On Mon, 2005-10-31 at 16:12, Tom Lane wrote: > Scott Marlowe <smarlowe@xxxxxxxxxxxxxxxxx> writes: > > I was mainly wondering if that behaviour had changed, if, when the data > > are released, they are still held in shared memory until forced out by > > newer / more popular data. Which would make the buffer pool a real > > cache. Oh, sorry. I Was under the impression that once it wasn't needed the buffers just dropped the data completely. Thanks ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match