On Tue, Sep 14, 2004 at 01:33:32PM -0700, Joshua D. Drake wrote: > You can not currently change the data type with alter table.
... but you can add a new column with the desired type, UPDATE it with the transformed data, and the DROP the old column. > Ying Lu wrote: > >I have a question about alter a column's type in a postgreSQL table. > > > >For example, I have 10, 000 records in a table name "test", I'd like to > >change column "machineID" type from integer to varchar. I am looking for > >something like: > > > >alter table test alter column machineID ... ... varchar -- Alvaro Herrera (<alvherre[a]dcc.uchile.cl>) "Escucha y olvidarás; ve y recordarás; haz y entenderás" (Confucio) ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html