Обсуждение: Referencing Serial Type as Foreign Key
Don't know why I've not come across this before, but I have now. In a table definition I reference the primary key of another table. That key is of datatype SERIAL. In the referencing table, do I define the column as col_name INTEGER REFERENCES other-table (primary_key_field), or is the datatype SERIAL because that's what the referenced primary_key_field is? Thanks, Rich -- Dr. Richard B. Shepard, President Applied Ecosystem Services, Inc. (TM) <http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863
Rich Shepard wrote: > Don't know why I've not come across this before, but I have now. > > In a table definition I reference the primary key of another table. That > key is of datatype SERIAL. In the referencing table, do I define the column > as > > col_name INTEGER REFERENCES other-table (primary_key_field), > > or is the datatype SERIAL because that's what the referenced > primary_key_field is? Serial is a psuedo type to integer/big (depending on the type of serial). What you have above should work fine. SIncerely, Joshua D. Drake > > Thanks, > > Rich > -- Your PostgreSQL solutions company - Command Prompt, Inc. 1.800.492.2240 PostgreSQL Replication, Consulting, Custom Programming, 24x7 support Managed Services, Shared and Dedicated Hosting Co-Authors: plPHP, plPerlNG - http://www.commandprompt.com/
On Fri, 3 Jun 2005, Joshua D. Drake wrote: > Serial is a psuedo type to integer/big (depending on the type of serial). Josh, That's what I thought. > What you have above should work fine. OK. Many thanks, Rich -- Dr. Richard B. Shepard, President Applied Ecosystem Services, Inc. (TM) <http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863