Re: [QUESTIONS] Arrays (inserting and removing)
От | Bryan Basham |
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Тема | Re: [QUESTIONS] Arrays (inserting and removing) |
Дата | |
Msg-id | 199801151839.LAA18971@sabrina.secure.bhi.com обсуждение исходный текст |
Ответы |
Re: [HACKERS] Re: [QUESTIONS] Arrays (inserting and removing)
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Список | pgsql-hackers |
> OIDs are a bastardization of the relational model. If you have to keep > them, then do so, but their use should be SEVERELY discouraged. Explain yourself, please. In my opinion, I view the OID in the same way as I view the SERIAL datatype in Informix. It is usually a primary key field in a table. On an insert, the DBMS will increment the current serial-maximum (for that table) and insert the new serial value into that field; thus creating a unique identifier. There are differences between OID and SERIAL. The main difference is that the OID field (always called 'oid') is always present whereas a DB designer explicitly creates 'id' fields (of SERIAL type). Thus, postgresql treats every table as an object (which is not always the case). Is the SERIAL datatype part of the SQL-92 standard? Does PostgreSQL plan to support SERIAL in the future. This would be an acceptable replacement for the OID. -Bryan Basham
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