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42 lines
1000 B
C++
42 lines
1000 B
C++
/*
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* Copyright (C) 2014-present ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: (LicenseRef-ScyllaDB-Source-Available-1.1 and Apache-2.0)
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*/
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#pragma once
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#include "aggregate_function.hh"
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namespace cql3 {
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namespace functions {
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/// Factory methods for aggregate functions.
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namespace aggregate_fcts {
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static const sstring COUNT_ROWS_FUNCTION_NAME = "countRows";
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/// The function used to count the number of rows of a result set. This function is called when COUNT(*) or COUNT(1)
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/// is specified.
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shared_ptr<aggregate_function>
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make_count_rows_function();
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/// The same as `make_max_function()' but with type provided in runtime.
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shared_ptr<aggregate_function>
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make_max_function(data_type io_type);
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/// The same as `make_min_function()' but with type provided in runtime.
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shared_ptr<aggregate_function>
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make_min_function(data_type io_type);
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/// count(col) function for the specified type
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shared_ptr<aggregate_function> make_count_function(data_type input_type);
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}
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}
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}
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