Re: synonym
| От | Medi Montaseri |
|---|---|
| Тема | Re: synonym |
| Дата | |
| Msg-id | 8078a1730712132350n4ebc2cd3n5824387ad208cc85@mail.gmail.com обсуждение исходный текст |
| Ответ на | synonym (DBA <s.borse@direction.biz>) |
| Ответы |
Re: synonym
|
| Список | pgsql-admin |
PostgreSQL does not support SYNOSYM or ALIAS. Synonym is a non SQL 2003 feature implemented by Microsoft SQL 2005 (I think). While it does provide an interesting abstraction, but due to lack of relational integrity, it can be considered a risk.
That is, you can create a synonym, advertise it to you programmers, the code is written around it, including stored procedures, then one day the backend of this synonym (or link or pointer) is changed/deleted/etc leading to a run time error. I don't even think a prepare would catch that.
It is the same trap as the symbolic links in unix and null pointers in C/C++.
Cheers
Medi
That is, you can create a synonym, advertise it to you programmers, the code is written around it, including stored procedures, then one day the backend of this synonym (or link or pointer) is changed/deleted/etc leading to a run time error. I don't even think a prepare would catch that.
It is the same trap as the symbolic links in unix and null pointers in C/C++.
Cheers
Medi
On Dec 13, 2007 10:39 PM, DBA <s.borse@direction.biz > wrote:
Hi,
Is it possible to create synonym in postgresql?
I am getting error while creating synonym.
ERROR: syntax error at or near "synonym" at character 8
Thanks & Regards,
Suresh
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