Question

我的C＃项目中有简单的SQLite数据库表 Database Screenshot

以下是我用来从DB检索数据的代码：

SQLiteConnection dbConnection;
dbConnection = new SQLiteConnection("Data Source=./new.db;");
dbConnection.Open();
if (dbConnection.State == System.Data.ConnectionState.Open)
     richTextBox3.Text = "Conn";
string sqlcommand = "SELECT age FROM table WHERE index=1";
SQLiteCommand command = new SQLiteCommand(sqlcommand, dbConnection);
SQLiteDataReader result = command.ExecuteReader();
if(result.HasRows)
{
      while (result.Read())
      {
           richTextBox1.Text = result.GetInt32(0) + " "+ result.GetString(1) + " " + result.GetInt32(2);
       }
 }

也许while循环不正确但我的问题是表格附近的语法错误。

Answer 1

尝试在表之间添加``因为表是保留字。您可以在reserved words

上查看所有保留字词

string sqlcommand = "SELECT `age` FROM `table` WHERE `index`='1'";

Answer 2

正如@Rohit提到的table是SQLite中的关键字，但如果您仍想使用它，则可以更改查询，如下所示：通过[table]

包围您的表名

string sqlcommand = "SELECT age FROM [table] WHERE index=1";

它也适用于SQLSERVER

SQLiteDataReader错误，靠近“table”：语法错误

2 个答案: