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Merge pull request #4000 from housepower/feature/gccHash
Add gccHash function
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commit
0648088ff0
@ -28,6 +28,7 @@ void registerFunctionsHashing(FunctionFactory & factory)
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factory.registerFunction<FunctionMurmurHash3_32>();
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factory.registerFunction<FunctionMurmurHash3_64>();
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factory.registerFunction<FunctionMurmurHash3_128>();
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factory.registerFunction<FunctionGccMurmurHash>();
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#if USE_XXHASH
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factory.registerFunction<FunctionXxHash32>();
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@ -257,6 +257,25 @@ struct MurmurHash2Impl64
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static constexpr bool use_int_hash_for_pods = false;
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};
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/// To be compatible with gcc: https://github.com/gcc-mirror/gcc/blob/41d6b10e96a1de98e90a7c0378437c3255814b16/libstdc%2B%2B-v3/include/bits/functional_hash.h#L191
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struct GccMurmurHashImpl
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{
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static constexpr auto name = "gccMurmurHash";
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using ReturnType = UInt64;
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static UInt64 apply(const char * data, const size_t size)
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{
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return MurmurHash64A(data, size, 0xc70f6907UL);
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}
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static UInt64 combineHashes(UInt64 h1, UInt64 h2)
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{
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return IntHash64Impl::apply(h1) ^ h2;
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}
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static constexpr bool use_int_hash_for_pods = false;
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};
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struct MurmurHash3Impl32
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{
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static constexpr auto name = "murmurHash3_32";
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@ -1070,6 +1089,7 @@ using FunctionFarmHash64 = FunctionAnyHash<ImplFarmHash64>;
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using FunctionMetroHash64 = FunctionAnyHash<ImplMetroHash64>;
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using FunctionMurmurHash2_32 = FunctionAnyHash<MurmurHash2Impl32>;
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using FunctionMurmurHash2_64 = FunctionAnyHash<MurmurHash2Impl64>;
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using FunctionGccMurmurHash = FunctionAnyHash<GccMurmurHashImpl>;
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using FunctionMurmurHash3_32 = FunctionAnyHash<MurmurHash3Impl32>;
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using FunctionMurmurHash3_64 = FunctionAnyHash<MurmurHash3Impl64>;
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using FunctionMurmurHash3_128 = FunctionStringHashFixedString<MurmurHash3Impl128>;
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@ -22,5 +22,8 @@
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11303473983767132390
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956517343494314387
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956517343494314387
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9631199822919835226
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4334672815104069193
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4334672815104069193
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6145F501578671E2877DBA2BE487AF7E
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16FE7483905CCE7A85670E43E4678877
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@ -28,5 +28,10 @@ SELECT murmurHash3_64('foo');
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SELECT murmurHash3_64('\x01');
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SELECT murmurHash3_64(1);
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SELECT gccMurmurHash('foo');
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SELECT gccMurmurHash('\x01');
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SELECT gccMurmurHash(1);
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SELECT hex(murmurHash3_128('foo'));
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SELECT hex(murmurHash3_128('\x01'));
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@ -13,3 +13,6 @@
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8163029322371165472
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8788309436660676487
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236561483980029756
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12384823029245979431
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4507350192761038840
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1188926775431157506
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@ -17,3 +17,7 @@ SELECT murmurHash2_64(('a', [1, 2, 3], 4, (4, ['foo', 'bar'], 1, (1, 2))));
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SELECT murmurHash3_64(1, 2, 3);
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SELECT murmurHash3_64(1, 3, 2);
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SELECT murmurHash3_64(('a', [1, 2, 3], 4, (4, ['foo', 'bar'], 1, (1, 2))));
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SELECT gccMurmurHash(1, 2, 3);
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SELECT gccMurmurHash(1, 3, 2);
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SELECT gccMurmurHash(('a', [1, 2, 3], 4, (4, ['foo', 'bar'], 1, (1, 2))));
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