INSERT INTO Table（列）VALUE（电子邮件）

Question

我想在 Table 中插入只有一栏的电子邮件。我尝试了两种方式。我第一次尝试使用 commandText，第二次尝试使用护栏。但是这两种解决方案都给我同样的错误。

System.Data.OleDb.OleDbException: 'Syntax error in INSERT INTO statement.'

我在 INSERT STATEMENT 中没有看到任何错误。也许问题出在 TABLE?

 using (OleDbCommand cmd = new OleDbCommand())
 {
    cmd.Connection = conn;
    cmd.CommandText = "SELECT COUNT (email) FROM [User] WHERE [email] LIKE '" + userEmail + "';";
    conn.Open();
    int count = Convert.ToInt32(cmd.ExecuteScalar()); // This passed
    if (count == 0)
    {
        string query = @"INSERT INTO User (email) VALUES (@email)";
        string cmdText= @"INSERT INTO User (email) VALUES ('"+userEmail+"')";
        OleDbCommand command = new OleDbCommand(cmdText, conn);
   //     command.Parameters.AddWithValue("@email", "userEmail");
       // command.CommandText = query;
        command.ExecuteNonQuery(); // I GOT ERROR HERE
    }
    conn.Close();
}

Answer 1

string cmdText= @"INSERT INTO User (email)) VALUES ('"+userEmail+"')";

您在 (email) 后的 ')' 太多了

Answer 2

User是关键字。你应该 INSERT INTO [USER] 而不是

INSERT INTO Table（列）VALUE（电子邮件）

INSERT INTO Table (Column) VALUE (email)

c#

ms-access

oledbcommand

insert-into