updating derived classes
От | Ami Ganguli |
---|---|
Тема | updating derived classes |
Дата | |
Msg-id | 20000705041808.3000.qmail@pb151.postoffice.net обсуждение исходный текст |
Список | pgsql-bugs |
========================================================================= POSTGRESQL BUG REPORT TEMPLATE ======================================================================== Your name : Ami Ganguli Your email address : ami@ganguli.com System Configuration --------------------- Architecture (example: Intel Pentium) : AMD Athlon Operating System (example: Linux 2.0.26 ELF) : Linux 2.2.16 ELF PostgreSQL version (example: PostgreSQL-6.5.1): PostgreSQL-7.0.2 Compiler used (example: gcc 2.8.0) : not sure (from RPM) Please enter a FULL description of your problem: ------------------------------------------------ When UPDATING a table that has derived classes the documentation states that the plain UPDATE command should update all the derived classes as well. (UPDATE ONLY would update only the specified class.) This doesn't seem to work and I can't figure out how to update both all the derived classes without copious amounts of code. Please describe a way to repeat the problem. Please try to provide a concise reproducible example, if at all possible: ---------------------------------------------------------------------- tester=# create table parent ( a int ); CREATE tester=# create table child ( b int ) inherits ( parent ); CREATE tester=# insert into child values ( 1, 2 ); INSERT 19253 1 tester=# select * from parent*; a --- 1 (1 row) tester=# update parent set a=2; UPDATE 0 tester=# update parent* set a=2; ERROR: parser: parse error at or near "*" If you know how this problem might be fixed, list the solution below: --------------------------------------------------------------------- Thanks for any help with this. I can work around the problem, but the resulting code would be quite unweildy and a bear to maintain. Is there a clean workaround? ... Ami.
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