The Year 1925 is a starting point because most of the timezones
switched to saner (mostly 15-minutes based) offsets somewhere
during 1924 or before. And that significantly simplifies implementation.
2238 is to simplify arithmetics for sanitizing LUT index access;
there are less than 0x1ffff days from 1925.
* Extended DateLUTImpl internal LUT to 0x1ffff items, some of which
represent negative (pre-1970) time values.
As a collateral benefit, Date now correctly supports dates up to 2149
(instead of 2106).
* Added a new strong typedef ExtendedDayNum, which represents dates
pre-1970 and post 2149.
* Functions that used to return DayNum now return ExtendedDayNum.
* Refactored DateLUTImpl to untie DayNum from the dual role of being
a value and an index (due to negative time). Index is now a different
type LUTIndex with explicit conversion functions from DatNum, time_t,
and ExtendedDayNum.
* Updated DateLUTImpl to properly support values close to epoch start
(1970-01-01 00:00), including negative ones.
* Reduced resolution of DateLUTImpl::Values::time_at_offset_change
to multiple of 15-minutes to allow storing 64-bits of time_t in
DateLUTImpl::Value while keeping same size.
* Minor performance updates to DateLUTImpl when building month LUT
by skipping non-start-of-month days.
* Fixed extractTimeZoneFromFunctionArguments to work correctly
with DateTime64.
* New unit-tests and stateless integration tests for both DateTime
and DateTime64.
Use PIPE_BUF over some magic number 1024 in terminate_handler, since
according to pipe(7):
PIPE_BUF
POSIX.1 says that write(2)s of less than PIPE_BUF bytes must be atomic
Also note that 1024, is too small, especially for C++ stacktraces (and
especially for debug builds, that contains lots of non-inlined helpers
for various ptrs).
* Refactoring: part 1
* Refactoring: part 2
* Handle request using ReadBuffer interface
* Struggles with ReadBuffer's
* Fix URI parsing
* Implement parsing of multipart/form-data
* Check HTTP_LENGTH_REQUIRED before eof() or will hang
* Fix HTTPChunkedReadBuffer
* Fix build and style
* Fix test
* Resist double-eof
* Fix arcadian build
* [WIP]
* Update skip-list
* Update ci_config.json
* Do not sync inserts for test
* Fix more tests
* Fix another test
* Enable one more test
* More fixed tests
* More test fixes
* Do not absolutize server path for now
* More test fixes
* Unset CLICKHOUSE_LOG_COMMENT where necessary
* Remove debugging set -e
* Fix more tests
* Fix test reference
* Fix style check
This will also fix integrity check (#18811), the reason it does not pops
up on CI during PR testing because CI does not set
YANDEX_OFFICIAL_BUILD, while it does set it for commits merged into
upstream commits, and hence once it was merged the special build was
failed.
Follow-up for: #16366
