When comparing row values that are sub-selects, do not consider the collation sequences of the expressions returned by the sub-select when determining the collation sequences to use for the comparisons. i.e. in "(a, b)=(SELECT c, d)", do not consider the collation sequences of "c" or "d". Fix for problem [forum:/info/2026-08-09T09:33:49Z | 2026-08-09T09:33:49Z].