prepared-statement

问题 Recently I've started to use prepared statements. However, I feel like my code becomes a bit too cluttered with all the temporary variables and extra lines required just to make a single query. So far my code looks like the following: $stmt = $conn->prepare("SELECT * FROM locations WHERE location_id = ?"); $stmt->bind_param("i", $_GET['location_id']); $stmt->execute(); $stmt->store_result(); $stmt->bind_result($location_id, $owner); //all the other $stmt->fetch() related code here... Are

问题 Recently I've started to use prepared statements. However, I feel like my code becomes a bit too cluttered with all the temporary variables and extra lines required just to make a single query. So far my code looks like the following: $stmt = $conn->prepare("SELECT * FROM locations WHERE location_id = ?"); $stmt->bind_param("i", $_GET['location_id']); $stmt->execute(); $stmt->store_result(); $stmt->bind_result($location_id, $owner); //all the other $stmt->fetch() related code here... Are

问题 From the npm docs, only visible prepared statements are for insert. Does these prepared statement work for Select, update, and delete? I tried for select, there isn't a .each function where the rows are called back. Anyone been able to do this or have links to resources, cause I can sure as hell unable to find any. 回答1: According to the node-sqlite3 API documentation, you can use parameters in your SQL queries in several different ways: // Directly in the function arguments. db.run("UPDATE

问题 From the npm docs, only visible prepared statements are for insert. Does these prepared statement work for Select, update, and delete? I tried for select, there isn't a .each function where the rows are called back. Anyone been able to do this or have links to resources, cause I can sure as hell unable to find any. 回答1: According to the node-sqlite3 API documentation, you can use parameters in your SQL queries in several different ways: // Directly in the function arguments. db.run("UPDATE

问题 From the npm docs, only visible prepared statements are for insert. Does these prepared statement work for Select, update, and delete? I tried for select, there isn't a .each function where the rows are called back. Anyone been able to do this or have links to resources, cause I can sure as hell unable to find any. 回答1: According to the node-sqlite3 API documentation, you can use parameters in your SQL queries in several different ways: // Directly in the function arguments. db.run("UPDATE

问题 Am not expert on web application, recently am writing a small webapp for my mobile app using servlets. My agenda is to receive data from client, and to put it into db. everything is running fine except, my database insert statement,which am trying to achieve using PreparedStatement. // This is how my insert statement looks like private String INSERT_INTO_DEVICES = "INSERT INTO travlemate.devices (owner," + "deviceid,gcmid) VALUES (?,?,?)"; // This is how am trying to insert PreparedStatement

问题 Am not expert on web application, recently am writing a small webapp for my mobile app using servlets. My agenda is to receive data from client, and to put it into db. everything is running fine except, my database insert statement,which am trying to achieve using PreparedStatement. // This is how my insert statement looks like private String INSERT_INTO_DEVICES = "INSERT INTO travlemate.devices (owner," + "deviceid,gcmid) VALUES (?,?,?)"; // This is how am trying to insert PreparedStatement

问题 In my local/development environment, the MySQLi query is performing OK. However, when I upload it on my web host environment, I get this error: Fatal error: Call to a member function bind_param() on a non-object in... Here is the code: global $mysqli; $stmt = $mysqli->prepare("SELECT id, description FROM tbl_page_answer_category WHERE cur_own_id = ?"); $stmt->bind_param('i', $cur_id); $stmt->execute(); $stmt->bind_result($uid, $desc); To check my query, I tried to execute the query via

问题 When to close prepared statements in PHP? Example: $query = "insert into web_reviews (title,added_date,reviewer_home_url,read_more_link,summary) values(?,?,?,?,?)"; $stmt = $this->db->prepare($query); $stmt->bind_params($this->title,$this->added_date,$this->reviewer_home_url,$this->read_more,$this->summary); $stmt->execute() or die("Cannot add the date to the database, please try again."); $stmt->close(); $stmt = $this->db->prepare("select id from web_reviews where title = ? and read_more = ?

问题 When to close prepared statements in PHP? Example: $query = "insert into web_reviews (title,added_date,reviewer_home_url,read_more_link,summary) values(?,?,?,?,?)"; $stmt = $this->db->prepare($query); $stmt->bind_params($this->title,$this->added_date,$this->reviewer_home_url,$this->read_more,$this->summary); $stmt->execute() or die("Cannot add the date to the database, please try again."); $stmt->close(); $stmt = $this->db->prepare("select id from web_reviews where title = ? and read_more = ?