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Tom Lane fe30e7ebfa Allow ALTER TYPE to change some properties of a base type. 
Specifically, this patch allows ALTER TYPE to:
* Change the default TOAST strategy for a toastable base type;
* Promote a non-toastable type to toastable;
* Add/remove binary I/O functions for a type;
* Add/remove typmod I/O functions for a type;
* Add/remove a custom ANALYZE statistics functions for a type.

The first of these can be done by the type's owner; all the others
require superuser privilege since misuse could cause problems.

The main motivation for this patch is to allow extensions to
upgrade the feature sets of their data types, so the set of
alterable properties is biased towards that use-case.  However
it's also true that changing some other properties would be
a lot harder, as they get baked into physical storage and/or
stored expressions that depend on the type.

Along the way, refactor GenerateTypeDependencies() to make it easier
to call, refactor DefineType's volatility checks so they can be shared
by AlterType, and teach typcache.c that it might have to reload data
from the type's pg_type row, a scenario it never handled before.
Also rearrange alter_type.sgml a bit for clarity (put the
composite-type operations together).

Tomas Vondra and Tom Lane

Discussion: https://postgr.es/m/20200228004440.b23ein4qvmxnlpht@development
2020-03-06 12:19:29 -05:00
..
.gitignore Add a SECURITY LABEL command. 2010-09-27 20:55:27 -04:00
advisory_lock.sql Add transaction-level advisory locks. 2011-02-18 14:05:12 +09:00
aggregates.sql Test GROUP BY matching of join columns that are type-coerced by USING. 2020-01-01 19:31:41 -05:00
alter_generic.sql Add equalimage B-Tree support functions. 2020-02-26 11:28:25 -08:00
alter_operator.sql Avoid unnecessary use of pg_strcasecmp for already-downcased identifiers. 2018-01-26 18:25:14 -05:00
alter_table.sql Force tuple conversion when the source has missing attributes. 2020-02-05 20:21:20 +00:00
amutils.sql Add support for nearest-neighbor (KNN) searches to SP-GiST 2018-09-19 01:54:10 +03:00
arrays.sql Improve expression evaluation test coverage. 2017-03-11 15:41:34 -08:00
async.sql Add new function pg_notification_queue_usage. 2015-07-17 09:12:03 -04:00
bit.sql Fix bitshiftright()'s zero-padding some more. 2019-10-04 10:34:40 -04:00
bitmapops.sql Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
boolean.sql Expand AND/OR regression tests around NULL handling. 2018-03-13 16:12:31 -07:00
box.sql Add support for <-> (box, point) operator to SP-GiST box_ops 2019-07-14 15:09:23 +03:00
brin.sql Add BRIN test case 2020-01-22 18:37:39 -03:00
btree_index.sql Add deduplication to nbtree. 2020-02-26 13:05:30 -08:00
case.sql Fix interaction of CASE and ArrayCoerceExpr. 2018-10-30 15:26:11 -04:00
char.sql Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
circle.sql Back off output precision in circle.sql regression test. 2019-08-25 12:14:50 -04:00
cluster.sql Fix CLUSTER on expression indexes. 2019-10-15 10:40:13 -07:00
collate.icu.utf8.sql Fix random regression failure in test case "collate.icu.utf8" 2019-08-14 13:37:48 +09:00
collate.linux.utf8.sql Allow to_date/to_timestamp to recognize non-English month/day names. 2020-03-03 11:06:47 -05:00
collate.sql Un-hide most cascaded-drop details in regression test results. 2019-03-24 19:15:37 -04:00
combocid.sql Fix locking a tuple updated by an aborted (sub)transaction 2016-09-09 15:54:29 -03:00
comments.sql Implement nested block comments in the backend and in psql. 2000-07-14 15:43:57 +00:00
conversion.sql Establish conventions about global object names used in regression tests. 2016-07-17 18:42:43 -04:00
copy2.sql Allow COPY FROM to filter data using WHERE conditions 2019-01-20 00:22:14 +01:00
copydml.sql COPY (INSERT/UPDATE/DELETE .. RETURNING ..) 2015-11-27 19:11:22 +03:00
copyselect.sql Have \copy go through SendQuery 2012-01-25 18:22:00 -03:00
create_aggregate.sql Implement OR REPLACE option for CREATE AGGREGATE. 2019-03-19 01:16:50 +00:00
create_am.sql Stop using spelling "nonexistant". 2019-06-08 10:12:26 -07:00
create_cast.sql Make CREATE TYPE print warnings if a datatype's I/O functions are volatile. 2014-11-05 11:44:06 -05:00
create_function_3.sql Un-hide most cascaded-drop details in regression test results. 2019-03-24 19:15:37 -04:00
create_index.sql Preserve pg_index.indisclustered across REINDEX CONCURRENTLY 2020-03-03 10:12:28 +09:00
create_index_spgist.sql Provide stable test for NULL-values in KNN SP-GiST 2019-09-20 15:33:45 +03:00
create_misc.sql ANALYZE a_star and its children to avoid plan instability in tests. 2019-09-27 11:28:24 -04:00
create_operator.sql Fix lexing of standard multi-character operators in edge cases. 2018-08-23 21:42:40 +01:00
create_procedure.sql Add collation assignment to CALL statement 2019-02-07 08:25:47 +01:00
create_table.sql Allow whole-row Vars to be used in partitioning expressions. 2019-12-25 15:44:15 -05:00
create_table_like.sql Fix handling of GENERATED columns in CREATE TABLE LIKE INCLUDING DEFAULTS. 2019-09-25 17:30:42 -04:00
create_type.sql Allow ALTER TYPE to change some properties of a base type. 2020-03-06 12:19:29 -05:00
create_view.sql Improve test coverage of ruleutils.c. 2019-12-06 17:40:30 -05:00
date.sql Remove explicit error handling for obsolete date/time values 2019-06-30 10:27:35 +02:00
dbsize.sql Add pg_size_bytes() to parse human-readable size strings. 2016-02-20 09:57:27 +00:00
delete.sql Regression tests for TOAST. 2011-04-25 09:48:10 -04:00
dependency.sql Un-hide most cascaded-drop details in regression test results. 2019-03-24 19:15:37 -04:00
domain.sql Drop no-op CoerceToDomain nodes from expressions at planning time. 2018-12-13 13:24:43 -05:00
drop_if_exists.sql Introduce the 'force' option for the Drop Database command. 2019-11-13 08:25:33 +05:30
drop_operator.sql Fix DROP OPERATOR to reset oprcom/oprnegate links to the dropped operator. 2016-03-25 12:33:16 -04:00
enum.sql Relax transactional restrictions on ALTER TYPE ... ADD VALUE (redux). 2018-10-09 12:51:01 +13:00
equivclass.sql Suppress unnecessary RelabelType nodes in more cases. 2020-02-26 18:14:12 -05:00
errors.sql Remove WITH OIDS support, change oid catalog column visibility. 2018-11-20 16:00:17 -08:00
event_trigger.sql Fix confusion about event trigger vs. plain function in plpgsql. 2020-02-19 14:45:17 -05:00
explain.sql Fix EXPLAIN (SETTINGS) to follow policy about when to print empty fields. 2020-01-26 16:32:19 -05:00
expressions.sql Add some test cases to improve test coverage of parse_expr.c. 2019-07-05 23:56:34 -04:00
fast_default.sql Fix heap_getattr() handling of fast defaults. 2019-02-06 01:09:32 -08:00
float4.sql Improve coverage of utils/float.h 2019-08-28 12:28:16 +09:00
float8.sql Un-hide most cascaded-drop details in regression test results. 2019-03-24 19:15:37 -04:00
foreign_data.sql Fix partitioned index creation with foreign partitions 2019-06-26 18:38:51 -04:00
foreign_key.sql Simplify FK-to-partitioned regression test query 2020-02-20 14:14:20 -03:00
functional_deps.sql Recognize functional dependency on primary keys. This allows a table's 2010-08-07 02:44:09 +00:00
generated.sql ALTER TABLE ... ALTER COLUMN ... DROP EXPRESSION 2020-01-14 13:36:03 +01:00
geometry.sql Add missing commutators for distance operators 2019-07-14 14:55:01 +03:00
gin.sql Avoid full scan of GIN indexes when possible 2020-01-18 01:11:39 +03:00
gist.sql Add support for <-> (box, point) operator to GiST box_ops 2019-07-14 15:09:15 +03:00
groupingsets.sql Add missing (COSTS OFF) to EXPLAIN added in previous commit. 2019-07-25 14:52:36 -07:00
guc.sql Give up on testing guc.c's behavior for "infinity" inputs. 2019-03-11 17:53:09 -04:00
hash_func.sql Introduce 64-bit hash functions with a 64-bit seed. 2017-08-31 22:21:21 -04:00
hash_index.sql Add more tests for reloptions 2017-10-19 14:22:05 +02:00
hash_part.sql Fix failure with textual partition hash keys. 2019-04-15 16:47:09 -04:00
horology.sql Fix an oversight in commit 4c70098ff. 2020-01-23 16:15:32 -05:00
hs_primary_extremes.sql Remove all references to "xlog" from SQL-callable functions in pg_proc. 2017-02-09 15:10:09 -05:00
hs_primary_setup.sql Remove all references to "xlog" from SQL-callable functions in pg_proc. 2017-02-09 15:10:09 -05:00
hs_standby_allowed.sql Allow UNLISTEN in hot-standby mode. 2019-01-25 21:14:49 -05:00
hs_standby_check.sql Allow read only connections during recovery, known as Hot Standby. 2009-12-19 01:32:45 +00:00
hs_standby_disallowed.sql Allow UNLISTEN in hot-standby mode. 2019-01-25 21:14:49 -05:00
hs_standby_functions.sql Remove all references to "xlog" from SQL-callable functions in pg_proc. 2017-02-09 15:10:09 -05:00
identity.sql Clarify behavior of adding and altering a column in same ALTER command. 2020-01-21 16:17:21 -05:00
index_including.sql Fix nbtree high key "continuescan" row compare bug. 2019-03-31 17:24:04 -07:00
index_including_gist.sql Support for INCLUDE attributes in GiST indexes 2019-03-10 11:37:17 +03:00
indexing.sql Fix assertion failure with ALTER TABLE ATTACH PARTITION and indexes 2020-03-03 13:55:41 +09:00
indirect_toast.sql Clean up duplicate table and function names in regression tests. 2018-03-15 17:09:02 -04:00
inet.sql Add sort support routine for the inet data type. 2019-08-01 09:34:14 -07:00
inherit.sql Allow access to child table statistics if user can read parent table. 2019-11-26 14:41:48 -05:00
init_privs.sql Fix typos in comments. 2017-02-06 11:33:58 +02:00
insert.sql Add tests for error message generation in partition tuple routing 2019-05-06 21:44:24 +09:00
insert_conflict.sql Don't mark partitioned indexes invalid unnecessarily 2018-12-05 13:31:51 -03:00
int2.sql Add documentation and regression tests concerning rounding of numerics. 2015-07-03 17:04:39 -04:00
int4.sql Add functions gcd() and lcm() for integer and numeric types. 2020-01-25 14:00:59 +00:00
int8.sql Add functions gcd() and lcm() for integer and numeric types. 2020-01-25 14:00:59 +00:00
interval.sql Fix integer-overflow edge case detection in interval_mul and pgbench. 2019-11-07 11:22:58 -05:00
join.sql Prevent overly-aggressive collapsing of joins to RTE_RESULT relations. 2019-12-14 13:49:15 -05:00
join_hash.sql Fix representation of hash keys in Hash/HashJoin nodes. 2019-08-02 00:02:46 -07:00
json.sql Remove unnecessary test dependency on the contents of pg_pltemplate. 2019-08-21 10:43:23 -04:00
json_encoding.sql Fix whitespace 2015-10-11 21:44:27 -04:00
jsonb.sql Add a non-strict version of jsonb_set 2020-01-17 11:52:39 +10:30
jsonb_jsonpath.sql Allow to_date/to_timestamp to recognize non-English month/day names. 2020-03-03 11:06:47 -05:00
jsonpath.sql Implement jsonpath .datetime() method 2019-09-25 22:51:51 +03:00
jsonpath_encoding.sql Fix some minor spec-compliance issues in jsonpath lexer. 2019-09-20 14:22:58 -04:00
limit.sql Add regression tests exercising more code paths in nodeLimit.c. 2017-08-11 17:28:01 -04:00
line.sql Improve test coverage of geometric types 2018-09-26 10:45:21 +02:00
lock.sql Make inherited LOCK TABLE perform access permission checks on parent table only. 2020-02-18 13:13:15 +09:00
lseg.sql Improve test coverage of geometric types 2018-09-26 10:45:21 +02:00
macaddr.sql Allow input format xxxx-xxxx-xxxx for macaddr type 2014-10-21 16:16:39 -04:00
macaddr8.sql Add support for EUI-64 MAC addresses as macaddr8 2017-03-15 11:16:25 -04:00
matview.sql Remove useless and rather expensive stanza in matview regression test. 2017-05-03 19:37:01 -04:00
misc_functions.sql Build out the planner support function infrastructure. 2019-02-09 18:32:23 -05:00
misc_sanity.sql Remove WITH OIDS support, change oid catalog column visibility. 2018-11-20 16:00:17 -08:00
money.sql Fix loss of fractional digits for large values in cash_numeric(). 2019-07-26 11:59:00 -04:00
name.sql Introduce parse_ident() 2016-03-18 18:16:14 +03:00
namespace.sql Clean up duplicate role and schema names in regression tests. 2018-03-15 14:00:31 -04:00
numeric.sql Add functions gcd() and lcm() for integer and numeric types. 2020-01-25 14:00:59 +00:00
numeric_big.sql Fix corner-case loss of precision in numeric ln(). 2020-03-01 14:49:25 +00:00
numerology.sql Remove extra newlines at end and beginning of files, add missing newlines 2010-08-19 05:57:36 +00:00
object_address.sql Warn if wal_level is too low when creating a publication. 2019-07-13 10:35:34 +12:00
oid.sql Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
oidjoins.sql Rework the pg_statistic_ext catalog 2019-06-16 01:20:31 +02:00
opr_sanity.sql Remove the "opaque" pseudo-type and associated compatibility hacks. 2020-03-05 15:48:56 -05:00
partition_aggregate.sql Avoid crash in partitionwise join planning under GEQO. 2019-03-30 12:48:32 -04:00
partition_info.sql Fix crash with pg_partition_root 2019-03-22 17:27:38 +09:00
partition_join.sql Clean up some misplaced comments in partition_join.sql regression test. 2019-12-16 17:00:15 +09:00
partition_prune.sql Fix "force_parallel_mode = regress" to work with ANALYZE + VERBOSE. 2019-12-16 20:14:35 -05:00
password.sql Fix use of term "verifier" 2019-10-12 21:41:59 +02:00
path.sql Improve test coverage of geometric types 2018-09-26 10:45:21 +02:00
pg_lsn.sql Add min() and max() aggregates for pg_lsn 2019-07-05 12:21:11 +09:00
plancache.sql Add plan_cache_mode setting 2018-07-16 13:35:41 +02:00
plpgsql.sql Add backend-only appendStringInfoStringQuoted 2019-12-10 17:12:56 -03:00
point.sql Change floating-point output format for improved performance. 2019-02-13 15:20:33 +00:00
polygon.sql Fix double-word typos 2019-06-13 10:03:56 -04:00
polymorphism.sql Fix lexing of standard multi-character operators in edge cases. 2018-08-23 21:42:40 +01:00
portals.sql Fix failure in WHERE CURRENT OF after rewinding the referenced cursor. 2018-09-23 16:05:45 -04:00
portals_p2.sql Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
prepare.sql Add more tests for CREATE TABLE AS with WITH NO DATA 2019-02-07 09:21:57 +09:00
prepared_xacts.sql Remove unnecessary dependency on statement_timeout in prepared_xacts test. 2017-03-13 16:46:32 -04:00
privileges.sql Make inherited LOCK TABLE perform access permission checks on parent table only. 2020-02-18 13:13:15 +09:00
psql.sql Improve coverage of psql for backslash commands with \if and \elif 2019-09-12 10:35:13 +09:00
psql_crosstab.sql Fix incorrect error reporting for duplicate data in \crosstabview. 2016-12-25 16:04:45 -05:00
publication.sql Warn if wal_level is too low when creating a publication. 2019-07-13 10:35:34 +12:00
random.sql Remove extra newlines at end and beginning of files, add missing newlines 2010-08-19 05:57:36 +00:00
rangefuncs.sql Improve the handling of result type coercions in SQL functions. 2020-01-08 11:07:59 -05:00
rangetypes.sql Fix CheckAttributeType's handling of collations for ranges. 2020-01-31 17:03:55 -05:00
regex.linux.utf8.sql Make locale-dependent regex character classes work for large char codes. 2016-09-05 17:06:29 -04:00
regex.sql Fix misoptimization of "{1,1}" quantifiers in regular expressions. 2019-05-12 18:53:38 -04:00
regproc.sql Establish conventions about global object names used in regression tests. 2016-07-17 18:42:43 -04:00
reindex_catalog.sql Remove reindex_catalog test from test schedules. 2019-05-10 12:44:31 -07:00
reloptions.sql Add vacuum_truncate reloption. 2019-04-08 16:43:57 +09:00
replica_identity.sql Remove WITH OIDS support, change oid catalog column visibility. 2018-11-20 16:00:17 -08:00
returning.sql Add support for INSERT ... ON CONFLICT DO NOTHING/UPDATE. 2015-05-08 05:43:10 +02:00
roleattributes.sql Remove WITH OIDS support, change oid catalog column visibility. 2018-11-20 16:00:17 -08:00
rowsecurity.sql Fix usage of whole-row variables in WCO and RLS policy expressions. 2019-09-12 18:29:45 -04:00
rowtypes.sql Allow extracting fields from a ROW() expression in more cases. 2019-10-28 15:08:24 -04:00
rules.sql Improve test coverage of ruleutils.c. 2019-12-06 17:40:30 -05:00
sanity_check.sql Don't create relfilenode for relations without storage 2019-01-04 14:51:17 -03:00
security_label.sql Establish conventions about global object names used in regression tests. 2016-07-17 18:42:43 -04:00
select.sql Make some subquery-using test cases a bit more robust. 2018-10-14 14:02:59 -04:00
select_distinct.sql Disable physical tlist if any Var would need multiple sortgroupref labels. 2016-05-26 14:52:30 -04:00
select_distinct_on.sql Fix assertion failure when a SELECT DISTINCT ON expression is volatile. 2009-09-12 00:04:59 +00:00
select_having.sql Make the behavior of HAVING without GROUP BY conform to the SQL spec. 2005-03-10 23:21:26 +00:00
select_implicit.sql Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
select_into.sql Add more tests for CREATE TABLE AS with WITH NO DATA 2019-02-07 09:21:57 +09:00
select_parallel.sql Don't shut down Gather[Merge] early under Limit. 2019-11-26 08:30:24 +05:30
select_views.sql Avoid locale-dependent output in select_views regression test. 2017-05-28 14:52:18 -04:00
sequence.sql Make command order in test more sensible 2019-10-22 10:35:54 +02:00
spgist.sql Repair double-free in SP-GIST rescan (bug #15378) 2018-09-11 18:14:19 +01:00
stats.sql Partially revert "Insert temporary debugging output in regression tests." 2019-08-11 18:55:32 -04:00
stats_ext.sql Apply multiple multivariate MCV lists when possible 2020-01-13 01:21:17 +01:00
strings.sql Reduce size of backend scanner's tables. 2020-01-13 15:04:31 -05:00
subscription.sql Fix regression tests to use only global names beginning with "regress_". 2019-06-29 11:09:03 -04:00
subselect.sql Correctly re-use hash tables in buildSubPlanHash(). 2020-02-29 13:48:09 -05:00
sysviews.sql Invent pg_hba_file_rules view to show the content of pg_hba.conf. 2017-01-30 18:00:26 -05:00
tablesample.sql Make tablesample work with partitioned tables. 2017-02-24 12:23:28 +05:30
temp.sql Fix misbehavior with expression indexes on ON COMMIT DELETE ROWS tables. 2019-12-01 13:09:26 -05:00
text.sql Move checking an explicit VARIADIC "any" argument into the parser. 2013-07-18 11:52:12 -04:00
tidscan.sql Fix bug in Tid scan. 2020-02-07 22:06:31 +09:00
time.sql Please find attached two patches for documentation and regression tests 2006-07-06 01:46:38 +00:00
timestamp.sql Avoid low-probability regression test failures in timestamp[tz] tests. 2019-12-22 18:00:22 -05:00
timestamptz.sql Avoid low-probability regression test failures in timestamp[tz] tests. 2019-12-22 18:00:22 -05:00
timetz.sql Fix some incorrect parsing of time with time zone strings 2019-08-07 18:16:31 +09:00
transactions.sql Improve new AND CHAIN tests 2019-09-09 10:30:22 +02:00
triggers.sql Record parents of triggers 2020-02-27 13:23:33 -03:00
truncate.sql Fix TRUNCATE .. CASCADE on partitions 2020-02-07 17:09:36 -03:00
tsdicts.sql Validate ispell dictionaries more carefully. 2019-11-02 16:45:32 -04:00
tsearch.sql Avoid full scan of GIN indexes when possible 2020-01-18 01:11:39 +03:00
tsrf.sql Fix handling of targetlist SRFs when scan/join relation is known empty. 2019-03-07 14:22:13 -05:00
tstypes.sql More float test and portability fixes. 2019-02-13 19:35:50 +00:00
tuplesort.sql Try to stabilize results of new tuplesort regression test. 2019-12-14 15:01:56 -05:00
txid.sql Add a txid_status function. 2017-03-24 12:00:53 -04:00
type_sanity.sql Harden tableam against nonexistant / wrong kind of AMs. 2019-04-04 17:39:39 -07:00
typed_table.sql Suppress less info in regression tests using DROP CASCADE. 2017-08-01 16:49:23 -04:00
union.sql Repair issues with faulty generation of merge-append plans. 2019-05-09 16:53:05 -04:00
updatable_views.sql Make rewriter prevent auto-updates on views with conditional INSTEAD rules. 2020-01-14 09:52:21 +00:00
update.sql Fix system column accesses in ON CONFLICT ... RETURNING. 2019-07-24 18:45:58 -07:00
uuid.sql Add gen_random_uuid function 2019-07-14 14:30:27 +02:00
vacuum.sql Allow vacuum command to process indexes in parallel. 2020-01-20 07:57:49 +05:30
varchar.sql Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
window.sql Selectively include window frames in expression walks/mutates. 2019-10-03 10:54:52 +01:00
with.sql Revert MERGE patch 2018-04-12 11:22:56 +01:00
write_parallel.sql Allow DML commands that create tables to use parallel query. 2017-10-05 11:40:48 -04:00
xml.sql Avoid failure when selecting a namespace node in XMLTABLE. 2019-10-25 15:22:45 -04:00
xmlmap.sql Fix cursor_to_xml in tableforest false mode 2017-05-03 21:41:10 -04:00