I have date in string format in the table in yyyy-mm-dd format.
I want to convert that string to date format for further comparision on the date.
Any help would be greatful..
I'd suggest you to use SQLite - DateTime functions to compare field data value. Alternately you can use java.text.SimpleDateFormat class's parse method to convert string date to Date type.
I got the query of this.
SqlLite compares difference between two string date directly.
select column from Table where columnDate between '2012-07-01' and '2012-07-07'
But thanks for your interest guys.
Related
I have a Realm Object and I want to create a Query with a filter. My Realm Object has the attribute date. It has the format dd/mm/yyyy and is a String.
I want to create a Query that searches all entries where the date is a date in the future.My problem is that the function greaterThanOrEquals doesn't take a String (such as Date) as a parameter.
The result that I'm expecting is the following: Today is 09/07/2017. If an Element has the date of today or some date in future (e.g 10/07/2017), it should be in the result list. If it is in the past, then it should not be in the list.
Any help would be very much appreciated
I have stored date in a column of android sqlite database in YYYY/MM/DD format . Now I want to use julianday function in sql query to select special rows of database however julianday uses date in YYYY-MM-DD format . How can I convert date format inline with sql query?
Please rewrite this sample query which "startdate" and "enddate" are stored in YYYY/MM/DD format not YYYY-MM-DD:
select * from events where julianday(enddate)-julianday(startdate)>1200
SQL query accepts inline replace:
select * from events where julianday(replace(enddate,'/','-'))-julianday(replace(startdate,'/','-'))>1200
for more complex conversion use prepared SQL convert() function
I am trying to do some datetime aritmethics in Sqllite. I have a table with two rows defined as type DATETIME. These fields are called LOG_FROM and LOG_TO. In a query on this table I try to do the following:
SELECT SUM(LOG_FROM - LOG_TO) AS TIMESPENT FROM LOG_TABLE WHERE X=Y;
This subtraction inside the SUM function does not work as intended. It will always return the number 0. I read the data via a cursor.getString.
When I store dates in the table I convert them to strings on the format yyyy-MM-dd HH:mm:ss
SQLite ignores column data types. Your date strings are strings.
Your date format is supported by the built-in date functions, so you can use them to convert the dates to numbers.
Assuming that you want the result to be a number of days, use julianday:
SELECT SUM(julianday(LOG_TO) - julianday(LOG_FROM)) ...
I want to save current TIMESTAMP to a SQLite database in Android.
But it should be in MySQL TIMESTAMP format which is 2014-04-02 20:04:05
How to make it in db.execSQL();
Please help!
Have a look at SQLite date and time functions. You would do something like
strftime(%Y-%m-%d %H:%M:%S, 'now') in your SQL string. This particular format also has a shortcut: datetime('now')
db.execSql("insert into table (column) values ( datetime('now') )");
My preference though is to simply store the current time as a long, which you can then format any way you like (or any way the user likes, or any way the system defaults to showing dates/times).
You should use the following date format in order to insert dates/times in SQLite:
DateFormat dateFormatISO8601 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
and retrieve in string as below:
String crntDate = dateFormatISO8601.format(new Date());
P.S. Make sure your column is of type DATETIME
I am trying to retrieve data from the database with the following query:
select * from Oil Where date(DDate)=date('2012-08-07');
where DDate is one of the column in the Oil table with datatype text.I get the Arrayindexoutofboundsexception. I found that it is not returning any value the count is 0.
can anyone help me with this.What i am actually trying is to do is store date value in the table.I couldn't find which datatype should be used to save date,from the sqlite site is that it doesn't have a particular datatype for date and time.
SQL Server comes with the following data types for storing a date or a date/time value in the database:
DATE - format YYYY-MM-DD
DATETIME - format: YYYY-MM-DD HH:MM:SS
SMALLDATETIME - format: YYYY-MM-DD HH:MM:SS
select * from Oil Where date(DDate)=date('2012-08-07');
can be
select * from Oil Where DDate='2012-08-07';
If you have DDate in the date format 'yyyy-MM-dd' then you can directly compare the date using
select * from Oil Where DDate='2012-08-07';
else if you have DDate in the date format 'yyyy-MM-dd HH:mm:ss' then the query looks like this
select * from Oil Where date(DDate)='2012-08-07';
If you are saving date in sqlite database and you have to perform date operations like sorting or using date() and time() functions then you have to use the 'yyyy-MM-dd HH:mm:ss' date format.
Datatype doesn't matter for sqlite.