Compare dates (stored as string) in android sqlite database?

Question

I store dates as String in my database, in this format:

YYYY-MM-DD HH:MM:SS

which is one of supported formats (http://www.sqli

Answer 1

if you are storing dates as strings in the format

YYYY-MM-DD HH:mm:ss  

====> then your date field is a DateTime datatype

Thus you have to use such query

select * 
  from MyTable 
  where mydate >= Datetime('2000-01-01 00:00:00') 
  and mydate <= Datetime('2050-01-01 23:00:59')

you can also use the snippet given by @Joop Eggen with th between operator it's th same approche.

The BETWEEN operator is logically equivalent to a pair of comparisons. "x BETWEEN y AND z" is equivalent to "x>=y AND x<=z" except that with BETWEEN, the x expression is only evaluated once. see sqlite3 docs

Answer 2

I think your issue is here...

AND Datetime(column_date) <= Datetime (2050-01-01))

Why are you using Datetime here instead of Date?

Try this:

SELECT  * FROM MyTable WHERE (Date(column_date) >= Date (2000-01-01) AND Date(column_date) <= Date (2050-01-01))

Answer 3

Date filed in the SQLite table will be TEXT and date data should be stored as "2012-12-31 00:12:00" format that comparison dose not give you trouble and if we consider that fields are date_from and date_to and we are storing current date at to_date then we should get the current date as bellow and

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String to_date = sdf.format(new Date());

and the SQL query should be

    crs = db.rawQuery(
      "SELECT _id, date_from, date_to, done_or_not, list_name " +
      "FROM list_tbl " +
      "WHERE " +
      "date_from <= Datetime('"+to_date+"') AND date_to >= Datetime('"+to_date+"')", null);

Answer 4

SELECT *
FROM MyTable
WHERE 
    column_date BETWEEN '2000-01-01 00:00:00' AND '2050-01-01 23:00:59'

Should do the trick. This only uses strings but you said that would be fitting.

The error was the missing time part or not doing a substr on the date part only. And then data/time conversion functions might give wrong things too.

Answer 5

Compare dates (stored as string) in android SQLite database. Use date in 12/07/2015 format and use a query like this:

SELECT * FROM tableName WHERE Date >=('12/07/2015') and appointmentDate <('13/07/2015')";

This works for me.