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android – Is there type Long in SQLite?

Posted by: admin March 11, 2020 Leave a comment

Questions:

I want to create a table with the column type Long instead of Integer. Is it possible?

How to&Answers:

From the SQLite docs

INTEGER. The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value.

Since long is 8 byte and INTEGER can also save values of 8 bytes, you can use INTEGER.

Answer:

Create the column as an INTEGER type:

db.execSQL("CREATE TABLE IF NOT EXISTS " + TABLE_A + "("
                + KEY + " INTEGER" + ")");

Put the long value in INTEGER column:

contentValues.put(KEY, object.getLongValue());
db.insert(TABLE_A, null, contentValues);

Important: retrieve the value from cursor as LONG

Cursor cursor = db.rawQuery("SELECT * FROM " + TABLE_A, null);
long value = cursor.getLong(0);

Answer:

I don’t think there is type long. Either you can use INTEGER (or) Numeric. Here is link with supported data types http://www.sqlite.org/datatype3.html

Answer:

You just define a column with Integer type. SQLite sets the column length to 1,2,4,8 depending on your input.

Answer:

His above link depicts a 64 bit Integer or Essentially a long, also see
What is the difference between SQLite integer data types like int, integer, bigint, etc.?

and
Version of SQLite used in Android?

Answer:

SQLIte will set suitable integer width depend on your input

Answer:

the INTEGER can store the long but to get long from cursor should do like this :

int type = cursor.getType(j);

String value = cursor.getString(j);
try {
       int intValue = Integer.parseInt(value);
       field.set(object, intValue);
    } catch (NumberFormatException e) {
       long longValue = Long.parseLong(value);
       field.set(object, longValue);
}

i use this to store timestamp in sqlite