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authorTom Lane2000-05-31 15:38:53 +0000
committerTom Lane2000-05-31 15:38:53 +0000
commitcbf503180fda16cd4688ddfa67b6ea2b6eafef25 (patch)
tree3592df3d277383ce2cff38047647103decc3bfd3 /doc/src
parent6a68f42648f54690ad5b5ae6fb9104e86e15f0f1 (diff)
Tweak recognition of range-clause pairs so that 'var > $1 AND var < $2'
(ie, parameters instead of consts) will be treated as a range query. We do not know the actual selectivities involved, but it seems like a good idea to use a smaller estimate than we would use for two unrelated inequalities.
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