cannot update database table in ios - ios

Question

I need to update my sqlite table. So I wrote a query like this
NSString *updateSQL = [NSString stringWithFormat: #"UPDATE LOCALPLAYLISTSONGS SET SONGNAME=\"%#\",SONGPATH=\"%#\" WHERE PLAYLISTNAME=\"%#\"",SongTitle,songPath,playlistName];
const char *update_stmt = [updateSQL UTF8String];
sqlite3_prepare_v2(database, update_stmt, -1, &statement, NULL);
if (sqlite3_step(statement) == SQLITE_DONE)
{
status=#"song Added";
}
else
{
status=#"Error occured";
}
The problem is this always shows the status as Error Occured. What is the issue with my query. please show me
Thanks
UPDATE
-(NSString *)UpdateLocalPlaylist :(NSString *)playlistName :(NSString *)SongTitle :
(NSString *)songPath
{
NSLog(#"passed");
NSString *status;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSString *dbPath=[[NSString alloc]initWithString:[documentsDir stringByAppendingPathComponent:#"LocalSongs.sqlite"]];
NSLog(#"Database Path %#",dbPath);
sqlite3_stmt *statement;
if (sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK) {
NSLog(#"open");
NSString *updateSQL = [NSString stringWithFormat: #"UPDATE LOCALPLAYLISTSONGS SET SONGNAME=%#,SONGPATH=%# WHERE PLAYLISTNAME=%#",SongTitle,songPath,playlistName];
const char *update_stmt = [updateSQL UTF8String];
sqlite3_prepare_v2(database, update_stmt, -1, &statement, NULL);
if (sqlite3_step(statement) == SQLITE_DONE)
{
status=#"song Added";
}
else
{
status=#"Error occured";
}
return status;
}
else
return #"Error Occured";
}

Answer 1

SQL use single quotation mark (') for string, not double ("). Double quote is only for object names (tables, columns ...).

Answer 2

try this way...
NSString *updateSQL = [NSString stringWithFormat: #"UPDATE LOCALPLAYLISTSONGS SET
SONGNAME='%#',SONGPATH='%#' WHERE PLAYLISTNAME='%#'",SongTitle,songPath,playlistName];

Answer 3

you try this:
update_stmt = nil;
NSString *updateSQL = [NSString stringWithFormat: #"UPDATE LOCALPLAYLISTSONGS SET SONGNAME=%#,SONGPATH=%# WHERE PLAYLISTNAME=%#",SongTitle,songPath,playlistName];

Answer 4

Just try with this also and let me known
Declare your query in this format (As you declared before)
NSString *updateSQL = [NSString stringWithFormat: #"UPDATE LOCALPLAYLISTSONGS SET SONGNAME=\"%#\",SONGPATH=\"%#\" WHERE PLAYLISTNAME=\"%#\"",SongTitle,songPath,playlistName];
and added a condition like this to check
if (sqlite3_prepare_v2(database, update_stmt, -1, &statement, NULL)) == SQLITE_OK)
{
if (sqlite3_step(statement) == SQLITE_DONE)
{
status=#"song Added";
}
else
{
status=#"Error occured";
}
}