Tom Lane 8f889b1083 Implement UPDATE tab SET (col1,col2,...) = (SELECT ...), ... ... This SQL-standard feature allows a sub-SELECT yielding multiple columns (but only one row) to be used to compute the new values of several columns to be updated. While the same results can be had with an independent sub-SELECT per column, such a workaround can require a great deal of duplicated computation. The standard actually says that the source for a multi-column assignment could be any row-valued expression. The implementation used here is tightly tied to our existing sub-SELECT support and can't handle other cases; the Bison grammar would have some issues with them too. However, I don't feel too bad about this since other cases can be converted into sub-SELECTs. For instance, "SET (a,b,c) = row_valued_function(x)" could be written "SET (a,b,c) = (SELECT * FROM row_valued_function(x))".		2014-06-18 13:22:34 -04:00
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.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	2010-09-22 12:57:04 +02:00
binary_upgrade.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
catalog.h	Rationalize common/relpath.[hc].	2014-04-30 17:30:50 -04:00
catversion.h	Implement UPDATE tab SET (col1,col2,...) = (SELECT ...), ...	2014-06-18 13:22:34 -04:00
dependency.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
duplicate_oids	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
genbki.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
heap.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
index.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
indexing.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
namespace.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
objectaccess.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
objectaddress.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_aggregate.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_am.h	Allow opclasses to provide tri-valued GIN consistent functions.	2014-03-12 17:51:30 +02:00
pg_amop.h	Add btree and hash opclasses for pg_lsn.	2014-06-04 20:45:56 -04:00
pg_amproc.h	Add btree and hash opclasses for pg_lsn.	2014-06-04 20:45:56 -04:00
pg_attrdef.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_attribute.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_auth_members.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_authid.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_cast.h	Introduce jsonb, a structured format for storing json.	2014-03-23 16:40:19 -04:00
pg_class.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_collation.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_collation_fn.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_constraint.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_control.h	Add defenses against running with a wrong selection of LOBLKSIZE.	2014-06-05 11:31:06 -04:00
pg_conversion.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_conversion_fn.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_database.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_db_role_setting.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_default_acl.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_depend.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_description.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_enum.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_event_trigger.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_extension.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_foreign_data_wrapper.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_foreign_server.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_foreign_table.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_index.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_inherits.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_inherits_fn.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_language.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_largeobject.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_largeobject_metadata.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_namespace.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_opclass.h	Add btree and hash opclasses for pg_lsn.	2014-06-04 20:45:56 -04:00
pg_operator.h	Add btree and hash opclasses for pg_lsn.	2014-06-04 20:45:56 -04:00
pg_opfamily.h	Add btree and hash opclasses for pg_lsn.	2014-06-04 20:45:56 -04:00
pg_pltemplate.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_proc.h	Rename lo_create(oid, bytea) to lo_from_bytea().	2014-06-12 15:39:09 -04:00
pg_proc_fn.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_range.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_rewrite.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_seclabel.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_shdepend.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_shdescription.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_shseclabel.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_statistic.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_tablespace.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_trigger.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_ts_config.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_ts_config_map.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_ts_dict.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_ts_parser.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_ts_template.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
pg_type.h	pg_lsn should not be marked typispreferred.	2014-05-28 00:26:46 -04:00
pg_type_fn.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
pg_user_mapping.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
storage.h	Update copyright for 2014	2014-01-07 16:05:30 -05:00
storage_xlog.h	Change the signature of rm_desc so that it's passed a XLogRecord.	2014-06-14 10:46:48 +03:00
toasting.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
unused_oids	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00