REPLACE function of SQLite does not work on objective c ios - ios

Question

I am working on SQLite but when I replace the data it adds again and again to my database, basically I want to store the alarm name, alarm type and alarm tune path, there is should be only 6 rows in NotiType because I am inserting exactly the 6 elements in every column. But the problem here is when I am replacing the data when there is change in alarm names types and tunes everyday, but the data is being inserted in every column below the and counting when ever the table is calling replace data function.
if([fileManager fileExistsAtPath:_dbPath] == YES) {
const char *dbPathagain = [_dbPath UTF8String];
if(sqlite3_open(dbPathagain, &_DB) == SQLITE_OK ) {
NSLog(#"database is open");
char *errorMessage;
const char *sql_statement = "CREATE TABLE IF NOT EXISTS NotiType(Alarm TEXT, Type TEXT, TPath TEXT)";
NSLog(#"created table success");
// sqlite3_stmt *statement = NULL;
// const char *dbPathagain = [ _dbPath UTF8String];
if([fileManager fileExistsAtPath:_dbPath] == YES) {
sqlite3_stmt *statement = NULL;
const char *dbPathagain = [_dbPath UTF8String];
if(sqlite3_open(dbPathagain, &_DB) == SQLITE_OK ) {
for(int itemIndex = 0; itemIndex < [azanst count];itemIndex++){
NSString *myname = [azanst objectAtIndex:itemIndex];
NSString *mytype = [alarmsstype objectAtIndex:itemIndex];
NSString *mytunepath = [alarmtune objectAtIndex:itemIndex];
NSString *insertSQLData = [NSString stringWithFormat:#"REPLACE INTO NotiType(Alarm, Type, TPath) VALUES (\"%#\", \"%#\",\"%#\")", myname, mytype, mytunepath];
NSLog(#"here is alarm names %#", myname);
NSLog(#"here alarm types %#", mytype);
NSLog(#"here alarm tune path %#", mytunepath);
const char *insert_statement = [insertSQLData UTF8String];
sqlite3_prepare_v2(_DB, insert_statement, -1, &statement, NULL);
if (sqlite3_step(statement) == SQLITE_DONE) {
NSLog(#"data added successfully");
}
else {
NSLog(#"could not add timings");
}
}
sqlite3_finalize(statement);
sqlite3_close(_DB);
}
}
if (sqlite3_exec(_DB, sql_statement, NULL, NULL, &errorMessage) != SQLITE_OK) {
NSLog(#"failed to insert in table");
}
sqlite3_close(_DB);
}
else {
NSLog(#"failed to open db or cretate table");
NSLog(#"Database Error Message : %s", sqlite3_errmsg(_DB));
}
}
UPDATE
I am doing something like this
for (i=0, i<= ID.count, i++) {
NSString *insertSQLData = [NSString stringWithFormat:#"UPDATE NotiType SET Alarm =" + myname "," + "Type =" + mytype "," + "Tpath =" mytunepath + " where ID == i"];
}

Answer 1

You forgot to provide a WHERE statement :
NSString *insertSQLData = [NSString stringWithFormat:#"REPLACE INTO
NotiType(Alarm, Type, TPath) VALUES (\"%#\", \"%#\",\"%#\")", myname,
mytype, mytunepath];
you should add something like WHERE _id = %#, myAlarmUniqIdentifier to make sureyou only change the one that is beeing edited
edit : Come to think of it I also recommand using UPDATE, I'm not sure if REPLACE is what you want here..
UPDATE {table} SET {column1} = {editedObject.value1}, {column2} = {editedObject.value2} WHERE {uniqueIdField} = {editedObject.identifier};
EDIT 2 :
following your edit, update your for loop like this :
NSString *myname = [azanst objectAtIndex:i];
NSString *mytype = [alarmsstype objectAtIndex:i];
NSString *mytunepath = [alarmtune objectAtIndex:i];
NSNumber *myid = [ID objectAtIndex:i]; //<-- get the unique identifier for the item number ‘i‘
[NSString stringWithFormat:#"UPDATE NotiType SET Alarm=%#, Type=%#, Tpath=%# where ID=%#", myname, mytype, mytunepath, myid];