I am keeping date time values(Unix timestamps) in a "NUMERIC" format in SQLite table, the value is calculated through Java Date function:
new Date().getTime();
The values look like proper date/time when I load these in an Android program, but when I try to experiment with queries through SQLite data browser 2 beta the results are awkward. Numeric values are given below:
1391313058888
1391313104336
1391313175752
When I try to apply date function the SQLite data browser shows following for all three rows:
-1413-03-01 13:07:12
My query is
SELECT date(trxDateTime, 'unixepoch') from trx_log
I was trying to figure out how to get correct date values in the first place, once I got those then I believe I could figure a way to use it in where clause or group by.
Basically I am trying to show totals sales by year. Any help will be appreciated.
Your times are in milliseconds. Just convert them to seconds, and you'll be fine:
SELECT date(trxDateTime / 1000, 'unixepoch') from trx_log
Related
just straight forward question.
I have date details of items stored in sqlite in epoch format of time.
Now i want to filter it so that i can get only data before 5 day of it. How can i do that. Can you please give me a detail answer?
I do not believe that SQLite has a native GETDATE() function. I think you should be able to filter based on your date column, even if it is text. For example, if your date column is called item_date, you can query like so:
select * from <yourtable> where item_date between 'CurrentDate-5' and 'CurrentDate'
Just set some variables before hand a pass them in to the above query.
In my application i am trying to fetch records from a sqlite table with respect to a range of dates selected from the date picker. The records in the table are as follows :
The query formed is as given below :
select * from Order_Master where Order_Date >= '12-04-2015' and Order_Date <= '11-03-2016' And WSS_Code = '1014332'
This query does not return any value which is not the desired result as the dates are in the selected range.
What could possibly be wrong here ? Am i missing something?
Kindly guide me through this. Thanking you in Advance !
Your date format cannot be used for comparisons, because strings are compared lexicographically, i.e., with the first characters compared first.
In this query, you are searching for dates with a month that is at least 12 and, at the same, no larger than 11.
SQLite has no separate data type for dates.
To store dates in a database, you have to choose one of the existing data types (number or text).
When using SQLite's built-in date functions, you must use one of the formats supported by them.
Try this , hope it helps
Change your datatype to text
SELECT * FROM Order_Master WHERE Order_Date BETWEEN '12-04-2015' AND '11-03-2016' AND WSS_Code = '1014332';
As well as your query will also work.
I am trying to create a simple reminder app. Im just logically thinking about the process. Basically I want to be able to choose a DAY and time e.g Monday 15:00, this will trigger EVERY Monday 15:00 until it gets deleted from database. Having said that example I have questions to accomplish this process.
How will I store DAY and TIME, what type, do I need different columns in my table?
How can I compare real time DAY to current DAY, so if its Monday real time it will return ONLY Monday reminders? is this possible?
Will I need to primarly focus using calendar?
As documentation says:
SQLite does not have a storage class set aside for storing dates
and/or times. Instead, the built-in Date And Time Functions of SQLite are capable of storing dates and times as TEXT, REAL, or INTEGER values.
You can store date and time in the TEXT type of field in the following format:
YYYY-MM-DD HH:MM:SS.SSS
and then use built-in date & time functions of SQLite to filter your records.
Another option is to store date & time as a time-stamp in milliseconds and write proper queries for selecting data or use Joda library for filtering or date & time transformation, but probably such solution would be less efficient and less convenient than first option.
Using integer column is the easiest solution.
Just store the date in millisecond (Calendar.getTimeInMillis()) and your good to go.
Then you just have to search on that integer to find the correct event in your database :
String selectQuery = "SELECT whateveryouneed FROM events WHERE date_event > ?";
Cursor c = db.rawQuery(selectQuery, new String[] { String.valueOf(calendar.getTimeInMillis())});
...
if you need to find all the event for a day , you just have to find the limits of the day in millisecond and make a query according to those limits
Hi i need to do a query where I compare 2 dates and select all the objects created between those 2 dates.
My date field is a Text type.
I have run some tests and apparently the date is being stored in YYYY-MM-DD format.
Im using this code to do the query:
return bd.query("Gasto", null , "Fecha_Creado between '"+fecha1+ "' and '"+fecha2+"'", null, null, null, "Fecha_Creado DESC", null);
and this code to retrieve the dates and pass them to the previous function
return bd.obtenerGastosVar(fecha.get(Calendar.YEAR)+"-"+(fecha.get(Calendar.MONTH)+1)+"-1",
fecha.get(Calendar.YEAR)+"-"+(fecha.get(Calendar.MONTH)+1)+"-"+fecha.getActualMaximum(Calendar.DAY_OF_MONTH), ordenadoPor);
so the final result should a query that is saying :
select * from gasto where date between date1 and date2
so thats
select * from gasto where date between 2013-8-1 and 2013-8-31
so, that query is supposedly making a date comparison with the former YYYY-MM-DD.
Im expecting objects created between those two dates, but its NOT working. Its was working an hour ago
I did something funny and use for the query dates, a DD-MM-YYYY format. And that apparently is working, but im scared that using this format for the queries will bring not reliable results.
So how can I fix this and still get reliable results?
Thanks for your help
Apparently, for me to be able to compare the dates, achieving good results, dates must have 2 digits months and days
for example 2013-04-09 or 2013-11-25
dates with one digit months or days don't work
I have a column in android sqlite database table. The values in the column are like:
2011/06/01
2011/06/02
2011/06/05
2011/06/10
2011/06/11
2011/06/13
2011/06/15
2011/06/16
2011/06/25
2011/06/26
I have a string today="2011/06/27"
Now I want to delete those rows whose column value is older than 5 days from today.
How to modify the code to achieve this?
return db.delete(DATABASE_TABLE,where date="", null) > 0;
You have to store your dates in a other format, check the date function of SQLite. Use YYYY-MM-DD instead of YYYY/MM/DD. You already got an order on your dates defined by its string representation. So you can use the date function of SQLite to select the correct rows.
Dates older than 5 days would be queried like this.
... WHERE datecolumn < date('now', '-5 days') ...
There is no date type in sqllite
you just store a data represented value as a string or int
then use the date based functions of sqllite to get the values
You should be using the stored procedure rather than writing the service. It will make easier for your application to automatically update the records.
See link: http://searchoracle.techtarget.com/answer/Time-based-stored-procedure-to-check-table-and-update-old-records
Another solution is to use date instead of string. When you run your service then fetch data as Date and then you can make the simple comparison.