
* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
when it is available
* Use mmap() rather than SYSV shared memory(?)
* -Process const = const parts of OR clause in separate pass(
Tom
)
* -Process const = const parts of OR clause in separate pass(
Bernard Frankpitt
)
* Make oid use oidin/oidout not int4in/int4out in pg_type.h
* Improve Subplan list handling
* Allow Subplans to use efficient joins(hash, merge) with upper variable
...
...
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