Horton

Re: SQL:2011 application time

jian he <jian.universality@gmail.com>

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From: jian he <jian.universality@gmail.com>
To: Paul Jungwirth <pj@illuminatedcomputing.com>
Cc: Peter Eisentraut <peter@eisentraut.org>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2023-11-17T07:12:30Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Rename gist stratnum support function

  2. Remove support for temporal RESTRICT foreign keys

  3. Cache NO ACTION foreign keys separately from RESTRICT foreign keys

  4. Fix NO ACTION temporal foreign keys when the referenced endpoints change

  5. Improve whitespace in without_overlaps test

  6. Tests for logical replication with temporal keys

  7. Support for GiST in get_equal_strategy_number()

  8. Make the conditions in IsIndexUsableForReplicaIdentityFull() more explicit

  9. Replace get_equal_strategy_number_for_am() by get_equal_strategy_number()

  10. Improve internal logical replication error for missing equality strategy

  11. Simplify IsIndexUsableForReplicaIdentityFull()

  12. Fix ALTER TABLE / REPLICA IDENTITY for temporal tables

  13. doc: Update pg_constraint.conexclop docs for WITHOUT OVERLAPS

  14. doc: Add PERIOD to ALTER TABLE reference docs

  15. doc: Add WITHOUT OVERLAPS to ALTER TABLE reference docs

  16. Add temporal FOREIGN KEY contraints

  17. Add temporal PRIMARY KEY and UNIQUE constraints

  18. Add stratnum GiST support function

  19. Avoid crashing when a JIT-inlined backend function throws an error.

  20. Revert temporal primary keys and foreign keys

  21. Fix ON CONFLICT DO NOTHING/UPDATE for temporal indexes

  22. Add test for REPLICA IDENTITY with a temporal key

  23. Use half-open interval notation in without_overlaps tests

  24. Use daterange and YMD in without_overlaps tests instead of tsrange.

  25. Rename pg_constraint.conwithoutoverlaps to conperiod

  26. Fix comment on gist_stratnum_btree

  27. Add missing TAP test name

  28. Improve error handling of HMAC computations

  29. Rename functions to avoid future conflicts

based on v17.

begin;
drop table if exists s1;
CREATE TABLE s1 (id numrange, misc int, misc1 text);
create role  test101 login;
grant update, select  on s1 to test101;
insert into s1 VALUES ('[1,1000]',2);
set session authorization test101;
update s1 set id = '[1,1000]';
savepoint sp1;
update s1 FOR PORTION OF id from 10 to 100 set misc1 = 'test';
table s1;
savepoint sp2;
insert into s1 VALUES ('[2,1000]',12);
rollback;

In UPDATE FOR PORTION OF from x to y, if range [x,y) overlaps with the
"source" range
then the UPDATE action would be UPDATE and INSERT.
The above UPDATE FOR PORTION OF query should fail?
UPDATE FOR PORTION OF, may need insert privilege. We also need to document this.
Similarly, we also need to apply the above logic to DELETE FOR PORTION OF.
-------------------------------------------------------
+  <para>
+   If the table has a <link
linkend="ddl-periods-application-periods">range column
+   or <literal>PERIOD</literal></link>, you may supply a

should be

+ <para>
+  If the table has a range column or  <link
linkend="ddl-periods-application-periods">
+  <literal>PERIOD</literal></link>, you may supply a

similarly the doc/src/sgml/ref/delete.sgml the link reference also broken.
--------------------------------------------------------
  <para>
   If the table has a range column or  <link
linkend="ddl-periods-application-periods">
  <literal>PERIOD</literal></link>, you may supply a
   <literal>FOR PORTION OF</literal> clause, and your update will only
affect rows
   that overlap the given interval. Furthermore, if a row's span extends outside
   the <literal>FOR PORTION OF</literal> bounds, then it will be
truncated to fit
   within the bounds, and new rows spanning the "cut off" duration will be
   inserted to preserve the old values.
  </para>

 "given interval", "cut off" these words,  imho, feel not so clear.
We also need a document that:
 "UPDATE FOR PORTION OF" is UPDATE and INSERT (if overlaps).
If the "UPDATE FOR PORTION OF" range overlaps then
It will invoke triggers in the following order: before row update,
before row insert, after row insert. after row update.
---------------------------------------
src/test/regress/sql/for_portion_of.sql
You only need to create two triggers?
since for_portion_of_trigger only raises notice to output the triggers
meta info.

CREATE TRIGGER trg_for_portion_of_before
  BEFORE INSERT OR UPDATE OR DELETE ON for_portion_of_test
  FOR EACH ROW
  EXECUTE FUNCTION for_portion_of_trigger();
CREATE TRIGGER trg_for_portion_of_after
AFTER INSERT OR UPDATE OR DELETE ON for_portion_of_test
FOR EACH ROW
EXECUTE FUNCTION for_portion_of_trigger();