ToIntString print out 1 or 0 as true/false.

BuildTestBlockid used only in unit test.

BuildTestRowid used only in unit test.

do not use this function, will be deleted in the future use BuildVarlenaFromValena or BuildVarlenaFromByteSlice instead.

BytesToArray bytes should be of little-endian format.

var v T.

FromClockUTC gets the utc time value in Timestamp.

FromClockZone gets the local time value in Timestamp.

GetArray Returns []T from Varlena.

Just for test , start >= 1.

rewrite ParseDateCast, don't use regexp, that's too slow the format we need to support: 1.yyyy-mm-dd hh:mm:ss.ms or yyyy-mm-dd hh:mm: or yyyy-mm-dd hh:mm 2.yyyy-mm-dd 3.yyyymmdd.

ParseDatetime will parse a string to be a Datetime Support Format: 1.

ParseEnum return item index with item name or value.

ParseEnumIndex return item value with index.

ParseEnumName return item index with item name.

ParseEnumValue return item index with special number.

During parsing, if the input length of msec is larger than predefined scale, it will be rounded eg.

ParseTimestamp will parse a string to be a Timestamp Support Format: 1.

StringToArrayToBytes convert "[1,2,3]" --> []float32{1.0,2.0,3.0} --> []bytes{11,33...}.

StringToArrayV2 this implementation uses only one forloop instead of split(",").

StringToArrayV3 this implementation uses only one forloop without casting string to rune array (via unsafe).

TODO::need to take "NodeID" account into.

Today Holds number of days since January 1, year 1 in Gregorian calendar.

UnitIsDayOrLarger if interval type unit is day or larger, we return true else return false use to judge a string whether it needs to become date/datetime type when we use date_add/sub(str string, interval type).

date[0001-01-01 to 9999-12-31].

date[0001-01-01 00:00:00 to 9999-12-31 23:59:59].

validTimeInDay return true if hour, minute and second can be a time during a day.

Time range is [-2562047787:59:59.999999,2562047787:59:59.999999] This is the max hour that int64 with solution msec can present (9223372036854775807(max int64)/1000000(msec) - 1)/3600(sec per hour) - 1 = 2562047787.

10^6.

10^3.

Time range is [-2562047787:59:59.999999,2562047787:59:59.999999] This is the max hour that int64 with solution msec can present (9223372036854775807(max int64)/1000000(msec) - 1)/3600(sec per hour) - 1 = 2562047787.

10^9.

any family.

In SQL , it is vecf32.

In SQL , it is vecf64.

T_bit bit family.

blobs.

bool family.

string family.

date and time.

numeric/decimals.

numeric/float family.

numeric/integer family.

Transaction TS.

system family.

WeekFirstWeekday: If not set, Weeks are numbered according to ISO 8601:1988.

WeekMondayFirst: set Monday as first day of week; otherwise Sunday is first day of week.

WeekYear: If set, Week is in range 1-53, otherwise Week is in range 0-53.

ZeroDatetime is the zero value for date Time '0000-01-01 00:00:00'.

CompoundKeyType -- this is simply deadly wrong thing.

just for test.

Why this was in package types?.

Fixed bytes.

FixedSized types in our type system.

Blockid.

Objectid.

Rowid.

Segmentid.

timestamp for transaction: physical time (higher 8 bytes) + logical (lower 4 bytes) See txts.go for impl.

UUID is Version 1 UUID based on the current NodeID and clock sequence, and the current time.