On Mon, Jul 3, 2023 at 7:45 AM Masahiko Sawada <sawada.m...@gmail.com> wrote: > > Commit 89e46da5e5 allowed us to use indexes for searching on REPLICA > IDENTITY FULL tables. The documentation explains: > > When replica identity <quote>full</quote> is specified, > indexes can be used on the subscriber side for searching the rows. Candidate > indexes must be btree, non-partial, and have at least one column reference > (i.e. cannot consist of only expressions). > > To be exact, IIUC the column reference must be on the leftmost column > of indexes. Does it make sense to mention that? >
Yeah, I think it is good to mention that. Accordingly, the comments atop build_replindex_scan_key(), FindUsableIndexForReplicaIdentityFull(), IsIndexOnlyOnExpression() should also be adjusted. -- With Regards, Amit Kapila.
