public String getContact(String searchName) {
SQLiteDatabase db = this.getReadableDatabase();
String[] args = { searchName };
Cursor cursor = db.rawQuery("SELECT * FROM " + TABLE_MOVIES
+ " WHERE name =? ", args);
String iName = null, iDiretor = null, iGenre = null;
cursor.moveToFirst();
while (!cursor.isAfterLast()) {
iName = cursor.getString(cursor.getColumnIndex(KEY_NAME));
iDiretor = cursor.getString(cursor.getColumnIndex(KEY_DIRECTOR));
iGenre = cursor.getString(cursor.getColumnIndex(KEY_GENRE));
cursor.moveToNext();
}
cursor.close();
The iName variable is working fine but the other two are returning null. Any help?
Use the SQLiteDatabase query methods instead of rawQuery for the best results.
db.query(TABLE_MOVIES, null, "name = ?", args, null);
This is preferred because rawQuery is easy to mess up and doesn't protect against SQL injections.
Try this way:
Cursor cursor = db.rawQuery("SELECT * FROM " + TABLE_MOVIES + " WHERE name LIKE ? ", args);
Cursor cursor = db.rawQuery("SELECT * FROM " + TABLE_MOVIES
+ " WHERE name LIKE "+searchName, null); // Put Like When your are comparing String
Related
I want to update my database table with multiple where conditions. I already did with single where condition
db.update(TABLE_MISSING_ITEMS, values, KEY_AUTHOR + " = ?",
new String[] { String.valueOf(items.getAuthor()) });
Now i want 2 where condition.
P.S :- No raw query
You can separate the different WHERE conditions with ANDlike this:
db.update(TABLE_NAME,
contentValues,
NAME + " = ? AND " + LASTNAME + " = ?",
new String[]{"Manas", "Bajaj"});
The way I solved my need
public boolean checkHususiKayit(String baslik, String tarih) {
boolean varMi = false;
SQLiteDatabase database = dbHelper.getReadableDatabase();
final String kolonlar[] = {DBHelper.COLUMN_H_ID,
DBHelper.COLUMN_H_ID,
DBHelper.COLUMN_H_BASLIK,
DBHelper.COLUMN_H_TARIH,
DBHelper.COLUMN_H_YOK_TUR,
DBHelper.COLUMN_H_AD,
DBHelper.COLUMN_H_WEB_ID,
DBHelper.COLUMN_H_NUMARA,
DBHelper.COLUMN_H_YURD_ID,
DBHelper.COLUMN_H_YETKILI_AD,
DBHelper.COLUMN_H_YETKILI_ID,
DBHelper.COLUMN_H_TEL,
DBHelper.COLUMN_H_EMAIL,
DBHelper.COLUMN_H_ADDRESS,
DBHelper.COLUMN_H_VAR,
DBHelper.COLUMN_H_GOREVLI,
DBHelper.COLUMN_H_YOK,
DBHelper.COLUMN_H_IZINLI,
DBHelper.COLUMN_H_HATIMDE};
String whereClause = DBHelper.COLUMN_H_BASLIK + " = ? AND " + DBHelper.COLUMN_H_TARIH + " = ?"; // HERE ARE OUR CONDITONS STARTS
String[] whereArgs = {baslik, tarih};
Cursor cursor = database.query(DBHelper.TABLE_NAME_HUSUSI, kolonlar, whereClause, whereArgs, null, null, null + " ASC");
while (cursor.moveToNext()) {
varMi = true;
}
database.close();
cursor.close();
return varMi;
}
THIS CAN ALSO BE DONE LIKE THIS
public void UpdateData(int Cid,int flag,String username,String password)
{
SQLiteDatabase database = this.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put("Status",flag);//I am updating flag here
database.update(TABLE_NAME, cv, ""+KEY_UserName+"= '"+ username+"' AND "+KEY_CID+"='"+Cid+"' AND "+KEY_Password+"='"+password+"'" , null);
database.close();
}
Try this simple query
db.update(TABLE_FF_CHECKLIST_DATA,contentValues, "FFCHECKLISTID = ? and TASK_ID_CHK = ?" , new String[] {"EHS" , "CTO914"});
where "EHS" is value in column FFCHECKLISTID and CTO914 is value in TASK_ID_CHK.
Im trying to get the data of an entire column into a string array. My database contains two columns Id and Names. I want to read all the entries of the names column and put it into a array. Please help.
EDIT #1:
Im using the following code but i can get only one name with this code.
String query = "Select * FROM " + TABLE_APPS + " WHERE " + COLUMN_NAME + " = \"" + productname + "\"";
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(query, null);
if (cursor.moveToFirst()) {
cursor.moveToFirst();
name = cursor.getString(1);
cursor.close();
} else {
name = null;
}
db.close();
int total=0;
Cursor csr=sdb.query("tablename", null, null,null,null,null,null);
csr.moveToFirst();
while(!csr.isAfterLast())
{
total++;
csr.moveToNext();
}
String strarray[] = new String[total];
Cursor csrs=sdb.query("tablename", null, null,null,null,null,null);
csrs.moveToFirst();
int aray=0;
while(!csrs.isAfterLast())
{
strarray[aray]=csrs.getString(1);
aray++;
csrs.moveToNext();
}
I created a table with three columns id, name and discipline.
I want to find the student name given the discipline.
Following is my method:
String findstudent(String disc){
SQLiteDatabase sqLiteDatabase = this.getReadableDatabase();
String find = "SELECT * FROM "+ TABLE_STUDENTS + " WHERE "+KEY_DISCIPLINE +" = " +disc ;
Cursor cursor = sqLiteDatabase.rawQuery(find,null);
cursor.moveToFirst();
String found =cursor.getString(1);
return found;
}
When I use it, the application stops working.
I am not sure. But, you can try this way
Cursor.moveToFirst();
do{
//get the data
String found =cursor.getString(cursor.getColumnIndexOrThrow("COLUMN NAME"));
}while(Cursor.moveNext);
Try the following code:
String find = "SELECT *<enter code here>
FROM "+ TABLE_STUDENTS + "
WHERE "+KEY_DISCIPLINE +" = '" + disc + "'" ;
Try this:
String findstudent(String disc){
Cursor cursor;
cursor = this.db.query(TABLE_STUDENTS,null, KEY_DISCIPLINE +" = "+ disc, null, null, null, null,null );
cursor.moveToFirst();
String found =cursor.getString(0);
return found;
}
Hope it Helps!!
public Cursor findstudent(String disc){
SQLiteDatabase sqLiteDatabase = this.getReadableDatabase();
String[] find = new String[]{ col1,col2,col3};//all fields in db in need
String order=col1;
Cursor c=db.query(TABLE_STUDENTS, find, KEY_DISCIPLINE +" = " +disc, null, null, null, order);
c.moveToFirst();
db.close();
return c;
}
In the activity include this:
DataBaseHandler db = new DataBaseHandler(this);
try {
Cursor c = db.displayName(your_disc);
startManagingCursor(c);
if (!c.moveToFirst()) {
System.out.println("!Move " + posnumber);
} else {
String idname = c.getString(c
.getColumnIndex(DataBaseHandler.KEY_NAME));
System.out.println("null:");
System.out.println("Move " + idname);
return true;
}
c.close();
stopManagingCursor(c);
} catch (Exception ex) {
}
Please let me know why my where clause isn't working. I tried using the query instead of rawquery but no luck.
try {
String categoryex = "NAME";
DBHelper dbHelper = new DBHelper(this.getApplicationContext());
MyData = dbHelper.getWritableDatabase();
Cursor c = MyData.rawQuery("SELECT * FROM " + tableName + where Category = '+categoryex'" , null);
if (c != null ) {
if (c.moveToFirst()) {
do {
String firstName = c.getString(c.getColumnIndex("Category"));
String age = c.getString(c.getColumnIndex("Text_Data"));
results.add( firstName + " Directions: " + age);
}while (c.moveToNext());
}
}
} catch (SQLiteException se ) {
Log.e(getClass().getSimpleName(), "Could not create or Open the database");
} finally {
if (MyData != null)
MyData.execSQL("DELETE FROM " + tableName);
MyData.close();
}
try... (you left out a double-quote before where.
Cursor c = MyData.rawQuery("SELECT * FROM " + tableName + " where Category = '" +categoryex + "'" , null);
I think you should use rawQuery in this form:
rawQuery("SELECT * FROM ? where Category = ?", new String[] {tableName, categoryex});
I think it's more secure this way.
Your quotes are buggered:
Cursor c = MyData.rawQuery("SELECT * FROM " + tableName + " where Category = '" + categoryex + "'" , null);
You also should read up on SQL injection attacks.
it will be more easy if you use this technique instead of rawQuery,its easy way change your table name, columns and where conditions accordingly.
public ArrayList<Invitees> getGroupMembers(String group_name) {
ArrayList<Invitees> contacts = new ArrayList<>();
SQLiteDatabase db = this.getReadableDatabase();
String[] projection = {COLUMN_CONTACT, COLUMN_PHONE_NUMBER};
String selection = COLUMN_GROUP_NAME + "=?";
String[] selectionArgs = {group_name};
Cursor cursor = db.query(GROUPS_TABLE_NAME, projection, selection, selectionArgs, null, null, null);
if (cursor.moveToFirst()) {
do {
Invitees invitees = new Invitees();
invitees.setUserName(cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_CONTACT)));
invitees.setInviteePhone(cursor.getString(cursor.getColumnIndexOrThrow(COLUMN_PHONE_NUMBER)));
contacts.add(invitees);
} while (cursor.moveToNext());
}
return contacts;
}
I want to use select query for retrieving data from table. I have found, rawQuery(query, selectionArgs) method of SQLiteDatabase class to retrieve data. But I don't know how the query and selectionArgs should be passed to rawQuery method?
rawQuery("SELECT id, name FROM people WHERE name = ? AND id = ?", new String[] {"David", "2"});
You pass a string array with an equal number of elements as you have "?"
Maybe this can help you
Cursor c = db.rawQuery("query",null);
int id[] = new int[c.getCount()];
int i = 0;
if (c.getCount() > 0)
{
c.moveToFirst();
do {
id[i] = c.getInt(c.getColumnIndex("field_name"));
i++;
} while (c.moveToNext());
c.close();
}
One example of rawQuery - db.rawQuery("select * from table where column = ?",new String[]{"data"});
if your SQL query is this
SELECT id,name,roll FROM student WHERE name='Amit' AND roll='7'
then rawQuery will be
String query="SELECT id, name, roll FROM student WHERE name = ? AND roll = ?";
String[] selectionArgs = {"Amit","7"}
db.rawQuery(query, selectionArgs);
see below code it may help you.
String q = "SELECT * FROM customer";
Cursor mCursor = mDb.rawQuery(q, null);
or
String q = "SELECT * FROM customer WHERE _id = " + customerDbId ;
Cursor mCursor = mDb.rawQuery(q, null);
For completeness and correct resource management:
ICursor cursor = null;
try
{
cursor = db.RawQuery("SELECT * FROM " + RECORDS_TABLE + " WHERE " + RECORD_ID + "=?", new String[] { id + "" });
if (cursor.Count > 0)
{
cursor.MoveToFirst();
}
return GetRecordFromCursor(cursor); // Copy cursor props to custom obj
}
finally // IMPORTANT !!! Ensure cursor is not left hanging around ...
{
if(cursor != null)
cursor.Close();
}
String mQuery = "SELECT Name,Family From tblName";
Cursor mCur = db.rawQuery(mQuery, new String[]{});
mCur.moveToFirst();
while ( !mCur.isAfterLast()) {
String name= mCur.getString(mCur.getColumnIndex("Name"));
String family= mCur.getString(mCur.getColumnIndex("Family"));
mCur.moveToNext();
}
Name and family are your result