ClickHouse/src/Functions/rand64.cpp

#include <Functions/FunctionFactory.h>
#include <Functions/FunctionsRandom.h>

namespace DB
{
namespace
{

struct NameRand64 { static constexpr auto name = "rand64"; };
using FunctionRand64 = FunctionRandom<UInt64, NameRand64>;

}

REGISTER_FUNCTION(Rand64)
{
    factory.registerFunction<FunctionRand64>();
}

}
Every function in its own file, part 8 [#CLICKHOUSE-2] 2018-12-02 01:57:01 +00:00			`#include <Functions/FunctionFactory.h>`
			`#include <Functions/FunctionsRandom.h>`

			`namespace DB`
			`{`
hide symbols in nameless namespace 2020-09-07 18:00:37 +00:00			`namespace`
			`{`
Every function in its own file, part 8 [#CLICKHOUSE-2] 2018-12-02 01:57:01 +00:00
			`struct NameRand64 { static constexpr auto name = "rand64"; };`
			`using FunctionRand64 = FunctionRandom<UInt64, NameRand64>;`

hide symbols in nameless namespace 2020-09-07 18:00:37 +00:00			`}`

Automated function registration Automated register all functions with below naming convention by iterating through the symbols: void DB::registerXXX(DB::FunctionFactory &) 2022-07-04 07:01:39 +00:00			`REGISTER_FUNCTION(Rand64)`
Every function in its own file, part 8 [#CLICKHOUSE-2] 2018-12-02 01:57:01 +00:00			`{`
			`factory.registerFunction<FunctionRand64>();`
			`}`

			`}`