"Jack Orenstein" <[EMAIL PROTECTED]> writes: > I understand that updating a row of t generates a new row version, and > that different transactions may see different versions of the same > row. > How does versioning work for the index?
Each row version has its own index entry pointing to it. So an update is not a lot different from an insert --- they both generate a full set of index entries. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq