Peter Eisentraut 086ffddf36 Fix several DDL issues of generated columns versus inheritance ... Several combinations of generated columns and inheritance in CREATE TABLE were not handled correctly. Specifically: - Disallow a child column specifying a generation expression if the parent column is a generated column. The child column definition must be unadorned and the parent column's generation expression will be copied. - Prohibit a child column of a generated parent column specifying default values or identity. - Allow a child column of a not-generated parent column specifying itself as a generated column. This previously did not work, but it was possible to arrive at the state via other means (involving ALTER TABLE), so it seems sensible to support it. Add tests for each case. Also add documentation about the rules involving generated columns and inheritance. Discussion: https://www.postgresql.org/message-id/flat/15830.1575468847%40sss.pgh.pa.us https://www.postgresql.org/message-id/flat/2678bad1-048f-519a-ef24-b12962f41807%40enterprisedb.com https://www.postgresql.org/message-id/flat/CAJvUf_u4h0DxkCMCeEKAWCuzGUTnDP-G5iVmSwxLQSXn0_FWNQ%40mail.gmail.com		2020-05-08 11:31:57 +02:00
..
src	Fix several DDL issues of generated columns versus inheritance	2020-05-08 11:31:57 +02:00
KNOWN_BUGS	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
Makefile	Remove maintainer-check target, fold into normal build	2013-10-10 20:11:56 -04:00
MISSING_FEATURES	Remove extra newlines at end and beginning of files, add missing newlines	2010-08-19 05:57:36 +00:00
TODO	Change documentation references to PG website to use https: not http:	2017-05-20 21:50:47 -04:00