To get YYYY-MM-DD format you need to use strftime as well. Following command computes the date and time for a given UNIX timestamp. Note that datetime is simply called with the column as a parameter and returns the string in an ISO-8601 format. SQLite - Date & Time, SQLite supports five date and time functions as follows. Insert INTO Appointments ( fromDateTime, toDateTime, name, description ) VALUES So, you need to change your times to YYYY-MM-DD hh:mm:ss format i.e. Now to use those values in any of SQLite's Date and Time functions they must either be an ISO-8601 compatible string, the word now, or a number (interpreted as either a Julian day number or a Unix timestamp dependent on the context). Let’s say we have an SQLite database which uses the built-in timestamp() function to calculate the default values for a certain column: CREATE TABLE guestlog ( id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT NOT NULL, time TEXT NOT NULL DEFAULT CURRENTTIMESTAMP. Since there is no error on INSERT, this gives the impression that SQLite has recognised the value as a timestamp, when in fact the value has just been treated as TEXT. SQLite default timestamps produce a rather unusual output which is not standards-compliant and there are no easy ways to fix that. To expand on comment, SQLite does not have a TIMESTAMP data type, so when you insert values into your fromDateTime and toDateTime column they are converted to one of SQLite's 5 data storage classes: NULL, INTEGER, REAL, TEXT, BLOB. Thats my SQL script, if you want to try: CREATE TABLE Appointments ( Sqlite> SELECT (julianday('now') - 2440587.5)*86400.I am trying to convert a timestamp to date in SQLite.īut it give me always Null back, I try many solution I find out, but any solution works for me Sqlite> SELECT date('now','start of year','+9 months','weekday 2') įollowing command computes the time since the UNIX epoch in seconds (like strftime('%s','now') except includes fractional part). Sqlite> SELECT strftime('%s','now') - strftime('%s',' 02:34:56') įollowing command computes the date of the first Tuesday in October for the current year. Sqlite> SELECT julianday('now') - julianday('') įollowing command computes the number of seconds since a particular moment in 2004. Sqlite> SELECT datetime(1092941466, 'unixepoch', 'localtime') įollowing command computes the current UNIX timestamp.įollowing command computes the number of days since the signing of the US Declaration of Independence. Sqlite> SELECT datetime(1092941466, 'unixepoch') įollowing command computes the date and time for a given UNIX timestamp 1092941466 and compensate for your local timezone. Sqlite> SELECT date('now','start of month','+1 month','-1 day') įollowing command computes the date and time for a given UNIX timestamp 1092941466. Following command computes the current date.įollowing command computes the last day of the current month. Let's try various examples now using SQLite prompt. You can use the following substitutions to format your date and time. SQLite provides a very handy function strftime() to format any date and time. Modifiers are applied from the left to right.įollowing modifers are available in SQLite − The time string can be followed by zero or more modifiers that will alter date and/or time returned by any of the above five functions. You can use the "T" as a literal character separating the date and the time. Time StringsĪ time string can be in any of the following formats − Sr.No. Following section will give you detail on different types of time strings and modifiers. The strftime() function also takes a format string as its first argument. The time string is followed by zero or more modifiers. This returns the date formatted according to the format string specified as the first argument formatted as per formatters explained below.Īll the above five date and time functions take a time string as an argument. This returns the number of days since noon in Greenwich on NovemB.C. This returns the date in this format: YYYY-MM-DD SQLite supports five date and time functions as follows − Sr.No.
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