Loop through while(sqlite3_step(statement) until all the rows - ios

Question

I am storing multiple values in Sqlite database in my iOS app.
I need to retrieve the values under "cellForRowAtIndexPath"
- (NSString *) retrieveDetailText :(NSString *) emailAddress :(NSString *) uidText :(NSString *) folderName {
NSString *detailText = nil;
const char *dbpath = [databasePath UTF8String];
//SQLIte Statement
NSString *selettablequery = [NSString stringWithFormat:#"select * from MailFolderDBTable"];
if (sqlite3_open(dbpath, &database) == SQLITE_OK)
{
if (sqlite3_prepare(database, [selettablequery UTF8String], -1, &statement, NULL) ==SQLITE_OK)
{
while(sqlite3_step(statement) == SQLITE_ROW)
{
char *uidfield = (char *) sqlite3_column_text(statement, 5);
NSString *uidStr = [[NSString alloc] initWithUTF8String: uidfield];
NSLog(#"retrieveDetailText: uidStr: %#", uidStr);
if([uidStr isEqualToString:uidText]) {
char *emailstring = (char *) sqlite3_column_text(statement, 6);
NSString *detailTextData = [[NSString alloc] initWithUTF8String: emailstring];
NSData *data = [[NSData alloc] initWithBase64EncodedString:detailTextData options:NSDataBase64DecodingIgnoreUnknownCharacters];
detailText = [NSKeyedUnarchiver unarchiveObjectWithData:data];
}
From this code, I need to loop through at while(sqlite3_step(statement) == SQLITE_ROW)
As I am calling retrieveDetailText under cellForRowAtIndexPath, and it is not looping through here while(sqlite3_step(statement) == SQLITE_ROW), It checks if([uidStr isEqualToString:uidText]) only one time.
How can i loop through while(sqlite3_step(statement) until all the rows checked and get the value.

Answer 1

If you only need one row which satisfies uidText, then you can change your query no?
//SQLIte Statement
NSString *selettablequery = [NSString stringWithFormat:#"select * from MailFolderDBTable where uid = %#", uidText];
Otherwise, you can fetch all the data before loading your tableView, in an array and then use it as your tableView data source.