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@ -1,54 +1,56 @@ |
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==================================================== |
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TODO list (FAQ) for Postgres95 |
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TODO list (FAQ) for PostgreSQL |
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==================================================== |
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last updated: Thu Oct 3 17:59:06 EDT 1996 |
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last updated: Thu Dec 26 09:03:38 EST 1996 |
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current maintainer: Bruce Momjian (maillist@candle.pha.pa.us) |
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The most recent version of this document can be viewed at |
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the postgres95 WWW site, http://www.ki.net/postgres95. |
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the postgreSQL WWW site, http://www.postgreSQL.org. |
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Dashed items(-) are being worked on or are ready for the 2.0 release. |
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Changes included in the 6.0 release are listed at the end of this page. |
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Dashed items(-) are being worked on for the post-6.0 release. |
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Developers who have claimed items are: |
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Bruce is Bruce Momjian<maillist@candle.pha.pa.us> |
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Bryan is Bryan Henderson<bryanh@giraffe.netgate.net> |
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Dan is Dan McGuirk <mcguirk@indirect.com> |
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Darren is Darren King <darrenk@insightdist.com> |
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Edmund is Edmund Mergl <E.Mergl@bawue.de> |
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Erich Stamberger <eberger@gewi.kfunigraz.ac.at> |
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Kurt is "Kurt J. Lidl" <lidl@va.pubnix.com> |
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Martin is Martin S. Utesch <utesch@aut.tu-freiberg.de> |
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Vadim is "Vadim B. Mikheev" <vadim@sable.krasnoyarsk.su> |
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Vivek is Vivek Khera <khera@kci.kciLink.com> |
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RELIABILITY |
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----------- |
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-Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup |
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-Overhaul bufmgr/lockmgr/transaction manager |
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- remove -S (stable memory) option or fix memory manager |
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-Memory leaks (hunt and destroy with tools like Purify) |
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- fix unitialized reads of memory |
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- fix array over-runs of memory writes |
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-Fix CLUSTER |
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-Prevent improper index creation |
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-Change default decimal constant representation from float4 to float8 |
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-Allow libpq to distinguish between text value '' and null |
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- using null bitmask returned from backend? |
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-Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup(Erich) |
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-Overhaul bufmgr/lockmgr/transaction manager(Vadim) |
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remove -S (stable memory) option or fix memory manager |
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Fix CLUSTER |
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Fix all NULL features |
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allow psql to print nulls meaningfully |
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-Starting quote in insert string errors |
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ALTER TABLE bug - running postgress process needs to re-read table definition |
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Allow non-postgres users with createdb privs to destroydb's |
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Prevent SELECT NULL from crashing server |
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(error on first attempt, crash after another query) |
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-Fix elusive btree range/non-range bug |
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-Remove duplicate system catalog info or report mismatches |
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Fix compile and security of Kerberos V code |
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-Remove duplicate OIDS in system tables |
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Dropping a table twice causes corruption, drop/create not rollback-able |
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Change index creation to process deleted and current rows |
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SUM aggregate on no rows or null value should return NULL, not zero |
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SELECT on two tables where zero or one table in WHERE and target |
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clause returns no rows |
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fix system to use oid index using constant without cast to oid |
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COUNT on VIEW always returns zero (maybe because there is no oid for views?) |
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SELECT ... INTO TABLE ... GROUP BY ... generates unlink error |
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if done three times with same INTO TABLE name (failure cleanup problem?) |
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CREATE VIEW requires super-user priviledge |
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ENHANCEMENTS |
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------------ |
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Add full ANSI SQL capabilities ( a vendor has offered to help) |
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Add full ANSI SQL capabilities |
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add subselects, possibility using temporary SQL functions |
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Implement HAVING clause |
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Implement IN qualifier |
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Implement EXISTS qualifier |
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Implement BETWEEN qualifier |
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add synonym of != for <> |
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column constraints (using rules), esp. primary keys |
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add DEFAULT, RESTRAINT, and CHECK capabilities |
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-add UNIQUE index capability |
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report "Not implemented" if valid syntax is supplied |
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add OUTER joins, left and right |
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make VIEWs updateable where possible |
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@ -60,12 +62,13 @@ Add full ANSI SQL capabilities ( a vendor has offered to help) |
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add the concept of dataspaces |
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allow conversion type casts on select target fields |
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Allow compression of large fields or a compressed field type |
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Fix the rules system |
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Fix the rules system(Jan?) |
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robust |
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making INSTEAD rules work |
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add CONSTRAINT |
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Full set of text operations and functions |
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word searches, concat, upper/lower(), max() on text, char |
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-Replace table-level locking with row or page-level locking |
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Replace table-level locking with row or page-level locking(Vadim) |
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Large objects |
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overwriting blocks has problems |
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there are other problems, too. |
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@ -75,9 +78,10 @@ Better interface for adding to pg_group |
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Make multi-field indexes easier to create |
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allow optimizer to effectively use parameters without accessing table |
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Add int8 type |
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Add MONEY/DECIMAL type with defined precision |
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Add table comments |
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Add support for tables >2G |
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Incorporate the PERL PG95 interface library into source tree |
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Add support for tables >2G, or test current version |
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Incorporate the PERL PG95 interface library into source tree(Edmund) |
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Threaded version of the server or libpq |
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Allow libpq to cancel query requests |
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Add REGEX internationalization |
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@ -85,38 +89,40 @@ Add other language types for built-in functions |
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expand to allow tcl, perl, java, |
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generalize the function manager switch to pass |
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function sources to interpreter engines. |
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-Re-visit and fix vacuum |
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- can't vacuum large objects |
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- can't shrink tables, pg_time and pg_log |
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- allow actual compression, not just reuse on the same page |
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- allow vacuum to be run on one table or entire database |
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remove time-travel feature(Vadim) |
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reduce system column overhead(Vadmin) |
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remove pg_time table(Vadim) |
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allow row re-use without vacuum, maybe?(Vadim) |
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split apart row removal function from statistics function |
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allow time-travel to be turned off so superceeded/deleted row are reused |
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-Reverse meaning of HBA masks |
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Add hostname/user level access control rather than just hostname and user |
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Allow BY,ORDER BY to specify columns by number, or by non-alias table.column |
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Allow GROUP BY to use alias column name |
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Remove restriction that ORDER BY field must be in SELECT list? |
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can't vacuum large objects |
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Remove restriction that ORDER BY field must be in SELECT list(?) |
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Allow queries about owner of datbases, tables like: |
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SELECT u.usesysid FROM postgres.pg_user u; |
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DROP AGGREGATE should take in basetype as an arg |
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DROP AGGREGATE should take in basetype as an arg(Darren) |
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Add word index for text fields, maybe with trigrams, i.e.: |
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' (cat | dog) & ! fox ' meaning text has cat or dog, but not fox |
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Add common-sense constant type promotions |
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-Allow uppercase agregates by lowercasing function names on input |
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Allow readline-type or editor command editing of multi-line SQL commands |
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Allow pg_dump to dump all databases at a site in one command |
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-Allow restriction on who can create C functions |
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Allow restriction on who can create copy tables |
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-Allow installation-configuration option to auto-add all local users |
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Allow function result to be used in GROUP BY |
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-Fontend COPY |
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-Secure Authentication of local users |
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-Idend authentication of local users |
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Populate backend status area and write program to dump status data |
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Add ALTER TABLE DROP COLUMN feature |
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Remove stale files upon startup(Vivek) |
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Add command to show privileges |
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Allow INSERT INTO ... SELECT to convert column types |
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Add syslog functionality |
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Allow aggregate for All types, like count(Darren) |
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Improve optimizer plan choice(Darren) |
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Add STDDEV/VARIANCE() function for standard deviation computation/variance |
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Add upper/lower functions |
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-Add table/column/function discription table indexed by oid |
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-make all identifiers case-insensitive(Bruce) |
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PERFORMANCE |
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----------- |
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Optimizing disjunctive queries |
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-Add Genetic Query Optimzation for many tables (Martin) |
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-Fix bushy-plans (Martin) |
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Other optimizer bugs |
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Is fsync use optimized? |
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Multi-representational types, a la Illustra. For example, have a |
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@ -128,18 +134,123 @@ Speed up hash creation by using btree's fast sort/insert routines |
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Cache most recent query plan(s?) |
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Allow compression of log and meta data |
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Allow LIKE/wildcard matches to use indexes if the wildcard character is not first |
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Add FILLFACTOR to index creation |
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Allow indexes to be used with OR clauses |
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-Add column optimization statistics to vacuum(Bruce) |
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-Change pg_attribute.attnvals name to attdispursion and change type float4 |
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DOCUMENTATION |
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------------- |
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Update usermanual source |
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Reduce size of regression diffs |
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remove time-travel in documentation(Bruce) |
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added features used in grammer but not in docs, like :: and CAST |
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add DECLARE manual pages |
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add EXPLAIN manual page |
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PORTABILITY |
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----------- |
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Windows NT port |
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Mariposa project at Berkeley has a person who's working on this |
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Win95 port, use GNU port or remove it? |
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Binary distributions for linux |
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Merge bsdi_2_1 to bsdi |
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Merge i386_solaris and sparc_solaris into solaris |
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Switch from PORTNAME to individual feature defines (use configure/autoconf?) |
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Change c.h "Index" and "bool" so they do not conflict with c++ |
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--------------------------------------------------------------------------- |
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CHANGES IN 6.0 RELEASE |
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Restructured object file generation/location(Bryan, Marc) |
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Restructured port-specific file locations(Bryan, Marc) |
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Makefile restructuring(Bryan, Marc) |
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all functions now have prototypes that are compared against the calls |
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unused/uninialized variables corrected |
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gcc -Wall compiles cleanly with warnings only from unfixable constructs |
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major include file reorganization/reduction(Marc) |
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reduced the number of #define's, centeralized #define's |
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removed many os-specific #define's |
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fixed a few small memory leaks |
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removed duplicate system oid's |
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overhauled parser/analyze code to properly report errors and increase speed |
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properly report errors when INSERT ... SELECT columns did not match |
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properly report errors when insert column names were not correct |
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minor improvements to rules system |
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execute lowercase function names if not found with exact case |
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change oid constants used in code to #define names |
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Memory leaks (hunt and destroy with tools like Purify(Kurt) |
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fix unitialized reads of memory(Kurt) |
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fix array over-runs of memory writes(Kurt) |
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Change default decimal constant representation from float4 to float8(Bruce) |
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Allow libpq to distinguish between text value '' and null(Bruce) |
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Starting quote in insert string errors(Bruce) |
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ALTER TABLE bug - running postgress process needs to re-read table definition |
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Allow non-postgres users with createdb privs to destroydb's |
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Prevent SELECT NULL from crashing server (Bruce) |
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Fix elusive btree range/non-range bug(Dan) |
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Remove duplicate system catalog info or report mismatches(Dan) |
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Remove duplicate OIDS in system tables(Dan) |
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Prevent postmaster from being run as root |
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Implement IN qualifier(Bruce) |
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Implement BETWEEN qualifier(Bruce) |
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add synonym of != for <>(Bruce) |
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add UNIQUE index capability(Dan) |
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Re-visit and fix vacuum(Vadim) |
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speed up vacuum(Vadim) |
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can't shrink tables, pg_time and pg_log(Vadim & Erich) |
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allow actual compression, not just reuse on the same page(Vadim) |
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allow vacuum to be run on one table or entire database(Bruce) |
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Reverse meaning of HBA masks(Bryan) |
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Add hostname/user level access control rather than just hostname and user |
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Allow restriction on who can create C functions(Bryan) |
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Allow installation-configuration option to auto-add all local users(Bryan) |
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Allow restriction on who can do backend COPY(Bryan) |
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allow COPY from the frontend(Bryan) |
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Secure Authentication of local users(Bryan) |
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Idend authentication of local users(Bryan) |
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Change debug level 2 to print queries only, changed debug heading layout(Bruce) |
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Reduce size of regression diffs, remove timezone name difference(Bruce) |
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Remove compile-time parameters to enable binary distributions(Bryan) |
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Merge bsdi_2_1 to bsdi(Bruce) |
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pg_dump(Bruce) |
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allow dump of oid's |
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create indexes after tables are loaded for speed |
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pg_dump -d now handles NULL's properly |
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psql(Bruce) |
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fixed problem with multiple statements on one line with multiple outputs |
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changed command prompt for lines in query or in quotes |
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allow backslashed, semicolons anywhere on the line |
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\h and \? is now readable |
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\g filename now works |
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updated help syntax |
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char(3) now displays as (bp)char in \d output |
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return code now more accurate(Bryan?) |
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new config.h file(Marc, Bryan) |
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fix permissions on lo_export()(Bruce) |
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Make now stops on compile failure(Bryan) |
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submiting an empty query now returns empty status, not just " " query(Bruce) |
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several fixes for queries that crashed the backend |
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portability additions, including Ultrix, DG/UX, AIX, and Solaris |
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fix for pg_log size explosion |
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decoupled sparc and solaris defines(Kurt) |
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new options to initdb(Bryan) |
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allow asserts to be disabled easly from Makefile.global(Bruce) |
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allow "select oid,* from table" |
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NOTIFY fixes |
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PG_VERSION now set to 6.0 and used by postmaster |
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libpq has PQgetisnull()(Bruce) |
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pginterface additions for NULL values(Bruce) |
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fixed ALTER TABLE ... char(3) bug(Bruce) |
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fixed output of group acl permissions |
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new asserts for run-checking |
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name change from Postgres95 to PostgreSQL |
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monitor program removed |
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fix for hash indexes on some types like time and date |
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gist now included in the distrubution(Marc) |
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array fixes |
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fixes for aggregate/GROUP processing, allow 'select sum(func(x),sum(x+y) from z' |
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libpq++ improvements |
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Allow BY,ORDER BY to specify columns by number, or by non-alias table.column(Bruce) |
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Allow GROUP BY to use alias column name(Bruce) |
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Bruce Momjian
29 years ago