ClickHouse

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Introduce uniqCombined64() to get sane results for cardinality > UINT_MAX By default uniqCombined() uses 32-bit hash for all types except String, so this means that you cannot use uniqCombined() with i.e UInt64 and cardinality > UINT_MAX, although you can use uniqCombined(toString()) and this will lead to 64-bit hash, but will not have good performance. So uniqCombined64() had been introduced to fix this. Requires: #7213 2019-10-07 21:44:37 +00:00			`10021957`
			`10021969`