Re: using serial values
От | Oliver Elphick |
---|---|
Тема | Re: using serial values |
Дата | |
Msg-id | 1045167551.10914.60.camel@linda.lfix.co.uk обсуждение исходный текст |
Ответ на | using serial values (Dennis Gearon <gearond@cvc.net>) |
Список | pgsql-general |
On Thu, 2003-02-13 at 20:03, Dennis Gearon wrote: > How do I get the values for the serial field? Do they automatically insert themselves with a > default if I do not use that field in the INSERT statement? Yes. Or you can explicitly use nextval('sequence_name') to get the next value. > Example: > > create table EntityTypes( > entity_type_id serial NOT NULL CONSTRAINT PK_EntityTypes1 PRIMARY KEY, > entity_type varchar(16) NOT NULL, > CONSTRAINT UC_EntityTypes_Entity_Type1 UNIQUE(entity_type) > ); > > > INSERT INTO EntityTypes( entity_type ) VALUES 'Big Smile, Good Dresser, Easy to Get Along With'; > > Will the above statement causes a row to be inserted with the value > for 'entity_type_id' to be > automatically 1 or 0? Actually it will fail for syntax errors, but once you have corrected those, it will insert a row with entity_type = 1. -- Oliver Elphick Oliver.Elphick@lfix.co.uk Isle of Wight, UK http://www.lfix.co.uk/oliver GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839 932A 614D 4C34 3E1D 0C1C ======================================== "The earth is the LORD'S, and the fullness thereof; the world, and they that dwell therein." Psalms 24:1
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