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POiOS SQLite Update issue
 

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  1. POiOS SQLite Update issue
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    <p>After three days trying, I came here to get som help. I want to Update multiple columns in my SQLite database in my app. So i Have a "for" to call the update method many times as needed. But only the first row is affected.</p> <p>My for loop looks like:</p> <pre><code>for (NSDictionary *friend in friends) { NSMutableArray *valuesForUpdate = [[NSMutableArray alloc] init]; DBHelper *dbHelper = [[DBHelper alloc] initWithPath:@"DB_CodiUp"]; [valuesForUpdate addObject:[friend objectForKey:@"name"]]; [valuesForUpdate addObject:[friend objectForKey:@"code"]]; [valuesForUpdate addObject:[friend objectForKey:@"store"]]; [valuesForUpdate addObject:[friend objectForKey:@"imgData"]]; [dbHelper updateColumns:columnsToUpdate inTable:tableName withValues:valuesForUpdate where:@"id" isIqualsTo:[friend objectForKey:@"id"]]; } </code></pre> <p>And my Update method is this:</p> <pre><code>- (BOOL) updateColumns:(NSArray *)columns inTable:(NSString *)tableName withValues:(NSArray *)values where:(NSString *)columnSelector isIqualsTo:(NSString *)selector { sqlite3_stmt *statement; const char *sql; NSString *preSQL = [NSString stringWithFormat:@"Update %@ set ",tableName]; //Build sql for(int i = 0; i &lt; [columns count]; i++){ if(i == 0) preSQL = [NSString stringWithFormat:@"%@ %@ = ?", preSQL,[columns objectAtIndex:i]]; else preSQL = [NSString stringWithFormat:@"%@ , %@ = ?", preSQL,[columns objectAtIndex:i]]; } preSQL = [NSString stringWithFormat:@"%@ where %@ = %@", preSQL, columnSelector, selector]; sql = [preSQL UTF8String]; //Prepare statement if(sqlite3_prepare_v2(database, sql, -1, &amp;statement, NULL) == SQLITE_OK) { for(int i = 0; i &lt; [values count]; i++){ if([[values objectAtIndex:i] isKindOfClass:[NSString class]]) { sqlite3_bind_text(statement,i+1,[[values objectAtIndex:i] UTF8String], -1, SQLITE_TRANSIENT); } else if([[values objectAtIndex:i] isKindOfClass:[NSNumber class]]) { sqlite3_bind_int(statement, i+1, ((NSNumber *)[values objectAtIndex:i]).integerValue); } else if ([[values objectAtIndex:i] isKindOfClass:[NSData class]]) { sqlite3_bind_blob(statement, i+1, [[values objectAtIndex:i] bytes], [[values objectAtIndex:i] length], SQLITE_TRANSIENT); } else { NSLog(@"[SQLITE UPDATE] ERROR! The value at index %d is not a recognized data type", i); } } //Execute statement int success; success = sqlite3_step(statement); if (success != SQLITE_DONE) { NSLog(@"Error on step: %i",sqlite3_errcode(database)); } sqlite3_finalize(statement); NSLog(@"[DataBase]Updated row"); sqlite3_close(database); return YES; } else { NSAssert1(0,@"Error: Failed to prepare statement with message %s '.", sqlite3_errmsg(database)); return NO; } } </code></pre> <p>The method throws no error, it says that everything is normal and Updates has been executed. But when I do a SELECT * to that table, only the first row has been affected. Please, please, please take a look to the code and tell me what am doing wrong.</p> <p>THANKS!</p>
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