5 Commits (d37781fa82fa6b4316e51aca210d5fb53bd33983)

Author	SHA1	Message	Date
Tom Lane	10a3471bed	Add a RESTART (without parameter) option to ALTER SEQUENCE, allowing a ... sequence to be reset to its original starting value. This requires adding the original start value to the set of parameters (columns) of a sequence object, which is a user-visible change with potential compatibility implications; it also forces initdb. Also add hopefully-SQL-compatible RESTART/CONTINUE IDENTITY options to TRUNCATE TABLE. RESTART IDENTITY executes ALTER SEQUENCE RESTART for all sequences "owned by" any of the truncated relations. CONTINUE IDENTITY is a no-op option. Zoltan Boszormenyi	18 years ago
Tom Lane	aa731ed843	Change nextval and other sequence functions to specify their sequence ... argument as a 'regclass' value instead of a text string. The frontend conversion of text string to pg_class OID is now encapsulated as an implicitly-invocable coercion from text to regclass. This provides backwards compatibility to the old behavior when the sequence argument is explicitly typed as 'text'. When the argument is just an unadorned literal string, it will be taken as 'regclass', which means that the stored representation will be an OID. This solves longstanding problems with renaming sequences that are referenced in default expressions, as well as new-in-8.1 problems with renaming such sequences' schemas or moving them to another schema. All per recent discussion. Along the way, fix some rather serious problems in dbmirror's support for mirroring sequence operations (int4 vs int8 confusion for instance).	21 years ago
Neil Conway	657c098e41	Add a function lastval(), which returns the value returned by the ... last nextval() or setval() performed by the current session. Update the docs, add regression tests, and bump the catalog version. Patch from Dennis Björklund, various improvements by Neil Conway.	21 years ago
Tom Lane	42ce74bf17	COMMENT ON casts, conversions, languages, operator classes, and ... large objects. Dump all these in pg_dump; also add code to pg_dump user-defined conversions. Make psql's large object code rely on the backend for inserting/deleting LOB comments, instead of trying to hack pg_description directly. Documentation and regression tests added. Christopher Kings-Lynne, code reviewed by Tom	22 years ago
Bruce Momjian	5f65225fa3	Todo items: ... Add ALTER SEQUENCE to modify min/max/increment/cache/cycle values Also updated create sequence docs to mention NO MINVALUE, & NO MAXVALUE. New Files: doc/src/sgml/ref/alter_sequence.sgml src/test/regress/expected/sequence.out src/test/regress/sql/sequence.sql ALTER SEQUENCE is NOT transactional. It behaves similarly to setval(). It matches the proposed SQL200N spec, as well as Oracle in most ways -- Oracle lacks RESTART WITH for some strange reason. -- Rod Taylor <rbt@rbt.ca>	23 years ago