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Fixed dateDiff for DateTime64

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Added tests that verify fix
- against DateTime64 vals of equal scale
- DateTime64 vs DateTime
- DateTime vs DateTime64
- DateTime64 vs Date
- Date vs DateTime64
This commit is contained in:
Vasily Nemkov 2021-04-09 15:22:35 +03:00
parent 5c91cc3573
commit 4a784bd2e3
3 changed files with 250 additions and 16 deletions
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76
src/Functions/dateDiff.cpp
View File

@ -3,12 +3,14 @@
#include <DataTypes/DataTypesNumber.h> #include <DataTypes/DataTypesNumber.h>
#include <Columns/ColumnString.h> #include <Columns/ColumnString.h>
#include <Columns/ColumnsNumber.h> #include <Columns/ColumnsNumber.h>
#include <Columns/ColumnDecimal.h>
#include <Functions/IFunctionImpl.h> #include <Functions/IFunctionImpl.h>
#include <Functions/FunctionHelpers.h> #include <Functions/FunctionHelpers.h>
#include <Functions/FunctionFactory.h> #include <Functions/FunctionFactory.h>
#include <Functions/extractTimeZoneFromFunctionArguments.h> #include <Functions/extractTimeZoneFromFunctionArguments.h>
#include <Functions/DateTimeTransforms.h> #include <Functions/DateTimeTransforms.h>
#include <Functions/TransformDateTime64.h>
#include <IO/WriteHelpers.h> #include <IO/WriteHelpers.h>
@ -42,6 +44,7 @@ namespace
*/ */
class FunctionDateDiff : public IFunction class FunctionDateDiff : public IFunction
{ {
using ColumnDateTime64 = ColumnDecimal<DateTime64>;
public: public:
static constexpr auto name = "dateDiff"; static constexpr auto name = "dateDiff";
static FunctionPtr create(const Context &) { return std::make_shared<FunctionDateDiff>(); } static FunctionPtr create(const Context &) { return std::make_shared<FunctionDateDiff>(); }
@ -133,17 +136,21 @@ private:
dispatchForSecondColumn<Transform>(*x_vec_16, y, timezone_x, timezone_y, result); dispatchForSecondColumn<Transform>(*x_vec_16, y, timezone_x, timezone_y, result);
else if (const auto * x_vec_32 = checkAndGetColumn<ColumnUInt32>(&x)) else if (const auto * x_vec_32 = checkAndGetColumn<ColumnUInt32>(&x))
dispatchForSecondColumn<Transform>(*x_vec_32, y, timezone_x, timezone_y, result); dispatchForSecondColumn<Transform>(*x_vec_32, y, timezone_x, timezone_y, result);
else if (const auto * x_vec_64 = checkAndGetColumn<ColumnDateTime64>(&x))
dispatchForSecondColumn<Transform>(*x_vec_64, y, timezone_x, timezone_y, result);
else if (const auto * x_const_16 = checkAndGetColumnConst<ColumnUInt16>(&x)) else if (const auto * x_const_16 = checkAndGetColumnConst<ColumnUInt16>(&x))
dispatchConstForSecondColumn<Transform>(x_const_16->getValue<UInt16>(), y, timezone_x, timezone_y, result); dispatchConstForSecondColumn<Transform>(x_const_16->getValue<UInt16>(), y, timezone_x, timezone_y, result);
else if (const auto * x_const_32 = checkAndGetColumnConst<ColumnUInt32>(&x)) else if (const auto * x_const_32 = checkAndGetColumnConst<ColumnUInt32>(&x))
dispatchConstForSecondColumn<Transform>(x_const_32->getValue<UInt32>(), y, timezone_x, timezone_y, result); dispatchConstForSecondColumn<Transform>(x_const_32->getValue<UInt32>(), y, timezone_x, timezone_y, result);
else if (const auto * x_const_64 = checkAndGetColumnConst<ColumnDateTime64>(&x))
dispatchConstForSecondColumn<Transform>(x_const_64->getValue<DecimalField<DateTime64>>(), y, timezone_x, timezone_y, result);
else else
throw Exception("Illegal column for first argument of function " + getName() + ", must be Date or DateTime", ErrorCodes::ILLEGAL_COLUMN); throw Exception("Illegal column for first argument of function " + getName() + ", must be Date, DateTime or DateTime64", ErrorCodes::ILLEGAL_COLUMN);
} }
template <typename Transform, typename T1> template <typename Transform, typename LeftColumnType>
void dispatchForSecondColumn( void dispatchForSecondColumn(
const ColumnVector<T1> & x, const IColumn & y, const LeftColumnType & x, const IColumn & y,
const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y, const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
ColumnInt64::Container & result) const ColumnInt64::Container & result) const
{ {
@ -151,10 +158,14 @@ private:
vectorVector<Transform>(x, *y_vec_16, timezone_x, timezone_y, result); vectorVector<Transform>(x, *y_vec_16, timezone_x, timezone_y, result);
else if (const auto * y_vec_32 = checkAndGetColumn<ColumnUInt32>(&y)) else if (const auto * y_vec_32 = checkAndGetColumn<ColumnUInt32>(&y))
vectorVector<Transform>(x, *y_vec_32, timezone_x, timezone_y, result); vectorVector<Transform>(x, *y_vec_32, timezone_x, timezone_y, result);
else if (const auto * y_vec_64 = checkAndGetColumn<ColumnDateTime64>(&y))
vectorVector<Transform>(x, *y_vec_64, timezone_x, timezone_y, result);
else if (const auto * y_const_16 = checkAndGetColumnConst<ColumnUInt16>(&y)) else if (const auto * y_const_16 = checkAndGetColumnConst<ColumnUInt16>(&y))
vectorConstant<Transform>(x, y_const_16->getValue<UInt16>(), timezone_x, timezone_y, result); vectorConstant<Transform>(x, y_const_16->getValue<UInt16>(), timezone_x, timezone_y, result);
else if (const auto * y_const_32 = checkAndGetColumnConst<ColumnUInt32>(&y)) else if (const auto * y_const_32 = checkAndGetColumnConst<ColumnUInt32>(&y))
vectorConstant<Transform>(x, y_const_32->getValue<UInt32>(), timezone_x, timezone_y, result); vectorConstant<Transform>(x, y_const_32->getValue<UInt32>(), timezone_x, timezone_y, result);
else if (const auto * y_const_64 = checkAndGetColumnConst<ColumnDateTime64>(&y))
vectorConstant<Transform>(x, y_const_64->getValue<DecimalField<DateTime64>>(), timezone_x, timezone_y, result);
else else
throw Exception("Illegal column for second argument of function " + getName() + ", must be Date or DateTime", ErrorCodes::ILLEGAL_COLUMN); throw Exception("Illegal column for second argument of function " + getName() + ", must be Date or DateTime", ErrorCodes::ILLEGAL_COLUMN);
} }
@ -169,49 +180,82 @@ private:
constantVector<Transform>(x, *y_vec_16, timezone_x, timezone_y, result); constantVector<Transform>(x, *y_vec_16, timezone_x, timezone_y, result);
else if (const auto * y_vec_32 = checkAndGetColumn<ColumnUInt32>(&y)) else if (const auto * y_vec_32 = checkAndGetColumn<ColumnUInt32>(&y))
constantVector<Transform>(x, *y_vec_32, timezone_x, timezone_y, result); constantVector<Transform>(x, *y_vec_32, timezone_x, timezone_y, result);
else if (const auto * y_vec_64 = checkAndGetColumn<ColumnDateTime64>(&y))
constantVector<Transform>(x, *y_vec_64, timezone_x, timezone_y, result);
else else
throw Exception("Illegal column for second argument of function " + getName() + ", must be Date or DateTime", ErrorCodes::ILLEGAL_COLUMN); throw Exception("Illegal column for second argument of function " + getName() + ", must be Date or DateTime", ErrorCodes::ILLEGAL_COLUMN);
} }
template <typename Transform, typename T1, typename T2> template <typename Transform, typename LeftColumnType, typename RightColumnType>
void vectorVector( void vectorVector(
const ColumnVector<T1> & x, const ColumnVector<T2> & y, const LeftColumnType & x, const RightColumnType & y,
const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y, const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
ColumnInt64::Container & result) const ColumnInt64::Container & result) const
{ {
const auto & x_data = x.getData(); const auto & x_data = x.getData();
const auto & y_data = y.getData(); const auto & y_data = y.getData();
const auto transform_x = TransformDateTime64<Transform>(getScale(x));
const auto transform_y = TransformDateTime64<Transform>(getScale(y));
for (size_t i = 0, size = x.size(); i < size; ++i) for (size_t i = 0, size = x.size(); i < size; ++i)
result[i] = calculate<Transform>(x_data[i], y_data[i], timezone_x, timezone_y); result[i] = calculate(transform_x, transform_y, x_data[i], y_data[i], timezone_x, timezone_y);
} }
template <typename Transform, typename T1, typename T2> template <typename Transform, typename LeftColumnType, typename T2>
void vectorConstant( void vectorConstant(
const ColumnVector<T1> & x, T2 y, const LeftColumnType & x, T2 y,
const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y, const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
ColumnInt64::Container & result) const ColumnInt64::Container & result) const
{ {
const auto & x_data = x.getData(); const auto & x_data = x.getData();
const auto transform_x = TransformDateTime64<Transform>(getScale(x));
const auto transform_y = TransformDateTime64<Transform>(getScale(y));
const auto y_value = stripDecimalFieldValue(y);
for (size_t i = 0, size = x.size(); i < size; ++i) for (size_t i = 0, size = x.size(); i < size; ++i)
result[i] = calculate<Transform>(x_data[i], y, timezone_x, timezone_y); result[i] = calculate(transform_x, transform_y, x_data[i], y_value, timezone_x, timezone_y);
} }
template <typename Transform, typename T1, typename T2> template <typename Transform, typename T1, typename RightColumnType>
void constantVector( void constantVector(
T1 x, const ColumnVector<T2> & y, T1 x, const RightColumnType & y,
const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y, const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y,
ColumnInt64::Container & result) const ColumnInt64::Container & result) const
{ {
const auto & y_data = y.getData(); const auto & y_data = y.getData();
const auto transform_x = TransformDateTime64<Transform>(getScale(x));
const auto transform_y = TransformDateTime64<Transform>(getScale(y));
const auto x_value = stripDecimalFieldValue(x);
for (size_t i = 0, size = y.size(); i < size; ++i) for (size_t i = 0, size = y.size(); i < size; ++i)
result[i] = calculate<Transform>(x, y_data[i], timezone_x, timezone_y); result[i] = calculate(transform_x, transform_y, x_value, y_data[i], timezone_x, timezone_y);
} }
template <typename Transform, typename T1, typename T2> template <typename TransformX, typename TransformY, typename T1, typename T2>
Int64 calculate(T1 x, T2 y, const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y) const Int64 calculate(const TransformX & transform_x, const TransformY & transform_y, T1 x, T2 y, const DateLUTImpl & timezone_x, const DateLUTImpl & timezone_y) const
{ {
return Int64(Transform::execute(y, timezone_y)) return Int64(transform_y.execute(y, timezone_y))
- Int64(Transform::execute(x, timezone_x)); - Int64(transform_x.execute(x, timezone_x));
}
private:
template <typename T>
static UInt32 getScale(const T & v)
{
if constexpr (std::is_same_v<T, ColumnDateTime64>)
return v.getScale();
else if constexpr (std::is_same_v<T, DecimalField<DateTime64>>)
return v.getScale();
return 0;
}
template <typename T>
static auto stripDecimalFieldValue(T && v)
{
if constexpr (std::is_same_v<std::decay_t<T>, DecimalField<DateTime64>>)
return v.getValue();
else
return v;
} }
}; };

113
tests/queries/0_stateless/018001_dateDiff_DateTime64.reference Normal file
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@ -0,0 +1,113 @@
-- { echo }
-- DateTime64 vs DateTime64 same scale
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 00:00:10', 0, 'UTC'));
10
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 00:10:00', 0, 'UTC'));
600
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 01:00:00', 0, 'UTC'));
3600
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 01:10:10', 0, 'UTC'));
4210
SELECT dateDiff('minute', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 00:10:00', 0, 'UTC'));
10
SELECT dateDiff('minute', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 10:00:00', 0, 'UTC'));
600
SELECT dateDiff('hour', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 10:00:00', 0, 'UTC'));
10
SELECT dateDiff('day', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-02 00:00:00', 0, 'UTC'));
1
SELECT dateDiff('month', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-02-01 00:00:00', 0, 'UTC'));
1
SELECT dateDiff('year', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1928-01-01 00:00:00', 0, 'UTC'));
1
-- DateTime64 vs DateTime64 different scale
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 00:00:10', 3, 'UTC'));
10
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 00:10:00', 3, 'UTC'));
600
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 01:00:00', 3, 'UTC'));
3600
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 01:10:10', 3, 'UTC'));
4210
SELECT dateDiff('minute', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 00:10:00', 3, 'UTC'));
10
SELECT dateDiff('minute', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 10:00:00', 3, 'UTC'));
600
SELECT dateDiff('hour', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 10:00:00', 3, 'UTC'));
10
SELECT dateDiff('day', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-02 00:00:00', 3, 'UTC'));
1
SELECT dateDiff('month', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-02-01 00:00:00', 3, 'UTC'));
1
SELECT dateDiff('year', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1928-01-01 00:00:00', 3, 'UTC'));
1
-- With DateTime
-- DateTime64 vs DateTime
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 00:00:00', 'UTC'));
0
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 00:00:10', 'UTC'));
10
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 00:10:00', 'UTC'));
600
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 01:00:00', 'UTC'));
3600
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 01:10:10', 'UTC'));
4210
-- DateTime vs DateTime64
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 00:00:00', 3, 'UTC'));
0
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 00:00:10', 3, 'UTC'));
10
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 00:10:00', 3, 'UTC'));
600
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 01:00:00', 3, 'UTC'));
3600
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 01:10:10', 3, 'UTC'));
4210
-- With Date
-- DateTime64 vs Date
SELECT dateDiff('day', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDate('2015-08-19', 'UTC'));
1
-- Date vs DateTime64
SELECT dateDiff('day', toDate('2015-08-18', 'UTC'), toDateTime64('2015-08-19 00:00:00', 3, 'UTC'));
1
-- Same thing but const vs non-const columns
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), materialize(toDateTime64('1927-01-01 00:00:10', 0, 'UTC')));
10
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), materialize(toDateTime64('1927-01-01 00:00:10', 3, 'UTC')));
10
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), materialize(toDateTime('2015-08-18 00:00:10', 'UTC')));
10
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), materialize(toDateTime64('2015-08-18 00:00:10', 3, 'UTC')));
10
SELECT dateDiff('day', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), materialize(toDate('2015-08-19', 'UTC')));
1
SELECT dateDiff('day', toDate('2015-08-18', 'UTC'), materialize(toDateTime64('2015-08-19 00:00:00', 3, 'UTC')));
1
-- Same thing but non-const vs const columns
SELECT dateDiff('second', materialize(toDateTime64('1927-01-01 00:00:00', 0, 'UTC')), toDateTime64('1927-01-01 00:00:10', 0, 'UTC'));
10
SELECT dateDiff('second', materialize(toDateTime64('1927-01-01 00:00:00', 6, 'UTC')), toDateTime64('1927-01-01 00:00:10', 3, 'UTC'));
10
SELECT dateDiff('second', materialize(toDateTime64('2015-08-18 00:00:00', 0, 'UTC')), toDateTime('2015-08-18 00:00:10', 'UTC'));
10
SELECT dateDiff('second', materialize(toDateTime('2015-08-18 00:00:00', 'UTC')), toDateTime64('2015-08-18 00:00:10', 3, 'UTC'));
10
SELECT dateDiff('day', materialize(toDateTime64('2015-08-18 00:00:00', 0, 'UTC')), toDate('2015-08-19', 'UTC'));
1
SELECT dateDiff('day', materialize(toDate('2015-08-18', 'UTC')), toDateTime64('2015-08-19 00:00:00', 3, 'UTC'));
1
-- Same thing but non-const vs non-const columns
SELECT dateDiff('second', materialize(toDateTime64('1927-01-01 00:00:00', 0, 'UTC')), materialize(toDateTime64('1927-01-01 00:00:10', 0, 'UTC')));
10
SELECT dateDiff('second', materialize(toDateTime64('1927-01-01 00:00:00', 6, 'UTC')), materialize(toDateTime64('1927-01-01 00:00:10', 3, 'UTC')));
10
SELECT dateDiff('second', materialize(toDateTime64('2015-08-18 00:00:00', 0, 'UTC')), materialize(toDateTime('2015-08-18 00:00:10', 'UTC')));
10
SELECT dateDiff('second', materialize(toDateTime('2015-08-18 00:00:00', 'UTC')), materialize(toDateTime64('2015-08-18 00:00:10', 3, 'UTC')));
10
SELECT dateDiff('day', materialize(toDateTime64('2015-08-18 00:00:00', 0, 'UTC')), materialize(toDate('2015-08-19', 'UTC')));
1
SELECT dateDiff('day', materialize(toDate('2015-08-18', 'UTC')), materialize(toDateTime64('2015-08-19 00:00:00', 3, 'UTC')));
1

77
tests/queries/0_stateless/018001_dateDiff_DateTime64.sql Normal file
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@ -0,0 +1,77 @@
-- { echo }
-- DateTime64 vs DateTime64 same scale
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 00:00:10', 0, 'UTC'));
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 00:10:00', 0, 'UTC'));
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 01:00:00', 0, 'UTC'));
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 01:10:10', 0, 'UTC'));
SELECT dateDiff('minute', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 00:10:00', 0, 'UTC'));
SELECT dateDiff('minute', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 10:00:00', 0, 'UTC'));
SELECT dateDiff('hour', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-01 10:00:00', 0, 'UTC'));
SELECT dateDiff('day', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-01-02 00:00:00', 0, 'UTC'));
SELECT dateDiff('month', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1927-02-01 00:00:00', 0, 'UTC'));
SELECT dateDiff('year', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), toDateTime64('1928-01-01 00:00:00', 0, 'UTC'));
-- DateTime64 vs DateTime64 different scale
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 00:00:10', 3, 'UTC'));
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 00:10:00', 3, 'UTC'));
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 01:00:00', 3, 'UTC'));
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 01:10:10', 3, 'UTC'));
SELECT dateDiff('minute', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 00:10:00', 3, 'UTC'));
SELECT dateDiff('minute', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 10:00:00', 3, 'UTC'));
SELECT dateDiff('hour', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-01 10:00:00', 3, 'UTC'));
SELECT dateDiff('day', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-01-02 00:00:00', 3, 'UTC'));
SELECT dateDiff('month', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1927-02-01 00:00:00', 3, 'UTC'));
SELECT dateDiff('year', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), toDateTime64('1928-01-01 00:00:00', 3, 'UTC'));
-- With DateTime
-- DateTime64 vs DateTime
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 00:00:00', 'UTC'));
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 00:00:10', 'UTC'));
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 00:10:00', 'UTC'));
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 01:00:00', 'UTC'));
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDateTime('2015-08-18 01:10:10', 'UTC'));
-- DateTime vs DateTime64
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 00:00:00', 3, 'UTC'));
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 00:00:10', 3, 'UTC'));
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 00:10:00', 3, 'UTC'));
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 01:00:00', 3, 'UTC'));
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), toDateTime64('2015-08-18 01:10:10', 3, 'UTC'));
-- With Date
-- DateTime64 vs Date
SELECT dateDiff('day', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), toDate('2015-08-19', 'UTC'));
-- Date vs DateTime64
SELECT dateDiff('day', toDate('2015-08-18', 'UTC'), toDateTime64('2015-08-19 00:00:00', 3, 'UTC'));
-- Same thing but const vs non-const columns
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 0, 'UTC'), materialize(toDateTime64('1927-01-01 00:00:10', 0, 'UTC')));
SELECT dateDiff('second', toDateTime64('1927-01-01 00:00:00', 6, 'UTC'), materialize(toDateTime64('1927-01-01 00:00:10', 3, 'UTC')));
SELECT dateDiff('second', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), materialize(toDateTime('2015-08-18 00:00:10', 'UTC')));
SELECT dateDiff('second', toDateTime('2015-08-18 00:00:00', 'UTC'), materialize(toDateTime64('2015-08-18 00:00:10', 3, 'UTC')));
SELECT dateDiff('day', toDateTime64('2015-08-18 00:00:00', 0, 'UTC'), materialize(toDate('2015-08-19', 'UTC')));
SELECT dateDiff('day', toDate('2015-08-18', 'UTC'), materialize(toDateTime64('2015-08-19 00:00:00', 3, 'UTC')));
-- Same thing but non-const vs const columns
SELECT dateDiff('second', materialize(toDateTime64('1927-01-01 00:00:00', 0, 'UTC')), toDateTime64('1927-01-01 00:00:10', 0, 'UTC'));
SELECT dateDiff('second', materialize(toDateTime64('1927-01-01 00:00:00', 6, 'UTC')), toDateTime64('1927-01-01 00:00:10', 3, 'UTC'));
SELECT dateDiff('second', materialize(toDateTime64('2015-08-18 00:00:00', 0, 'UTC')), toDateTime('2015-08-18 00:00:10', 'UTC'));
SELECT dateDiff('second', materialize(toDateTime('2015-08-18 00:00:00', 'UTC')), toDateTime64('2015-08-18 00:00:10', 3, 'UTC'));
SELECT dateDiff('day', materialize(toDateTime64('2015-08-18 00:00:00', 0, 'UTC')), toDate('2015-08-19', 'UTC'));
SELECT dateDiff('day', materialize(toDate('2015-08-18', 'UTC')), toDateTime64('2015-08-19 00:00:00', 3, 'UTC'));
-- Same thing but non-const vs non-const columns
SELECT dateDiff('second', materialize(toDateTime64('1927-01-01 00:00:00', 0, 'UTC')), materialize(toDateTime64('1927-01-01 00:00:10', 0, 'UTC')));
SELECT dateDiff('second', materialize(toDateTime64('1927-01-01 00:00:00', 6, 'UTC')), materialize(toDateTime64('1927-01-01 00:00:10', 3, 'UTC')));
SELECT dateDiff('second', materialize(toDateTime64('2015-08-18 00:00:00', 0, 'UTC')), materialize(toDateTime('2015-08-18 00:00:10', 'UTC')));
SELECT dateDiff('second', materialize(toDateTime('2015-08-18 00:00:00', 'UTC')), materialize(toDateTime64('2015-08-18 00:00:10', 3, 'UTC')));
SELECT dateDiff('day', materialize(toDateTime64('2015-08-18 00:00:00', 0, 'UTC')), materialize(toDate('2015-08-19', 'UTC')));
SELECT dateDiff('day', materialize(toDate('2015-08-18', 'UTC')), materialize(toDateTime64('2015-08-19 00:00:00', 3, 'UTC')));