#259 Successive UPDATEs using WHERE CURRENT OF does not work

[Abbas Butt]

Successive UPDATEs using WHERE CURRENT OF or a DELETE followed by an UPDATE does not work because the first UPDATE changes the ctid.
This limitation can be solved using UPDATE/DELETE RETURNING ctid, however RETURNING is not yet supported in XC.
The test case involved here is portals.sql
There are a number of test cases failing in portals.sql because of this limitation.

[Koichi Suzuki]

Q2, part of WHERE CURRENT OF work.