prepared-statement

I have the following statements: SqlConnection con = new SqlConnection(ConfigurationManager.AppSettings["DataBaseName"]); SqlCommand cmd = new SqlCommand(); cmd.Connection = con; cmd.CommandText = "update Table1 set data = @data where id = @id"; cmd.Parameters.AddWithValue("@data", SqlDbType.VarChar).Value = data; cmd.Parameters.AddWithValue("@id", SqlDbType.Int).Value = id; cmd.CommandType = CommandType.Text; try { DataSet ds = new DataSet(); con.Open(); cmd.Prepare(); cmd.ExecuteNonQuery(); return true; } When executing cmd.Prepare() I have an error SqlCommand.Prepare method requires all

I have a insert if not exists query as below. BEGIN IF NOT EXISTS (SELECT * FROM tbl_sampleTable WHERE name = ? or subject = ?) BEGIN INSERT INTO tbl_sampleTable VALUES (?,?) END END I am executing the above query with JDBC PreparedStatement as below pst.setString(1, name); pst.setString(2, subject); pst.setString(3, subject); pst.setString(4, name); pst.executeUpdate(); I am getting these name and subject as method parameters, is there anyway i can provide values for multiple "?" with same parameter as they are same, instead of mentioning them two times each. Edit: I don't use spring or any

I took this straight from php manual example -- it was almost identical to what I needed but I am still getting this error. Can someone tell me what I am missing? $stmt = $link->prepare("SELECT obitBody, Photo FROM tnObit WHERE obitID = ?"); if ($stmt->execute(array($_POST['obitID']))) { while ($row = $stmt->fetch()) { print_r($row); } } mysqli_stmt::execute() expects exactly 0 parameters, 1 given in paxdiablo execute (the object-based one, as opposed to the older less-favored variant) doesn't actually take any parameters. From your query and attempted parameters to execute , it looks like you

Right now I am in the middle of migrating from SQLite to Postgresql and I came across this problem. The following prepared statement works with SQLite: id = 5 st = ActiveRecord::Base.connection.raw_connection.prepare("DELETE FROM my_table WHERE id = ?") st.execute(id) st.close Unfortunately it is not working with Postgresql - it throws an exception at line 2. I was looking for solutions and came across this: id = 5 require 'pg' conn = PG::Connection.open(:dbname => 'my_db_development') conn.prepare('statement1', 'DELETE FROM my_table WHERE id = $1') conn.exec_prepared('statement1', [ id ])

Hey guys, can any of you find out why I'm getting the above error? $mysqli=new mysqli("localhost", "***", "***","***") or die($mysqli->connect_error); function checklogin($username, $password){ global $mysqli; $result = $mysqli->prepare("SELECT * FROM users WHERE username = ?"); $result->bind_param("s", $username); $result->query(); Lukáš Lalinský Calling $mysqli->prepare() will return an instance of MySQLi_STMT , but the MySQLi_STMT class doesn't have a query() method. Perhaps you meant execute() ? 来源： https://stackoverflow.com/questions/4635562/fatal-error-call-to-undefined-method-mysqli

I have created a small 3 tier program, consisting of : front end -> servlet -> database. Front end I enter some details into a form. They are passed to a servlet, which will render some HTML and display the values entered into the form, while also calling a class DatabaseHelper. The DatabaseHelper then connects and inserts these same values into a table. I know the values are being passed to the servlet class ok, as they are being displayed in the HTML. So the problem must lie within the prepared statement. Problem is, I cannot see any fault with the statement itself. When I query the table