Horton

Re: [HACKERS] generated columns

Justin Pryzby <pryzby@telsasoft.com>

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From: Justin Pryzby <pryzby@telsasoft.com>
To: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Cc: Pavel Stehule <pavel.stehule@gmail.com>, Michael Paquier <michael@paquier.xyz>, pgsql-hackers <pgsql-hackers@postgresql.org>, Sergei Kornilov <sk@zsrv.org>, Jaime Casanova <jaime.casanova@2ndquadrant.com>
Date: 2019-03-30T09:24:16Z
Lists: pgsql-hackers 
On Sat, Mar 30, 2019 at 09:03:03AM +0100, Peter Eisentraut wrote:
> On 2019-03-26 20:50, Pavel Stehule wrote:
> > It is great feature and I'll mark this feature as ready for commit
> 
> Committed, thanks.

create_table.sgml now has this:

https://www.postgresql.org/docs/devel/sql-createtable.html#id-1.9.3.85.6.2.18.1.2
+     <para>
+      The keyword <literal>STORED</literal> is required to signify that the
+      column will be computed on write and will be stored on disk.  default.
+     </para>

What does "default." mean ?

Also, this is working but not documented as valid:
postgres=# CREATE TABLE t (j int, i int GENERATED BY DEFAULT AS (j*j+1) STORED);

Justin

Commits

  1. Generated columns

  2. Add walreceiver API to get remote server version

  3. Add pg_partition_tree to display information about partitions

  4. pg_restore: Augment documentation for -N option

  5. Change delimiter used for display of NextXID