clause being added to a particular restriction-clause list is redundant with those already in the list. This avoids useless work at runtime, and (perhaps more importantly) keeps the selectivity estimation routines from generating too-small estimates of numbers of output rows. Also some minor improvements in OPTIMIZER_DEBUG displays. |
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.. | ||
_deadcode | ||
Makefile | ||
allpaths.c | ||
clausesel.c | ||
costsize.c | ||
indxpath.c | ||
joinpath.c | ||
joinrels.c | ||
orindxpath.c | ||
pathkeys.c | ||
tidpath.c |