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Add age() function
This commit is contained in:
Roman Vasin
parent
8860550e87
commit
1d8e7728e1
303
src/Functions/age.cpp
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303
src/Functions/age.cpp
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#include <DataTypes/DataTypeDateTime.h>
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#include <DataTypes/DataTypeDateTime64.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <Columns/ColumnString.h>
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#include <Columns/ColumnsDateTime.h>
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#include <Columns/ColumnsNumber.h>
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#include <Columns/ColumnDecimal.h>
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#include <Functions/IFunction.h>
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#include <Functions/FunctionHelpers.h>
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#include <Functions/FunctionFactory.h>
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#include <Functions/extractTimeZoneFromFunctionArguments.h>
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#include <Functions/DateTimeTransforms.h>
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#include <Functions/TransformDateTime64.h>
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#include <Common/IntervalKind.h>
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#include <IO/WriteHelpers.h>
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#include <base/find_symbols.h>
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#include <type_traits>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
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extern const int ILLEGAL_TYPE_OF_ARGUMENT;
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extern const int ILLEGAL_COLUMN;
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extern const int BAD_ARGUMENTS;
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}
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namespace
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{
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/** age('unit', t1, t2, [timezone])
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* t1 and t2 can be Date or DateTime
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*
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* If timezone is specified, it applied to both arguments.
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* If not, timezones from datatypes t1 and t2 are used.
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* If that timezones are not the same, the result is unspecified.
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*
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* Timezone matters because days can have different length.
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*/
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class FunctionAge : public IFunction
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{
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private:
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mutable Int32 UnitDivisor;
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public:
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static constexpr auto name = "age";
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static FunctionPtr create(ContextPtr) { return std::make_shared<FunctionAge>(); }
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String getName() const override
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{
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return name;
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}
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bool isVariadic() const override { return true; }
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bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
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size_t getNumberOfArguments() const override { return 0; }
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DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
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{
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if (arguments.size() != 3 && arguments.size() != 4)
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throw Exception(ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH,
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"Number of arguments for function {} doesn't match: passed {}, should be 3 or 4",
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getName(), arguments.size());
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if (!isString(arguments[0]))
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throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"First argument for function {} (unit) must be String",
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getName());
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if (!isDate(arguments[1]) && !isDate32(arguments[1]) && !isDateTime(arguments[1]) && !isDateTime64(arguments[1]))
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throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"Second argument for function {} must be Date, Date32, DateTime or DateTime64",
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getName());
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if (!isDate(arguments[2]) && !isDate32(arguments[2]) && !isDateTime(arguments[2]) && !isDateTime64(arguments[2]))
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throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"Third argument for function {} must be Date, Date32, DateTime or DateTime64",
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getName()
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);
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if (arguments.size() == 4 && !isString(arguments[3]))
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throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"Fourth argument for function {} (timezone) must be String",
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getName());
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return std::make_shared<DataTypeInt64>();
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}
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bool useDefaultImplementationForConstants() const override { return true; }
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ColumnNumbers getArgumentsThatAreAlwaysConstant() const override { return {0, 3}; }
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override
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{
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const auto * unit_column = checkAndGetColumnConst<ColumnString>(arguments[0].column.get());
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if (!unit_column)
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throw Exception(ErrorCodes::ILLEGAL_COLUMN,
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"First argument for function {} must be constant String",
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getName());
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String unit = Poco::toLower(unit_column->getValue<String>());
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const IColumn & x = *arguments[1].column;
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const IColumn & y = *arguments[2].column;
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size_t rows = input_rows_count;
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auto res = ColumnInt64::create(rows);
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const auto & timezone_x = extractTimeZoneFromFunctionArguments(arguments, 3, 1);
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const auto & timezone_y = extractTimeZoneFromFunctionArguments(arguments, 3, 2);
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if (unit == "year" || unit == "yy" || unit == "yyyy")
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UnitDivisor = IntervalKind(IntervalKind::Year).toAvgSeconds();
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else if (unit == "quarter" || unit == "qq" || unit == "q")
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UnitDivisor = IntervalKind(IntervalKind::Quarter).toAvgSeconds();
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else if (unit == "month" || unit == "mm" || unit == "m")
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UnitDivisor = IntervalKind(IntervalKind::Month).toAvgSeconds();
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else if (unit == "week" || unit == "wk" || unit == "ww")
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UnitDivisor = IntervalKind(IntervalKind::Week).toAvgSeconds();
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else if (unit == "day" || unit == "dd" || unit == "d")
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UnitDivisor = IntervalKind(IntervalKind::Day).toAvgSeconds();
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else if (unit == "hour" || unit == "hh" || unit == "h")
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UnitDivisor = IntervalKind(IntervalKind::Hour).toAvgSeconds();
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else if (unit == "minute" || unit == "mi" || unit == "n")
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UnitDivisor = IntervalKind(IntervalKind::Minute).toAvgSeconds();
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else if (unit == "second" || unit == "ss" || unit == "s")
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UnitDivisor = 1;
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else
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throw Exception(ErrorCodes::BAD_ARGUMENTS,
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"Function {} does not support '{}' unit", getName(), unit);
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dispatchForColumns<ToRelativeSecondNumImpl<ResultPrecision::Extended>>(x, y, timezone_x, timezone_y, res->getData());
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return res;
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}
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private:
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template <typename Transform>
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void dispatchForColumns(
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const IColumn & x, const IColumn & y,
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const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
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ColumnInt64::Container & result) const
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{
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if (const auto * x_vec_16 = checkAndGetColumn<ColumnDate>(&x))
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dispatchForSecondColumn<Transform>(*x_vec_16, y, timezone_x, timezone_y, result);
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else if (const auto * x_vec_32 = checkAndGetColumn<ColumnDateTime>(&x))
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dispatchForSecondColumn<Transform>(*x_vec_32, y, timezone_x, timezone_y, result);
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else if (const auto * x_vec_32_s = checkAndGetColumn<ColumnDate32>(&x))
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dispatchForSecondColumn<Transform>(*x_vec_32_s, y, timezone_x, timezone_y, result);
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else if (const auto * x_vec_64 = checkAndGetColumn<ColumnDateTime64>(&x))
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dispatchForSecondColumn<Transform>(*x_vec_64, y, timezone_x, timezone_y, result);
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else if (const auto * x_const_16 = checkAndGetColumnConst<ColumnDate>(&x))
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dispatchConstForSecondColumn<Transform>(x_const_16->getValue<UInt16>(), y, timezone_x, timezone_y, result);
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else if (const auto * x_const_32 = checkAndGetColumnConst<ColumnDateTime>(&x))
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dispatchConstForSecondColumn<Transform>(x_const_32->getValue<UInt32>(), y, timezone_x, timezone_y, result);
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else if (const auto * x_const_32_s = checkAndGetColumnConst<ColumnDate32>(&x))
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dispatchConstForSecondColumn<Transform>(x_const_32_s->getValue<Int32>(), y, timezone_x, timezone_y, result);
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else if (const auto * x_const_64 = checkAndGetColumnConst<ColumnDateTime64>(&x))
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dispatchConstForSecondColumn<Transform>(x_const_64->getValue<DecimalField<DateTime64>>(), y, timezone_x, timezone_y, result);
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else
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throw Exception(ErrorCodes::ILLEGAL_COLUMN,
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"Illegal column for first argument of function {}, must be Date, Date32, DateTime or DateTime64",
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getName());
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}
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template <typename Transform, typename LeftColumnType>
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void dispatchForSecondColumn(
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const LeftColumnType & x, const IColumn & y,
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const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
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ColumnInt64::Container & result) const
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{
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if (const auto * y_vec_16 = checkAndGetColumn<ColumnDate>(&y))
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vectorVector<Transform>(x, *y_vec_16, timezone_x, timezone_y, result);
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else if (const auto * y_vec_32 = checkAndGetColumn<ColumnDateTime>(&y))
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vectorVector<Transform>(x, *y_vec_32, timezone_x, timezone_y, result);
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else if (const auto * y_vec_32_s = checkAndGetColumn<ColumnDate32>(&y))
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vectorVector<Transform>(x, *y_vec_32_s, timezone_x, timezone_y, result);
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else if (const auto * y_vec_64 = checkAndGetColumn<ColumnDateTime64>(&y))
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vectorVector<Transform>(x, *y_vec_64, timezone_x, timezone_y, result);
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else if (const auto * y_const_16 = checkAndGetColumnConst<ColumnDate>(&y))
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vectorConstant<Transform>(x, y_const_16->getValue<UInt16>(), timezone_x, timezone_y, result);
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else if (const auto * y_const_32 = checkAndGetColumnConst<ColumnDateTime>(&y))
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vectorConstant<Transform>(x, y_const_32->getValue<UInt32>(), timezone_x, timezone_y, result);
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else if (const auto * y_const_32_s = checkAndGetColumnConst<ColumnDate32>(&y))
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vectorConstant<Transform>(x, y_const_32_s->getValue<Int32>(), timezone_x, timezone_y, result);
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else if (const auto * y_const_64 = checkAndGetColumnConst<ColumnDateTime64>(&y))
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vectorConstant<Transform>(x, y_const_64->getValue<DecimalField<DateTime64>>(), timezone_x, timezone_y, result);
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else
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throw Exception(ErrorCodes::ILLEGAL_COLUMN,
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"Illegal column for second argument of function {}, must be Date, Date32, DateTime or DateTime64",
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getName());
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}
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template <typename Transform, typename T1>
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void dispatchConstForSecondColumn(
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T1 x, const IColumn & y,
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const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
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ColumnInt64::Container & result) const
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{
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if (const auto * y_vec_16 = checkAndGetColumn<ColumnDate>(&y))
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constantVector<Transform>(x, *y_vec_16, timezone_x, timezone_y, result);
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else if (const auto * y_vec_32 = checkAndGetColumn<ColumnDateTime>(&y))
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constantVector<Transform>(x, *y_vec_32, timezone_x, timezone_y, result);
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else if (const auto * y_vec_32_s = checkAndGetColumn<ColumnDate32>(&y))
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constantVector<Transform>(x, *y_vec_32_s, timezone_x, timezone_y, result);
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else if (const auto * y_vec_64 = checkAndGetColumn<ColumnDateTime64>(&y))
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constantVector<Transform>(x, *y_vec_64, timezone_x, timezone_y, result);
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else
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throw Exception(ErrorCodes::ILLEGAL_COLUMN,
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"Illegal column for second argument of function {}, must be Date, Date32, DateTime or DateTime64",
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getName());
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}
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template <typename Transform, typename LeftColumnType, typename RightColumnType>
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void vectorVector(
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const LeftColumnType & x, const RightColumnType & y,
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const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
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ColumnInt64::Container & result) const
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{
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const auto & x_data = x.getData();
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const auto & y_data = y.getData();
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const auto transform_x = TransformDateTime64<Transform>(getScale(x));
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const auto transform_y = TransformDateTime64<Transform>(getScale(y));
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for (size_t i = 0, size = x.size(); i < size; ++i)
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result[i] = calculate(transform_x, transform_y, x_data[i], y_data[i], timezone_x, timezone_y);
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}
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template <typename Transform, typename LeftColumnType, typename T2>
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void vectorConstant(
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const LeftColumnType & x, T2 y,
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const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
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ColumnInt64::Container & result) const
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{
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const auto & x_data = x.getData();
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const auto transform_x = TransformDateTime64<Transform>(getScale(x));
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const auto transform_y = TransformDateTime64<Transform>(getScale(y));
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const auto y_value = stripDecimalFieldValue(y);
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for (size_t i = 0, size = x.size(); i < size; ++i)
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result[i] = calculate(transform_x, transform_y, x_data[i], y_value, timezone_x, timezone_y);
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}
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template <typename Transform, typename T1, typename RightColumnType>
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void constantVector(
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T1 x, const RightColumnType & y,
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const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
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ColumnInt64::Container & result) const
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{
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const auto & y_data = y.getData();
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const auto transform_x = TransformDateTime64<Transform>(getScale(x));
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const auto transform_y = TransformDateTime64<Transform>(getScale(y));
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const auto x_value = stripDecimalFieldValue(x);
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for (size_t i = 0, size = y.size(); i < size; ++i)
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result[i] = calculate(transform_x, transform_y, x_value, y_data[i], timezone_x, timezone_y);
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}
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template <typename TransformX, typename TransformY, typename T1, typename T2>
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Int64 calculate(const TransformX & transform_x, const TransformY & transform_y, T1 x, T2 y, const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y) const
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{
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Int64 res_y = static_cast<Int64>(transform_y.execute(y, timezone_y));
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Int64 res_x = static_cast<Int64>(transform_x.execute(x, timezone_x));
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return (res_y - res_x) / UnitDivisor;
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// return static_cast<Int64>(transform_y.execute(y, timezone_y))
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// - static_cast<Int64>(transform_x.execute(x, timezone_x));
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}
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template <typename T>
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static UInt32 getScale(const T & v)
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{
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if constexpr (std::is_same_v<T, ColumnDateTime64>)
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return v.getScale();
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else if constexpr (std::is_same_v<T, DecimalField<DateTime64>>)
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return v.getScale();
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return 0;
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}
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template <typename T>
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static auto stripDecimalFieldValue(T && v)
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{
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if constexpr (std::is_same_v<std::decay_t<T>, DecimalField<DateTime64>>)
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return v.getValue();
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else
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return v;
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}
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};
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}
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REGISTER_FUNCTION(Age)
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{
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factory.registerFunction<FunctionAge>({}, FunctionFactory::CaseInsensitive);
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}
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}
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