49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#ifndef DORIS_BE_SRC_QUERY_EXPRS_HLL_HASH_FUNCTION_H
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#define DORIS_BE_SRC_QUERY_EXPRS_HLL_HASH_FUNCTION_H
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#include "runtime/primitive_type.h"
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#include "udf/udf.h"
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#include "util/hash_util.hpp"
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#include "exprs/anyval_util.h"
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#include "runtime/datetime_value.h"
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namespace doris {
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class Expr;
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class OpcodeRegistry;
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class TupleRow;
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class HllHashFunctions {
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public:
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static void init();
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static StringVal hll_hash(doris_udf::FunctionContext* ctx,
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const doris_udf::StringVal& dest_base);
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static BigIntVal hll_cardinality(doris_udf::FunctionContext* ctx,
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const doris_udf::HllVal& dest_base);
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static StringVal create_string_result(doris_udf::FunctionContext* ctx,
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const StringVal& str, const bool is_null);
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static const int HLL_INIT_EXPLICT_SET_SIZE;
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static const int HLL_EMPTY_SET_SIZE;
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};
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}
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#endif
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