prepared-statement

问题 I'm trying to create a prepared statement in MySQL that takes in a single parameter. When I try this on the command line I get a syntax error. However, when there are no variables in my prepared statement, I am able to create them fine. Below is a copy and paste of what I am seeing at the MySQL command prompt: mysql> PREPARE state_name FROM "select * from ? limit 1"; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for

问题 I have connected to my Teradata database via JDBC and am trying to use the FASTLOAD utility of Teradata to insert records into a table (with prepared statements and batch). Eg: connection = DriverManager.getConnection("jdbc:teradata://192.168.1.110/TYPE=FASTLOAD", "admin", "admin"); String sql = "INSERT INTO table (RANDOM_INTEGER) VALUES (?)"; PreparedStatement preparedStatement = connection.prepareStatement(sql); int numberOfRecordsToInsert = 100000; for (int i = 0; i <

问题 I'm working with a prepared statement I've generated, and I'm getting a syntax error on the statement thrown by java. Yet when i copy and paste the toString of the PS into phpmyadmin for the database, it executes flawlessly. any idea's what could be wrong, i'm fairly stumped? edit: changed to ps.executeUpdate(query); still doesn't work. public int addOrder(Order order){ int rs=false; try { String query = "INSERT INTO `orders`(`orderNumber`, `productNumber`, `quantity`, `orderer`, `assembler`,

问题 Wondering if there is a way to get the amount of rows returned from a query using mysqli prepared statements, sort of like mysql_num_rows($query); 回答1: Presuming you're doing something like: $result = $statement->execute(); You can get the number of rows with $result->num_rows; See the manual. 回答2: Use this code: $result = $mysqli->query($query); $num_rows = $result->num_rows($result); 来源： https://stackoverflow.com/questions/4607487/any-way-to-get-the-amount-of-rows-returned-using-mysqli

问题 1.How do I use PrepareStatement for familyname and givenname? 2.Also, how do I case insensitive search by familyname or givenname? String query ="SELECT agent.familyname, agent.givenname" + " FROM agent" + " WHERE agent.agentid = piececreation.agentid" + " AND (LOWER(familyname) = '"+agent_lastname+"' OR LOWER(givenname) = '"+agent_name+"') ORDER by familyname"; PreparedStatement pst = conn.prepareStatement(query, Statement.RETURN_GENERATED_KEYS); pst.setString(1, agent_lastname); pst

问题 I am implementing SQLite Prepare-Statement in vs2012 using C. I am using this link as a tutorial to capture the processes that are running in my machine every time I run my code. Everything is working fine except that the prepare-statement does not allow me to put it outside the do-while loop. if I put it inside the do-while loop then I am doing nothing actually because with every db-insertion the prepare-statement is again executed which is not practical. however, when I put the prepare

问题 I'm trying to test the behavior of passing arguments to the sql.DB.Query method (using the database/sql package, and the PostgreSQL driver at github.com/lib/pq). Is there any way to get the raw query string after it's been processed to see how the arguments were inserted? I was thinking, for example, of writing a prepared query and then inspecting the resulting statement. Any ideas? Thanks! 回答1: It doesn't look like it inserts parameters in the query itself. It sends the query, then waits for

问题 I've been reading articles about SQL Injection, and decided to modify my code to prevent SQL injection. For example, I have an input which I insert the value to my database. Initially, my guard against injection was this: function test_input($data) { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); // $data = addslashes($data); $data = mysql_real_escape_string($data); return $data; } $artist = $_POST["artist"]; // can be anything $artist = test_input($artist)

问题 I have a sql which looks like this: SELECT * FROM T_TABLE WHERE ID IN(?) I wanna to set parameters for IN(?) via PrepareStatement . I think the desired method would looked like this: prepareStatement.setList(1,Arrays.asList("1","2","3")); But I don't know which method should I use to achieve this. I have tried setArray method with the help from here and I got these error messages. java.sql.SQLFeatureNotSupportedException: at com.microsoft.sqlserver.jdbc.SQLServerConnection.createArrayOf

问题 Here is my code: public int checklogin(String email, String key){ int res = -1; try { String selectSQL = "SELECT id FROM table WHERE email = ? AND key = ?"; PreparedStatement preparedStatement = dbConnection.prepareStatement(selectSQL); preparedStatement.setString(1, email); preparedStatement.setString(2, key); ResultSet rs = preparedStatement.executeQuery(); if (rs.next()) res = rs.getInt("id"); rs.close(); preparedStatement.close(); } catch (Exception e) { e.printStackTrace(); } return res;