On Mon, 2005-07-25 at 16:17, Ed L. wrote: > Can someone help find (or create) a client/server compatibility > matrix that shows which client versions are compatible with > which server versions? For example, > > server: 7.1.2 7.2.1 7.2.2 7.2.3 ... > > client > ====== > 7.1.2 Yes No No No ... > 7.2.1 No > 7.2.2 No > 7.2.3 No > 7.3 ... > 7.3.1 > ... > > I'd be happy to contribute it to the docs. In version 7.3, the support for the pgsql V 6.2 FE/BE protocol was removed. So, what you might want to do is look for which versions of the FE/BE protocol have been added over time. Basically, the server will fall back to whatever version it has to in order to communicate, and after V 7.3, the oldest clients, the ones written with the release of 6.2 would now fail. So, the chart, for versions 6.3 and up would be kind boring on a Yes No basis. So, I'd toss in the FE/BE versions. I don't have that real handy, but Tom or Bruce probably know (mostly) all that off the top of their heads. ---------------------------(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