the parsetree representation.  As yet we don't *do* anything with schema
names, just drop 'em on the floor; but you can enter schema-compatible
command syntax, and there's even a primitive CREATE SCHEMA command.
No doc updates yet, except to note that you can now extract a field
from a function-returning-row's result with (foo(...)).fieldname.

(current as of a few hours ago.)

This patch:

1. Adds PG_GETARG_xxx_P_SLICE() macros and associated support routines.

2. Adds routines in src/backend/access/tuptoaster.c for fetching only
necessary chunks of a toasted value. (Modelled on latest changes to
assume chunks are returned in order).

3. Amends text_substr and bytea_substr to use new methods. It now
handles multibyte cases -and should still lead to a performance
improvement in the multibyte case where the substring is near the
beginning of the string.

4. Added new command: ALTER TABLE tabname ALTER COLUMN colname SET
STORAGE {PLAIN | EXTERNAL | EXTENDED | MAIN} to parser and documented in
alter-table.sgml. (NB I used ColId as the item type for the storage
mode string, rather than a new production - I hope this makes sense!).
All this does is sets attstorage for the specified column.

4. AlterTableAlterColumnStatistics is now AlterTableAlterColumnFlags and
handles both statistics and storage (it uses the subtype code to
distinguish). The previous version of my patch also re-arranged other
code in backend/commands/command.c but I have dropped that from this
patch.(I plan to return to it separately).

5. Documented new macros (and also the PG_GETARG_xxx_P_COPY macros) in
xfunc.sgml. ref/alter_table.sgml also contains documentation for ALTER
COLUMN SET STORAGE.

John Gray

Purge "Postgres" in favor of "PostgreSQL" in docs. ref/ not yet done.

StÅphane Raimbault.

in C, but recommend that newbies who don't recognize this trick should do
some studying ...

functions handling composite types and sets, various minor cleanups.

under libdir, for a cleaner separation in the installation layout
and compatibility with binary packaging standards.  Point backend's
default search location there.  The contrib modules are also
installed in the said location, giving them the benefit of the
default search path as well.  No changes in user interface
nevertheless.

man page to the Programmer's Guide.

Client headers are no longer in a subdirectory, since they have been made
namespace-clean.

Internal libpq headers are in a private subdirectory.

Server headers are in a private subdirectory.  pg_config has a new option
to point there.

FUNCTION command.  Guard against trying to load a directory.  Update
documentation some.

syntax, type names, function names, etc.)

etc.

full word "version" where appropriate.

in pghackers list.  Support for oldstyle internal functions is gone
(no longer needed, since conversion is complete) and pg_language entry
'internal' now implies newstyle call convention.  pg_language entry
'newC' is gone; both old and newstyle dynamically loaded C functions
are now called language 'C'.  A newstyle function must be identified
by an associated info routine.  See src/backend/utils/fmgr/README.

names for the HTML files (e.g., not x4856.htm).

 (aka Henry) <laser@zhangmai.com.cn>.
Fix new problems in insert.sgml and create_function.sgml which kept jade
 from completing.

macros where appropriate (the code used to have several different ways
of doing that, including Int32, Int8, UInt8, ...).  Remove last few
references to float32 and float64 typedefs --- it's all float4/float8
now.  The typedefs themselves should probably stay in c.h for a release
or two, though, to avoid breaking user-written C functions.

PQconnectdb() style connections.