You can use the REAL storage class to store the date and/or time values as Julian day numbers, which is the number of days since noon in Greenwich on November 24, 4714 B.C. based on the proleptic Gregorian calendar.我们可以用REAL字段类型来存储日期和/或时间值。它是以儒略日表...
1) [+-]NNN years It is used to specify number of years added/subtracted to the date 2) [+-]NNN months It is used to specify number of months added/subtracted to the date 3) [+-]NNN days It is used to specify number of days added/subtracted to the date 4) [+-]NNN hours...
SQLite时间的保存与查询一时间的保存经过GOOGLE发现大多数的解决方法为datetime.ToString("s")来解决的,经过测试此方法虽然解决的问题,但还不够完美。因为这样格式化出来的时间在用工具SQLiteDeveloper查看时显示的时间看起来很怪,不直观。而且如果在S...
TEXT as ISO8601 strings ("YYYY-MM-DD HH:MM:SS.SSS"). REAL as Julian day numbers, the number of days since noon in Greenwich on November 24, 4714 B.C. according to the proleptic Gregorian calendar. INTEGER as Unix Time, the number of seconds since 1970-01-01 00:00:00 UTC. Applica...
SQLite时间的保存与查询一时间的保存经过GOOGLE发现大多数的解决方法为datetime.ToString("s")来解决的,经过测试此方法虽然解决的问题,但还不够完美。因为这样格式化出来的时间在用工具SQLiteDeveloper查看时显示的时间看起来很怪,不...
Simply using the string now tells SQLite to use the current date and time.The format string DDDD.DDDD represents a Julian day numberthe number of days since noon on November 24, 4714 BC, Greenwich Mean Time. SQLite uses Julian date format internally to manipulate date and time values....
For my use I added new functions and functionalities to the date functions that come with the sqlite 3.3.0 (can be used in older versions as well with small effort). In main lines they are as follows: 1. NNN days 2. NNN hours ...
select strftime(date_created) as dateCreated from tblFeeds where strftime(date_created) between strftime(date('now','-7days')) and strftime(date('now')) order by dateCreated（上个月）：select strftime(date_created) as dateCreated from tblFeeds where strftime(date_created) between ...
function IncDay(const AValue: TDateTime;const ANumberOfDays: Integer = 1): TDateTime; //日相加减 function IncHour(const AValue: TDateTime;const ANumberOfHours: Int64 = 1): TDateTime; //小时相加减 function IncMinute(const AValue: TDateTime; const ANumberOfMinutes: Int64 = 1): TDateTim...
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