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体验新版 GitCode,发现更多精彩内容 >>
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e7e25b2d
编写于
1月 22, 2002
作者:
B
Bruce Momjian
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TODO list for PostgreSQL
========================
Last updated: Tue Jan 22 1
5:49:54
EST 2002
Last updated: Tue Jan 22 1
6:54:39
EST 2002
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
...
...
@@ -35,55 +35,75 @@ URGENT
* Point-in-time data recovery using backup and write-ahead log
* Allow row re-use without vacuum (Tom)
ADMIN
REPORTING
* Allow elog() to return error codes, module name, file name, line
number, not just messages (Peter E)
* Add error codes (Peter E)
* -Allow international error message support (Peter E)
* Change DEBUG startup tag to NOTICE; change NOTICE to output to client
only if client exists (Bruce)
* Show location of syntax error in query [yacc]
* -Populate backend status area and write program to dump status data (Jan)
PERMISSIONS
* Improve control over user privileges, including table creation and
lock use [privileges] (Karel, others)
* Allow usernames to be specified directly in pg_hba.conf (Bruce)
* Add PGPASSWORDFILE environment variable or ~/.pgpass to store
user/host/password combinations
* Remove PGPASSWORD because is insecure on some OS's
* Make single-user local access permissions the default (Peter E)
* -Allow single-user access without passwords using Unix socket permissions
* -Better document pg_hba.conf host-based authentication (Bruce)
* -Add MD5 to ODBC (Bruce)
* Use thread-safe crypt() in libpq, if available
ADMIN
* Incremental backups
* Make it easier to create a database owned by someone who can't createdb,
perhaps CREATE DATABASE dbname WITH OWNER = "user" (Gavin)
* Make equals sign optional in CREATE DATABASE WITH param = 'val'
* -Permission to DELETE table also allows UPDATE (Peter E)
* Allow elog() to return error codes, module name, file name, line
number, not just messages (Peter E)
* -Allow international error message support (Peter E)
* Add error codes (Peter E)
* -Remove unused sort files on postmaster startup (Bruce)
* Remove unreferenced table files and temp tables during database vacuum
or postmaster startup (Bruce)
* -Remove unreferenced sort files during postmaster startup (Bruce)
* Add table name mapping for numeric file names (Bruce)
* -Better document pg_hba.conf host-based authentication (Bruce)
* -Encrpyt passwords in pg_shadow table using MD5 (Bruce, Vince)
* Incremental backups
* -Encrypt passwords in pg_shadow table using MD5 (Bruce, Vince)
* Remove behavior of postmaster -o after making postmaster/postgres
flags unique
* Allow usernames to be specified directly in pg_hba.conf (Bruce)
* Add function to return compressed length of TOAST data values (Tom)
* Change DEBUG startup tag to NOTICE; change NOTICE to output to client
only if client exists (Bruce)
* Allow logging of query durations
* -Put sort files in their own directory (Bruce)
DATA TYPES
* Add domain capability [domain]
* Add IPv6 capability to INET/CIDR types
* -Add conversion function from text to inet
* Store binary-compatible type information in the system
* Allow better handling of numeric constants, type conversion [typeconv]
* Support construction of array result values in expressions
* Remove Money type, add money formatting for decimal type
* SELECT cash_out(2) crashes because of opaque
* Declare typein/out functions in pg_proc with a special "C string" data type
* Functions returning sets do not totally work
* SELECT col FROM tab WHERE numeric_col = 10.1 fails, requires quotes
* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
* -Add SQL standard function bit_length() (Peter E)
* -Make oid use unsigned int more reliably (Tom)
* Change factorial to return a numeric
* Add function to return compressed length of TOAST data values (Tom)
* CONVERSION
o -Add conversion function from text to inet
o Store binary-compatible type information in the system
o Allow better handling of numeric constants, type conversion
[typeconv]
o SELECT col FROM tab WHERE numeric_col = 10.1 fails, requires quotes
* ARRAYS
o Allow nulls in arrays
o Allow arrays to be ORDER'ed
o Ensure we have array-eq operators for every built-in array type
o Support construction of array result values in expressions
* BINARY DATA
o -Add non-large-object binary field (already exists -- bytea)
o -Make binary interface for TOAST columns (base64)
...
...
@@ -131,8 +151,8 @@ INDEXES
* UNIQUE INDEX on base column not honored on inserts from inherited table
INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail
[inheritance]
* Have UPDATE/DELETE clean out indexes
* Allow UPDATE/DELETE on inherited table
* Have UPDATE/DELETE clean out indexes
* Add UNIQUE capability to non-btree indexes
* Add btree index support for reltime, tinterval, regproc
* Add rtree index support for line, lseg, path, point
...
...
@@ -177,7 +197,8 @@ COMMANDS
* CREATE TABLE AS can not determine column lengths from expressions [atttypmod]
* Allow UPDATE to handle complex aggregates [update]
* Prevent create/drop scripts from allowing extra args (Bruce)
* Allow command blocks that can ignore certain types of errors
* Allow command blocks to ignore certain types of errors
* ALTER
o ALTER TABLE ADD COLUMN does not honor DEFAULT and non-CHECK CONSTRAINT
o ALTER TABLE ADD COLUMN to inherited table put column in wrong place
...
...
@@ -192,23 +213,27 @@ COMMANDS
o ALTER TABLE ADD COLUMN column SET DEFAULT should fill existing
rows with DEFAULT value
o Have ALTER TABLE OWNER change all dependant objects like indexes
* CLUSTER
o cluster all tables at once
o prevent lose of indexes, permissions, inheritance (Bruce)
o Automatically
keep
clustering on a table
o Automatically
maintain
clustering on a table
o -Keep statistics about clustering (Tom) [optimizer]
* COPY
o Allow specification of column names
o Allow dump/load of CSV format
o Change syntax to WITH DELIMITER, (keep old syntax around?)
o Allow COPY to report error lines and continue; optionally
allow error codes to be specified; requires savepoints
* CURSOR
o Allow BINARY option to SELECT,
like we do with
DECLARE
o Allow BINARY option to SELECT,
just like
DECLARE
o MOVE 0 should not move to end of cursor
o Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions
o Allow DELETE WHERE CURRENT OF cursor
o Prevent DROP of table being referenced by our own open cursor
* INSERT
o Allow INSERT/UPDATE of system-generated oid value for a row
o Allow INSERT INTO tab (col1, ..) VALUES (val1, ..), (val2, ..)
...
...
@@ -216,6 +241,7 @@ COMMANDS
o Disallow missing columns in INSERT ... VALUES, per ANSI
o Allow INSERT/UPDATE ... RETURNING new.col or old.col; handle
RULE cases (Philip)
* SHOW/SET
o Add SHOW command to display locks
o -Add SHOW command to show all settings
...
...
@@ -226,6 +252,7 @@ COMMANDS
o Add SET PERFORMANCE_TIPS option to suggest INDEX, VACUUM, VACUUM
ANALYZE, and CLUSTER
o Add SHOW command to see locale
* SERVER-SIDE LANGUAGES
o Allow PL/PgSQL's RAISE function to take expressions
o Fix PL/PgSQL to handle quoted mixed-case identifiers
...
...
@@ -245,15 +272,8 @@ CLIENTS
* Allow psql \d to show temporary table structure
* Add XML interface: psql, pg_dump, COPY, separate server (?)
* -Fix libpq to properly handle socket failures under native MS Win32
* -Add MD5 to ODBC (Bruce)
* Use thread-safe crypt() in libpq, if available
* Add config file check for $ODBCINI, $HOME/.odbc.ini, installpath/etc/odbc.ini
* Add documentation for perl, including mention of DBI/DBD perl location
* Add PGPASSWORDFILE environment variable or ~/.pgpass to store
user/host/password combinations
* Remove PGPASSWORD because is insecure on some OS's
* -Allow single-user access without passwords using Unix socket permissions
* Make single-user local access permissions the default (Peter E)
* JDBC
o Comprehensive test suite. This may be available already.
o Updateable resultSet (must be done in backend code)
...
...
@@ -267,6 +287,7 @@ CLIENTS
o Implement cancel() method on Statement
o Use cursors implicitly to avoid large results (see setCursorName())
o Add support for CallableStatements
* ECPG
o Implement set descriptor, using descriptor
o Make casts work in variable initializations
...
...
@@ -283,7 +304,7 @@ CLIENTS
o -Remove space_or_nl and line_end from pgc.l
o Fix nested C comments
o Add SQLSTATE
o fix handling of DB attributes t
ah
t are arrays
o fix handling of DB attributes t
ha
t are arrays
REFERENTIAL INTEGRITY
...
...
@@ -333,16 +354,6 @@ EXOTIC FEATURES
* SQL*Net listener that makes PostgreSQL appear as an Oracle database
to clients
MISCELLANEOUS
* Increase identifier length (NAMEDATALEN) if small performance hit
* Increase maximum number of function parameters if little wasted space
* -Populate backend status area and write program to dump status data (Jan)
* -Put sort files in their own directory (Bruce)
* Show location of syntax error in query [yacc]
* Change representation of whole-tuple parameters to functions
* Add optional CRC checksum to heap and index pages
* Add WAL index reliability improvement to non-btree indexes
PERFORMANCE
-----------
...
...
@@ -369,7 +380,7 @@ VACUUM
* Reduce lock time by moving tuples with read lock, then write
lock and truncate table [vacuum]
* -Make ANALYZE a separate command (Tom)
* -Allow ANALYZE to ESTIMATE based on certain random p
re
centage of rows (Tom)
* -Allow ANALYZE to ESTIMATE based on certain random p
er
centage of rows (Tom)
* Add LAZY VACUUM (Vadim) [performance]
LOCKING
...
...
@@ -396,6 +407,7 @@ WRITE-AHEAD LOG
* Reduce number of after-change WAL writes; they exist only to gaurd against
partial page writes
* Turn off after-change writes if fsync is disabled (?)
* Add WAL index reliability improvement to non-btree indexes
OPTIMIZER/EXECUTOR
...
...
@@ -410,6 +422,7 @@ OPTIMIZER/EXECUTOR
evaluated only once or once per query
* Change FIXED_CHAR_SEL to 0.20 from 0.04 to give better selectivity (Bruce)
* Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS [exists]
* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
MISCELLANEOUS
...
...
@@ -420,7 +433,6 @@ MISCELLANEOUS
* Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
* -Allow GUC configuration of maximum number of open files (Tom)
* -Improve statistics storage in pg_class [performance] (Tom)
* Allow logging of query durations
* -Read pg_hba.conf only on postmaster startup or SIGHUP (Bruce)
...
...
@@ -438,7 +450,6 @@ SOURCE CODE
* HOLDER/HOLDERTAB rename to PROCLOCK/PROCLOCKTAG (Bruce)
* Remove LockMethodTable.prio field, not used (Bruce)
* Add version file format stamp to heap and other table types
* Make elog(LOG) in WAL its own output type, distinct from DEBUG
* Rename some /contrib modules from pg* to pg_*
* Move some things from /contrib into main tree
* Remove warnings created by -Wcast-align
...
...
@@ -455,6 +466,11 @@ SOURCE CODE
* Improve access-permissions check on data directory in Cygwin (Tom)
* Report failure to find readline or zlib at end of configure run
* Add --port flag to regression tests
* Increase identifier length (NAMEDATALEN) if small performance hit
* Increase maximum number of function parameters if little wasted space
* Add documentation for perl, including mention of DBI/DBD perl location
* Add optional CRC checksum to heap and index pages
* Change representation of whole-tuple parameters to functions
---------------------------------------------------------------------------
...
...
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