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Ios obj-c中动态ALTER sqlite3_bind_text语句的语法错误_Ios_Objective C_Sqlite - Fatal编程技术网
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Ios obj-c中动态ALTER sqlite3_bind_text语句的语法错误

ios objective-c sqlite

Ios obj-c中动态ALTER sqlite3_bind_text语句的语法错误,ios,objective-c,sqlite,Ios,Objective C,Sqlite,此代码在“？”附近抛出错误[logging]：“ALTER TABLE jobs ADD COLUMN？text”中的语法错误 我看不出它在说什么？不能与ALTER一起使用 想法不能将参数用于表名或列名不能将参数用于表名或列名 NSArray *uArray = [NSArray arrayWithObjects:@"string1", @"string2", @"etc", nil]; const char *query = "ALTER TABLE jobs ADD COL

此代码在“？”附近抛出错误
[logging]：“ALTER TABLE jobs ADD COLUMN？text”中的语法错误

我看不出它在说什么？不能与ALTER一起使用


想法
不能将参数用于表名或列名
不能将参数用于表名或列名

    NSArray *uArray = [NSArray arrayWithObjects:@"string1", @"string2", @"etc", nil];

    const char *query = "ALTER TABLE jobs ADD COLUMN ? TEXT NOT NULL";
    sqlite3_stmt *compiledStatement = nil;

    sqlite3_exec((sqlite3 *)(db), "BEGIN EXCLUSIVE TRANSACTION", 0, 0, 0);
    if(sqlite3_prepare((sqlite3 *)(db), query, -1, &compiledStatement, NULL) == SQLITE_OK)
    {
      for (NSString *obj in uArray)
      {
          sqlite3_bind_text(compiledStatement, 1, [obj UTF8String], -1, SQLITE_STATIC);
          if (sqlite3_step(compiledStatement) != SQLITE_DONE) NSLog(@"DB not updated. Error: %s",sqlite3_errmsg((sqlite3 *)(db)));
          if (sqlite3_reset(compiledStatement) != SQLITE_OK) NSLog(@"SQL Error: %s",sqlite3_errmsg((sqlite3 *)(db)));
      }
    }