>
>   A more complex solution would be to save multiple plans for different
>   cardinality and use the appropriate plan based on the EXECUTE values.
>

< * Allow star join optimizations
<
<   While our bitmap scan allows multiple indexes to be joined to get
<   to heap rows, a star joins allows multiple dimension _tables_ to
<   be joined to index into a larger main fact table.  The join is
<   usually performed by either creating a cartesian product of all
<   the dimmension tables and doing a single join on that product or
<   using subselects to create bitmaps of each dimmension table match
<   and merge the bitmaps to perform the join on the fact table.  Some
<   of these algorithms might be patented.

< * Flush cached query plans when the dependent objects change or
<   when the cardinality of parameters changes dramatically
> * Flush cached query plans when the dependent objects change,
>   when the cardinality of parameters changes dramatically, or
>   when new ANALYZE statistics are available

Drake:

<   and merge the bitmaps to perform the join on the fact table.
>   and merge the bitmaps to perform the join on the fact table.  Some
>   of these algorithms might be patented.

* Allow star join optimizations

  While our bitmap scan allows multiple indexes to be joined to get
  to heap rows, a star joins allows multiple dimension _tables_ to
  be joined to index into a larger main fact table.  The join is
  usually performed by either creating a cartesian product of all
  the dimmension tables and doing a single join on that product or
  using subselects to create bitmaps of each dimmension table match
  and merge the bitmaps to perform the join on the fact table.

< * %Add pg_get_acldef(), pg_get_typedefault(), and pg_get_attrdef()
> * %Add pg_get_acldef(), pg_get_typedefault(), pg_get_attrdef(),
>   pg_get_tabledef(), pg_get_domaindef(), pg_get_functiondef()

< * Flush cached query plans when the dependent objects change
> * Flush cached query plans when the dependent objects change or
>   when the cardinality of parameters changes dramatically

> * Allow the count returned by SELECT, etc to be to represent as an int64
>   to allow a higher range of values

< * %Allow pooled connections to list all prepared queries
> * %Allow pooled connections to list all prepared statements
28c28
<   the queries prepared in the current session.
>   the statements prepared in the current session.
143c143
< 	  o Allow a warm standby system to also allow read-only queries
> 	  o Allow a warm standby system to also allow read-only statements
404c404
< * Add GUC to issue notice about queries that use unjoined tables
> * Add GUC to issue notice about statements that use unjoined tables
490c490
< 	  Another idea would be to allow actual SELECT queries in a COPY.
> 	  Another idea would be to allow actual SELECT statements in a COPY.
554c554
< 	o Allow function argument names to be queries from PL/PgSQL
> 	o Allow function argument names to be statements from PL/PgSQL
591c591
< 	o Improve psql's handling of multi-line queries
> 	o Improve psql's handling of multi-line statements
< 	  Currently, while \e saves a single query as one entry, interactive
< 	  queries are saved one line at a time.  Ideally all queries
> 	  Currently, while \e saves a single statement as one entry, interactive
> 	  statements are saved one line at a time.  Ideally all statements
665c665
< 	o Allow query results to be automatically batched to the client
> 	o Allow statement results to be automatically batched to the client
667c667
< 	  Currently, all query results are transfered to the libpq
> 	  Currently, all statement results are transfered to the libpq
672c672
< 	  One complexity is that a query like SELECT 1/col could error
> 	  One complexity is that a statement like SELECT 1/col could error
739c739
< * Allow queries across databases or servers with transaction
> * Allow statements across databases or servers with transaction
<   inheritance, allow it to work for UPDATE and DELETE queries, and allow
<   it to be used for all queries with little performance impact
>   inheritance, allow it to work for UPDATE and DELETE statements, and allow
>   it to be used for all statements with little performance impact
876c876
< * Consider automatic caching of queries at various levels:
> * Consider automatic caching of statements at various levels:
947c947
<   a single session using multiple threads to execute a query faster.
>   a single session using multiple threads to execute a statement faster.
1025c1025
< * Log queries where the optimizer row estimates were dramatically
> * Log statements where the optimizer row estimates were dramatically
1146c1146
< 	  of result sets using new query protocol
> 	  of result sets using new statement protocol

< * Add GUC variable to run a command on database panic or
<   smart/fast/immediate shutdown

< * Allow installing to directories containing spaces
> * -Allow installing to directories containing spaces

* -Have initdb set the input DateStyle (MDY or DMY) based on locale

> * Teodor is Teodor Sigaev <teodor@sigaev.ru>

< * Claudio is Claudio Natoli <claudio.natoli@memetrics.com>
1166d1164
< * Hiroshi is Hiroshi Inoue <Inoue@tpf.co.jp>

<   at initdb time or optionally later.
>   at initdb time or optionally later.  Consider O_SYNC when
>   O_DIRECT exists.

> * Add GUC variable to run a command on database panic or
>   smart/fast/immediate shutdown

< 	  Win32 API, and we have to make sure MinGW handles it.
> 	  Win32 API, and we have to make sure MinGW handles it.  Another
> 	  option is to wait for the MinGW project to fix it, or use the
> 	  code from the LibGW32C project as a guide.

> 	o Add long file support for binary pg_dump output
>
> 	  While Win32 supports 64-bit files, the MinGW API does not,
> 	  meaning we have to build an fseeko replacement on top of the
> 	  Win32 API, and we have to make sure MinGW handles it.

> * Add SPI_gettypmod() to return the typemod for a TupleDesc

> 	o Consider logging activity either to the logs or a system view

< * Add function to return the thread safety status of libpq and ecpg

< * Change NUMERIC to enforce the maximum precision, and increase it
> * Change NUMERIC to enforce the maximum precision

<   be cleared when a heap tuple is expired.  Another idea is to maintain
<   a bitmap of heap pages where all rows are visible to all backends,
<   and allow index lookups to reference that bitmap to avoid heap
<   lookups, perhaps the same bitmap we might add someday to determine
<   which heap pages need vacuuming.
>   be cleared when a heap tuple is expired.
>
>   Another idea is to maintain a bitmap of heap pages where all rows
>   are visible to all backends, and allow index lookups to reference
>   that bitmap to avoid heap lookups, perhaps the same bitmap we might
>   add someday to determine which heap pages need vacuuming.  Frequently
>   accessed bitmaps would have to be stored in shared memory.  One 8k
>   page of bitmaps could track 512MB of heap pages.

<   the heap.  One way to allow this is to set a bit to index tuples
>   the heap.  One way to allow this is to set a bit on index tuples
<   be cleared when a heap tuple is expired.
<
>   be cleared when a heap tuple is expired.  Another idea is to maintain
>   a bitmap of heap pages where all rows are visible to all backends,
>   and allow index lookups to reference that bitmap to avoid heap
>   lookups, perhaps the same bitmap we might add someday to determine
>   which heap pages need vacuuming.

>   [merge]
378a380
>   [merge]

< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
<   triggers?)
> * Add SQL-standard MERGE command, typically used to merge two tables
>
>   This is similar to UPDATE, then for unmatched rows, INSERT.
>   Whether concurrent access allows modifications which could cause
>   row loss is implementation independent.
>
> * Add REPLACE or UPSERT command that does UPDATE, or on failure, INSERT

< #A hyphen, "-", marks changes that will appear in the upcoming 8.1 release.#
> #A hyphen, "-", marks changes that will appear in the upcoming 8.2 release.#

< * Remove Win32 rename/unlink looping if unnecessary

> * Allow COMMENT ON to accept an expression rather than just a string

<
> 	o Add -f to pg_dumpall

> 	o -Allow NULLs in arrays

>
> * Add estimated_count(*) to return an estimate of COUNT(*)
>
>   This would use the planner ANALYZE statistatics to return an estimated
>   count.

<   so duplicate checking can be easily performed.
>   so duplicate checking can be easily performed.  It is possible to
>   do it without a unique index if we require the user to LOCK the table
>   before the MERGE.

< * Add a libpq function to support Parse/DescribeStatement capability
< * Add PQescapeIdentifier() to libpq
< * Prevent PQfnumber() from lowercasing unquoted the column name
<
<   PQfnumber() should never have been doing lowercasing, but historically
<   it has so we need a way to prevent it
<
648a642,661
>
>
> libpq
>
> 	o Add a function to support Parse/DescribeStatement capability
> 	o Add PQescapeIdentifier()
> 	o Prevent PQfnumber() from lowercasing unquoted the column name
>
> 	  PQfnumber() should never have been doing lowercasing, but
> 	  historically it has so we need a way to prevent it
>
> 	o Allow query results to be automatically batched to the client
>
> 	  Currently, all query results are transfered to the libpq
> 	  client before libpq makes the results available to the
> 	  application.  This feature would allow the application to make
> 	  use of the first result rows while the rest are transfered, or
> 	  held on the server waiting for them to be requested by libpq.
> 	  One complexity is that a query like SELECT 1/col could error
> 	  out mid-way through the result set.

>
>   To implement this cleanly requires that the table have a unique index
>   so duplicate checking can be easily performed.
>

< 	o Allow ALTER TABLE RENAME CONSTRAINT
> 	o Add ALTER TABLE RENAME CONSTRAINT, update index name also

> 	o Have ALTER INDEX update the name of a constraint using that index
> 	o Allow ALTER TABLE RENAME CONSTRAINT

< 	o Add a GUC variable to allow output of interval values in ISO8601
< 	  format
212a211,223
> 	o Add a GUC variable to allow output of interval values in ISO8601
> 	  format
> 	o Improve timestamptz subtraction to be DST-aware
>
> 	  Currently, subtracting one date from another that crosses a
> 	  daylight savings time adjustment can return '1 day 1 hour', but
> 	  adding that back to the first date returns a time one hour in
> 	  the future.  This is caused by the adjustment of '25 hours' to
> 	  '1 day 1 hour', and '1 day' is the same time the next day, even
> 	  if daylight savings adjustments are involved.
>
> 	o Fix interval display to support values exceeding 2^31 hours
> 	o Add overflow checking to timestamp and interval arithmetic