On Jul 13, 2010, at 1:46 PM, Joshua Rubin wrote: > Hi, > > I have two tables each with nearly 300M rows. There is a 1:1 > relationship between the two tables and they are almost always joined > together in queries. The first table has many columns, the second has > a foreign key to the primary key of the first table and one more > column. It is expected that for every row in table1, there is a > corresponding row in table2. We would like to just add the one column > to the first table and drop the second table to allow us to index this > extra column. Stupid question before you do this: is there a reason the design was split like this? For instance, if the table with the id and the single field get updated a lot, while the other table almost never changes, maybe this design isn't so bad. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general