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Update AggregateFunctionSumMap.h

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alexey-milovidov 2017-10-12 23:49:59 +03:00
parent 1984782321
commit 9eca78273f
1 changed files with 1 additions and 1 deletions
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dbms/src/AggregateFunctions/AggregateFunctionSumMap.h
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@ -31,7 +31,7 @@ struct AggregateFunctionSumMapData
std::map<T, Array> merged_maps;
};
/** Aggregate function, that takes at keast two arguments: keys and values, and as a result, builds a tuple of of at least 2 arrays -
/** Aggregate function, that takes at least two arguments: keys and values, and as a result, builds a tuple of of at least 2 arrays -
* ordered keys and variable number of argument values summed up by corresponding keys.
*
* This function is the most useful when using SummingMergeTree to sum Nested columns, which name ends in "Map".