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Andrey Mironov 2015-10-09 17:52:45 +03:00
parent 4e66eb2884
commit d5caf72ca7
1 changed files with 5 additions and 0 deletions
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5
dbms/include/DB/Storages/MergeTree/MergeTreeWhereOptimizer.h
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@ -225,6 +225,11 @@ private:
std::size_t getIdentifiersColumnSize(const IdentifierNameSet & identifiers) const std::size_t getIdentifiersColumnSize(const IdentifierNameSet & identifiers) const
{ {
/** for expressions containing no columns (or where columns could not be determined otherwise) assume maximum
* possible size so they do not have priority in eligibility over other expressions. */
if (identifiers.empty())
return std::numeric_limits<std::size_t>::max();
std::size_t size{}; std::size_t size{};
for (const auto & identifier : identifiers) for (const auto & identifier : identifiers)