将数据添加到SQLite数据库

Question

以下代码是将数据添加到SQLite数据库;

 NSString *insertSQL = [NSString stringWithFormat: @"INSERT INTO FruitsTable name,qty,amt,date VALUES \"%@\",\"%@\",\"%d\",\"%@\"",fruits.fruitName,fruits.qty,fruits.amount,fruits.date]; 
     NSLog(@"query %@",insertSQL); 
     const char *insert_stmt = [insertSQL UTF8String]; 

     sqlite3_prepare_v2(database, insert_stmt, -1, &statement, NULL); 
     if (sqlite3_step(statement) == SQLITE_DONE) 
     { 
      NSLog(@"Row added"); 
     } 

     else { 
      NSLog(@"Failed to add row"); 
     } 
     sqlite3_finalize(statement); 
     sqlite3_close(database); 

无法添加行..因为在语句中获得空值。

Answer 1

退房数据插入SQL

NSDate* date = [NSDate date]; 
    NSDateFormatter* formatter = [[[NSDateFormatter alloc] init] autorelease]; 
    [formatter setDateFormat:@"yyyy-MM-dd"]; 
    NSString* str = [formatter stringFromDate:date]; 
    sqlite3 *database; 
    /////// 
    sqlite3_stmt *compiledStmt; 
    if(sqlite3_open([dbPath UTF8String], &database) ==SQLITE_OK) { 

     sqlite3_prepare_v2(database, "BEGIN TRANSACTION", -1, &compiledStmt, NULL); 
     sqlite3_step(compiledStmt); 
     sqlite3_finalize(compiledStmt); 

     const char *sqlInsertQry="insert into bookmarks(book_id,description,entry_date,page_no) values(?,?,?,?)"; 
     if(sqlite3_prepare_v2(database, sqlInsertQry, -1, &compiledStmt, NULL) == SQLITE_OK){ 
      sqlite3_bind_int(compiledStmt,1,[[bookdetail valueForKey:@"bookid"] intValue]); 
      sqlite3_bind_text(compiledStmt,2,[[bookdetail valueForKey:@"text"] UTF8String],-1,SQLITE_TRANSIENT); 
      sqlite3_bind_text(compiledStmt,3,[str UTF8String],-1,SQLITE_TRANSIENT); 
      sqlite3_bind_int(compiledStmt,4,[[bookdetail valueForKey:@"page"] intValue]); 

       NSUInteger err = sqlite3_step(compiledStmt); 
       if (err != SQLITE_DONE){ 
        NSLog(@"error while binding %d %s",err, sqlite3_errmsg(database)); 
       } 
       sqlite3_reset(compiledStmt); 
      sqlite3_finalize(compiledStmt);  
     } else { 
      NSLog(@"Invalid Query"); 
     } 

     sqlite3_prepare_v2(database, "END TRANSACTION", -1, &compiledStmt, NULL); 
     sqlite3_step(compiledStmt); 
     sqlite3_finalize(compiledStmt); 
     sqlite3_close(database); 
     return YES; 
    } else { 
     NSLog(@"error while opening database."); 
     return NO; 
    }