I create a table like that
CODE:...........
I update it this way
CODE:..........
I do see the change in eclipse with DDMS questoid
But when i try to retrieve the value I get nothing ....
CODE:.........
I've tried some variant like
CODE:............
With no success
Is this problem come from the type (integer) of my column ?
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I want to run this query in Android Application :
code:.......
My DB schema
code:..........
Here is the function -
code:...........
I have SQLITE DB query which returns me one record at a time.
This is the query :-
rawQuery("SELECT id, category_id, title, text FROM customer WHERE (reads = (SELECT MIN(minReads) FROM categories)) AND status = 'a' ORDER BY rating DESC, rand_index DESC LIMIT 1 ",null);
If I want to fetch next record as we are applying limit in my sqlite query above i m unable to get next record. Limit 1 is necessary as i have thousands of record in my db.
How can I fetch next record without modifying the existing query. I cannot apply loop on this as I have lots of records and I don't want all the record at the same time. I want it to be fetched dynamically one by one. I want to be be something like where I can store result in an array as I might need old record as well while getting next record.
For my application, I am trying to add entries without having a duplicate entry, and if there are a duplicate notify the user and have him try again. Using SQLite, which I know very very little about, I have tried these two ways and want to know which one is better, more efficient or a better way to develop it? First way:
db.execSQL("INSERT INTO " + DatabaseHelper.DATABASE_TABLE +
"(LATITUDE, LONGITUDE, RATING) SELECT " + latitude + ", " + longitude + ", " + rating +
" WHERE NOT EXISTS (SELECT 1 FROM " + DatabaseHelper.DATABASE_TABLE +
" WHERE LATITUDE = " + latitude + " AND LONGITUDE = " + longitude + ")");
Second way:
long id = -1;
try { id = db.compileStatement(
"SELECT COUNT(*) FROM " + DatabaseHelper.DATABASE_TABLE
+ " WHERE LATITUDE = " + latitude
+ " AND LONGITUDE = " + longitude)
.simpleQueryForLong();
} catch (NullPointerException e) { return -1;
} return id;
The first way, either inserts or ignores the values, I check by doing so, storing the row-count of the rows into a variable before the call, call that function, and then check its results. If the results is not higher than it was before the call, the insert was made ignored, prompt the user with the 'values exist' message. (Very sloppy, I know but desperate times calls for desperate measures). The second way, returns the actual count of rows that match the numbers I want to store, if the number returned greater than 1, prompt the user with the 'values exist' message. I have been going back and forth, trying different ways but I do not know how to set up SQLite to have UNIQUE pairs, which I was told would be the easiest.
I use this query in my android database, but It return no data. Am I missing something?
CODE:................
I successfully created the Database and inserted a row however I cannot Query it for some reason. My Droid crashes everytime.
CODE:...........
I get this exception
No such column: value: , while compiling: SELECT DISTINCT value FROM mainTable
I have a query that pulls everything from a database into a list view.
code:..........
I want only the records where the field KEY_HOMEID matches a variable called journalId which should be a numeric string.
I would also like to know how to bring the variable into my DatabaseAdapter... would ((resource)this.getApplication()).getjournalId()) work? resource is a class that extends application.
I am trying to write a select query from one single table in SQLite DB in my app where data exists.
This is the SQL.table has these columns - id(INTEGER), start_time(INTEGER), category(TEXT)
select category from tuuserid_pref where id = (select max(id) from tuuserid_pref
where start_time < '1242'); by the way I want to bind the value shown in 1242 which I have in an Integer variable.
I have written selects and inserts and updates without binding parameters and they work using db.execSQL and db.rawQuery functions but just cannot figure the binding parameters out.
I have a query that selects rows in a ListView without having a limit. But now that i have implemented a SharedPreferences that the user can select how much rows will be displayed in the ListView, my SQLite query doesnt work. Im passing the argument this way:
CODE:...................
I'm using the SQLite3 database system in the Android library. I need to execute a query during a transaction to see if there is a similar entry already there. If there is, I have to perform some other logic and adjustments before I add a new row. Can I execute a query within a transaction and get the result back immediately?
View 1 Replies View RelatedIs there any way out to achieve "SELECT * FROM tblname WHERE name LIKE '%[0-9]%' ". i know we can't do this with sqlite~ but how to deal with such query task with sqlite? i tried to use REGEXP ~but unluckily it is not pre-defined~ so i tried to define it by myself...but even i couldn't find a way in android to create a UserDefinedFunction...
View 2 Replies View RelatedIm trying to get an object form my SQLite database in my Android application. I know that the contact is in the database because when I add it and try finding by ID, it returns the object. When I try finding by first and last name, though, it throws an exception and Im left with a null reference.
Here is the query:
CODE:..........
Ive also tried to find just by first name and just by last name. Same result as above.
The exception is an SQLite exception
no such column: aurelius: , while compiling: SELECT _id, last_name, first_name,
email_address, organization_name, label, label_position FROM contacts WHERE
first_name=marcus AND last_name=aurelius
And also happens when trying to select just first or last name
no such column: marcus: , while compiling: SELECT _id, last_name, first_name,
email_address, organization_name, label, label_position FROM contacts WHERE
first_name=marcus
I know db.query was written like below in Android sample. I want to use other field instead of rowId witch is KEY_DATE, but it's not worked as well.
CODE:.................
Have been using a SQLite database, Theres a situation where i have a list which displays all the "name" field data of a table "table1". Now i have a button to insert data in "table1". The list is populated using a simple cursor adapter which is passed a cursor "cursor1" populated with the data. "cursor1" is prepared using the SQLite query - "SELECT * FROM table1". Now the moment i insert data, i need to update the list too.
My question is- will the Adapter sense the database change automatically (i guess not)?
using cursor1.requery() is correct or should i use cursor1 = db.query("table1", null, null, null, null, null, null);
I have this query which does work fine in MySQL
CODE:............
Distance is in Kilometers, the input is lat=12.345 and lon=67.89
The SQLite is 3, and I can't run custom functions with it as it's on Android. I also don't have acos() etc... as that is not part of the standard SQLite.
How would be the above query in SQLite?
I have a problem programming with android SDK 1.6. I'm doing the same things of the "notepad exaple" but the programm crash when i try some query. If i try to do a query directly in to the DatabaseHelper create() metod it goes, but out of this function it doesn't.
This is the source:
CODE:.................
Am I going wrong anywhere here ? because this is giving runtime error. application stopped unexpectedly.
I may b wrong in syntax.
CODE:..................
i want to run a delete query with limitation . I've tried to many queries but they didn't work . For know , I just want to remove all the rows and I write this code "
DELETE FROM tbl1 where _id IN(select _id from tbl1 WHERE cat=21)
The emulator runs perfectly without any error . right now , I have 32 rows with cat = 21 . solve this problem ?
How to programmatically stop a long-running query?
The long-running step is, for example, the first call to Cursor.moveToFirst(). This can sometimes take up to 30 seconds so I would like the user to be able to cancel.
However, how should this be done? I've tried closing the Cursor (in another thread) but all that happens is that the close() call takes as long as moveToFirst() and then terminates with the exception:
java.lang.IllegalStateException: attempt to acquire a reference on a close SQLiteClosable
I've got a query, (I'm using rawQuery())
SELECT * FROM <table>
I'm then storing what it returns using a cursor. From their what I want to do is, start at the first row so.. cursor.moveToFirst() then take each column , column by column and store its particular value in a variable. I then want to move onto the next row and do the same. So I guess my question is How would I get cursor to deal with multiple columns?
In my Android application user can fill database with imported data, then perform predefined, complex SQL query. With some data pattern, query will take very long (minutes and more on HTC Hero), while common usage will not exceed 10-15 seconds.
Is there any way to cancel pending SQLite query on Android? Timeout would be as good as well, partial results are not required. I'm performing query within AsyncTask.doInBackground()
I know best way is optimize query or change app logic, but in this case results depends on user knowledge anyway, so I'd like to help those who enter troublesome pattern.
I've a problem with a query in sqlite3.
The query is very simple:
SELECT MAX (INIT_DATE) INIT_DATE FROM TABLE;
When my application execute this query, and the table is empty, a record is returned. I can't understand why a record is being returned if the table is empty. It should return cero results.
I've tried to execute the query in two different ways:
cursor = db.query(true, "TABLE", new String[] {"MAX(INIT_DATE) AS INIT_DATE"}, null, null, null, null, null, null);
cursor = db.rawQuery("SELECT MAX(INIT_DATE) AS INIT_DATE FROM TABLE", null);
can we use truncate query in android database? otherwise can we performing truncate operation using our java code?
View 1 Replies View RelatedI have an Android SQLite/ContentProvider problem that I have been beating my head against the wall for over the past 3 hours.
View 1 Replies View RelatedWhen user presses a button from a webview, I open a scrollview activity with some buttons and edittext fields.
Once the user enters the fields and presses the 'create' button, from scrollview activity, I want the results from the called activity to be accessible. How can I do thi?
We can convert from Intent to URI and from URI to Intent. From Intent to URI string Intent intent1 = new Intent ();
String uriString = intent1.toURI ();
From URI string to Intent Uri uri = Uri.parse (uriString);
Intent intent2 = new Intent ();
intent2.setData (uri)
After conversion, intent1 and inten2 should be same. for example:
Intent intent1 = new Intent ();
intent1.addCategory (Intent.CATEGORY_HOME);
intent1.addCategory (Intent.CATEGORY_LAUNCHER);
Log.v ("", "Intent1 = " + intent1);
if (intent1.hasCategory (Intent.CATEGORY_HOME))
Log.v ("Intent1", "#1 hasCategory TRUE");
else Log.v ("Intent1", "#1 hasCategory FALSE");
String str = intent1.toURI ();
Uri uri = Uri.parse (str);
Intent intent2 = new Intent ();
intent2.setData (uri);
Log.v ("", "Intent2 = " + intent2);
if (intent2.hasCategory (Intent.CATEGORY_HOME))
Log.v ("Intent2", "#2 hasCategory TRUE");
else Log.v ("Intent2", "#2 hasCategory FALSE");
result Intent1 = { categories=android.intent.category.HOME,android.intent.category.LAUNCHER} } #1 hasCategory TRUE
Intent2 {data=#Intent;
category=android.intent.category.HOME;
category=android.intent.category.LAUNCHER;
end } #2 hasCategory FALSE
In this sample code, Intent2 is a conversion result from Intent1. If you run this sample code, Intent1 result and Intent2 result are different. Because Intent1 and Intent2 have a same Intent.CATEGORY_HOEM, the result should be Intent1 and Intent2 is TRUE (intent.hasCategory). I think this is bug. And the hint is Intent1 and Intent2 's toString result is different.
Intent1 = {categories=android.intent.category.HOME,android.intent.category.LAUNCHER}
Intent2 = { data=#Intent;category=android.intent.category.HOME
category= android.intent.category.LAUNCHER;end }
I don't know how to convert Intent to URI(String) and convert URI (String) to Intent. I want to save Intent to DB and read Intent from DB.
My application that uses geocoding was working fine till last week and now all of a sudden am not getting proper data from the same.
I used getLocality() , which was returning CITY name previously. But now it is returning NULL.
Is something changed? or Has someone faced the same issue?
My application is on SDK 1.0
According to my research, which includes reputable sources (Mark Murphy et al), the most preferred way of polling a remote source and presenting said data to the user is by creating a service and using AsyncTask within that service to do the polling. I have done that.But, when I read the docs there seem to be several "Threading Rules" that conflict with this way of doing things: "The task instance must be created on the UI thread." and "execute(Params...) must be invoked on the UI thread." As stated, I have created the task instance on the Service thread (not the UI thread). Am I missing something? Also, when the AsyncTask finished, I sent out a Broadcast on onPostExecute, which is then picked up by the Activity, telling it to retrieve the final value again from the service (since I couldn't obviously update the UI from the service). I couldn't figure out any other way to return the result of the AsyncTask. Is this the correct practice?
View 8 Replies View RelatedHere is what I got while running a test case of open core . *************** # pvplayer_ engine _test -test 1 1 SDK Labeled: PVDEV_ CORE_RELEASE_6.506.4.1 built on 20090312 Test Program for pvPlayer engine class. Input file name 'test.mp4' Test case range 1 to 1 Compressed output Video(No) Audio(No)Log level 8; Log node 0 Log Text 0 Log Mem 0 Starting Test 1: Open-Play-Stop-Reset Results for Test Case 1: Successes 1, Failures 1 Total Execution time for file test.mp4 is : 2.712000 seconds# *************** I want to ask why it shows 1 success and 1 failure . there should be only 1 pass or 1 fail only . Do each test case have multiple sub-tests within them ? which class in source code finally decide whether it is pass or faiL?
View 2 Replies View RelatedI am using two intent for various action in my activity and i also used onActivityResult for get result,i want to answer for how to get tow intent result in onActivityResult?anybody knows please give sample code for me..
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