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Merge pull request #23392 from ClickHouse/fix-4854
Keep default timezone on DateTime operations if it was not provided explicitly #4854
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20a5fed53e
@ -19,9 +19,12 @@ public:
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TimezoneMixin(const TimezoneMixin &) = default;
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const DateLUTImpl & getTimeZone() const { return time_zone; }
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bool hasExplicitTimeZone() const { return has_explicit_time_zone; }
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protected:
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/// true if time zone name was provided in data type parameters, false if it's using default time zone.
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bool has_explicit_time_zone;
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const DateLUTImpl & time_zone;
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const DateLUTImpl & utc_time_zone;
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};
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@ -5,7 +5,6 @@
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#include <Functions/CustomWeekTransforms.h>
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#include <Functions/IFunctionImpl.h>
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#include <Functions/TransformDateTime64.h>
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#include <Functions/extractTimeZoneFromFunctionArguments.h>
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#include <IO/WriteHelpers.h>
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@ -44,9 +44,9 @@ std::string extractTimeZoneNameFromFunctionArguments(const ColumnsWithTypeAndNam
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/// If time zone is attached to an argument of type DateTime.
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if (const auto * type = checkAndGetDataType<DataTypeDateTime>(arguments[datetime_arg_num].type.get()))
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return type->getTimeZone().getTimeZone();
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return type->hasExplicitTimeZone() ? type->getTimeZone().getTimeZone() : std::string();
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if (const auto * type = checkAndGetDataType<DataTypeDateTime64>(arguments[datetime_arg_num].type.get()))
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return type->getTimeZone().getTimeZone();
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return type->hasExplicitTimeZone() ? type->getTimeZone().getTimeZone() : std::string();
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return {};
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}
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@ -13,6 +13,7 @@ namespace DB
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class Block;
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/// Determine working timezone either from optional argument with time zone name or from time zone in DateTime type of argument.
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/// Returns empty string if default time zone should be used.
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std::string extractTimeZoneNameFromFunctionArguments(
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const ColumnsWithTypeAndName & arguments, size_t time_zone_arg_num, size_t datetime_arg_num);
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@ -0,0 +1,6 @@
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DateTime
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DateTime
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DateTime(\'UTC\')
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DateTime64(3)
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DateTime64(3)
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DateTime64(3, \'UTC\')
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@ -0,0 +1,26 @@
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SELECT toTypeName(now());
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SELECT toTypeName(now() - 1);
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SELECT toTypeName(now('UTC') - 1);
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SELECT toTypeName(now64(3));
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SELECT toTypeName(now64(3) - 1);
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SELECT toTypeName(toTimeZone(now64(3), 'UTC') - 1);
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DROP TABLE IF EXISTS tt_null;
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DROP TABLE IF EXISTS tt;
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DROP TABLE IF EXISTS tt_mv;
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create table tt_null(p String) engine = Null;
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create table tt(p String,tmin AggregateFunction(min, DateTime))
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engine = AggregatingMergeTree order by p;
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create materialized view tt_mv to tt as
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select p, minState(now() - interval 30 minute) as tmin
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from tt_null group by p;
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insert into tt_null values('x');
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DROP TABLE tt_null;
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DROP TABLE tt;
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DROP TABLE tt_mv;
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