Sequences : getting back the nextval() result on an insert
| От | Wim Ceulemans |
|---|---|
| Тема | Sequences : getting back the nextval() result on an insert |
| Дата | |
| Msg-id | 000901bd951c$f3e5d2b0$67faa8c0@aladdin.nice.be обсуждение исходный текст |
| Ответы |
Re: [GENERAL] Sequences : getting back the nextval() result on an insert
Re: [GENERAL] Sequences : getting back the nextval() result on an insert Re: [GENERAL] Sequences : getting back the nextval() result on an insert |
| Список | pgsql-general |
Hi
I am new to this list, but I've carefully searched the archives before posting this question.
I am using JDBC to access postgreSQL 6.3.
If one inserts records using a sequence to generate an auto-increment primary key, then you can get back the result by using "select currval('seq')". There is always a time between the insert and the select to retrieve the newly created primary key. What I do in my application is insert a record and display it in a java swing JTable (including the primary key).
How can I be certain that the primary key I retrieve with select currval('seq') is the one just inserted? Because in heavily loaded multi-user systems someone else can insert a record in the same table between my insert and my select.
Regards
Wim Ceulemans
Nice Software Solutions
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