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This commit is contained in:
Alexey Milovidov 2020-06-20 09:41:09 +03:00
parent f27ae6a12a
commit 71d907129c
1 changed files with 2 additions and 1 deletions
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3
src/Functions/FunctionsComparison.h
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@ -1128,7 +1128,8 @@ public:
const DataTypePtr & right_type = col_with_type_and_name_right.type;
/// The case when arguments are the same (tautological comparison). Return constant.
/// NOTE: Nullable types are special case. (BTW, this function use default implementation for Nullable, so Nullable types cannot be here. Check just in case.)
/// NOTE: Nullable types are special case.
/// (BTW, this function use default implementation for Nullable, so Nullable types cannot be here. Check just in case.)
/// NOTE: We consider NaN comparison to be implementation specific (and in our implementation NaNs are sometimes equal sometimes not).
if (left_type->equals(*right_type) && !left_type->isNullable() && col_left_untyped == col_right_untyped)
{