prepared-statement

问题 The example from the PHP manual is using OOP. Is there a way to do it procedurally? 回答1: MySQLi has procedural-style function calls that can handle prepared statements. (Some of the procedural-style functions are deprecated, however.) http://us.php.net/manual/en/mysqli-stmt.prepare.php 回答2: Yes, you can. As far as I know PDO is completely object-oriented, but you may want to look into mysqli which allows both procedural and OO styles. Procedural coders will find the basics almost identical.

问题 The example from the PHP manual is using OOP. Is there a way to do it procedurally? 回答1: MySQLi has procedural-style function calls that can handle prepared statements. (Some of the procedural-style functions are deprecated, however.) http://us.php.net/manual/en/mysqli-stmt.prepare.php 回答2: Yes, you can. As far as I know PDO is completely object-oriented, but you may want to look into mysqli which allows both procedural and OO styles. Procedural coders will find the basics almost identical.

问题 Is this code class opinion { private $dbh; var $opinionid,$opinion,$note,$actorid,$dateposted; var $isnew=FALSE; function loadby($column,$value,$operator="="){ $dbh = new PDO(I deleted parameters here); $statement=$dbh->prepare("select * from fe_opinion where :column :operator :value"); $statement->bindParam(":column", $column); $statement->bindParam(":value", $value); $statement->bindParam(":operator", $operator); //UNSURE, DOUBTFUL $statement->bindColumn("opinionid", $this->opinionid);

问题 I have the following snippet of code in my WCF web service that builds a set of where conditions according to the formatting of the values of a provided dictionary. public static Dictionary<string, string>[] VehicleSearch(Dictionary<string, string> searchParams, int maxResults) { string condition = ""; foreach (string key in searchParams.Keys) { //Split out the conditional in case multiple options have been set (i.e. SUB;OLDS;TOY) string[] parameters = searchParams[key].Split(';'); if

问题 I have the following snippet of code in my WCF web service that builds a set of where conditions according to the formatting of the values of a provided dictionary. public static Dictionary<string, string>[] VehicleSearch(Dictionary<string, string> searchParams, int maxResults) { string condition = ""; foreach (string key in searchParams.Keys) { //Split out the conditional in case multiple options have been set (i.e. SUB;OLDS;TOY) string[] parameters = searchParams[key].Split(';'); if

问题 This question already has an answer here : My PDO Statement doesn't work (1 answer) Closed last month . I work on an bigger database project. Now I become curious, because there are to same SQL-Query, where the first get's an error and the second, same, workes fine. I don't know. Meanwhile I doubt my mind. Here are the short script part: $sql = "SELECT * FROM `wt_name` WHERE `n_surname` LIKE 'A%' AND `n_file` = '4' AND `n_type` = 'NAME' GROUP BY `n_id` ORDER BY `n_surname`, `n_givn` ";

问题 I am working with a Java application which uses JPA and a Postgres database, and I am trying to create a flexible prepared statement which can handle a variable number of input parameters. An example query would best explain this: SELECT * FROM my_table WHERE (string_col = :param1 OR :param1 IS NULL) AND (double_col = :param2 OR :param2 IS NULL); The idea behind this "trick" is that if a user specifies only one parameter, say :param1 , we can just bind null to :param2 , and the WHERE clause

问题 I want to write a MySQL statement like: SELECT * FROM someTable WHERE someId IN (value1, value2, value3, ...) The trick here is that I do not know ahead of time how many values there will be in the IN(). Obviously I know I can generate the query on the go with string manipulations, however since this will run in a loop, I was wondering if I could do it with a PDO PreparedStatement. Something like: $query = $PDO->prepare('SELECT * FROM someTable WHERE someId IN (:idList)'); $query->bindValue('

问题 I want to write a MySQL statement like: SELECT * FROM someTable WHERE someId IN (value1, value2, value3, ...) The trick here is that I do not know ahead of time how many values there will be in the IN(). Obviously I know I can generate the query on the go with string manipulations, however since this will run in a loop, I was wondering if I could do it with a PDO PreparedStatement. Something like: $query = $PDO->prepare('SELECT * FROM someTable WHERE someId IN (:idList)'); $query->bindValue('

问题 I have a java servlet application and I'm using a prepared query to update a record in a SQL Server Database table. Lets say I want to execute UPDATE MyTable SET name = 'test' WHERE id = '10' . (Yes, id is a varchar) I used the following code to make this happen: PreparedStatement pstmt = con.prepareStatement("UPDATE MyTable SET name = ? WHERE id = ?"); pstmt.setString(1, getName() ); pstmt.setString(2, getID() ); pstmt.executeUpdate(); I found out that while I was running a JMeter script to