insert-id | 易学教程

Mysqli insert id: $mysqli->insert_id; or $ID_user=$stmt->insert_id?

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问题 which one is the correct code in a prepared statement? $ID_user=$mysqli->insert_id; or $ID_user=$stmt->insert_id; ? $stmt = $mysqli->prepare("INSERT INTO users (first_name, last_name) VALUES (? ,?)"); $stmt->bind_param("ss",$first_name,$last_name); if($stmt->execute()) { $ID_user=$mysqli->insert_id; // or $ID_user=$stmt->insert_id; } 回答1: There is absolutely no difference, you can use whatever you wish. 来源： https://stackoverflow.com/questions/43184732/mysqli-insert-id-mysqli-insert-id-or-id

Mysqli insert id: $mysqli->insert_id; or $ID_user=$stmt->insert_id?

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how do i handle concurrent inserts in mysql table and fetch the correct insert id

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问题 I am using adodb for PHP library. For fetching the id at which the record is inserted I use this function "$db->Insert_ID()" I want to know if there are multiple and simultaneous inserts into the database table, will this method return me the correct inserted id for each record inserted ? The reason I am asking this is because I use this last insert id for further processing of other records and making subsequent entries in the related tables. Is this approach safe enough or am I missing

Retrieve Core Data Entities in Order of Insertion

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问题 Is there an internal ID variable or timestamp I can use in a NSSortDescriptor to retrieve Core Data entities in the order they were inserted? I would rather not have to create such properties if there is a cleaner way, though will obviously do so if there are no other alternatives. 回答1: No, if you want a sort order for your data, you need to add that to your entities yourself. However you can easily add a NSDate attribute that has a default value of "NOW" so that it will auto-populate. 回答2:

Insert date and time into Mysql

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问题 I am trying to insert date and time into mysql datetime field. When a user select a date and time, it will generate two POST variables. I have searched internet but still not sure how to do it. My code. //date value is 05/25/2010 //time value is 10:00 $date=$_POST['date']; $time=$_POST['time']; $datetime=$date.$time If I insert $datetime into mysql, the date appears to be 0000-00-00:00:00:00 I appreciate it if anyone could help me about this. Thanks. 回答1: $datetime = $_POST['date'] . ' ' . $

mysql_insert_id alternative for postgresql

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问题 is there an alternative for mysql_insert_id() php function for PostgreSQL? Most of the frameworks are solving the problem partially by finding the current value of the sequence used in the ID. However, there are times that the primary key is not a serial column.... 回答1: From the PostgreSQL point of view, in pseudo-code: * $insert_id = INSERT...RETURNING foo_id;-- only works for PostgreSQL >= 8.2. * INSERT...; $insert_id = SELECT lastval(); -- works for PostgreSQL >= 8.1 * $insert_id = SELECT

Postgresql and PHP: is the currval a efficent way to retrieve the last row inserted id, in a multiuser application?

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问题 Im wondering if the way i use to retrieve the id of the last row inserted in a postgresql table is efficent.. It works, obviously, but referencing on the serial sequence currval value could be problematic when i have many users adding rows in the same table at the same time. My actual way is: $pgConnection = pg_connect('host=127.0.0.1 dbname=test user=myuser password=xxxxx')or die('cant connect'); $insert = pg_query("INSERT INTO customer (name) VALUES ('blabla')"); $last_id_query = pg_query(

insert_id in Kohana 3

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问题 I'm using Kohana 3 framework with Mysql stored procedures. How can I get id of the last inserted record? Here's the code: class Model_MyModel extends Kohana_Model { public function insertNew($param1, $param2) { $result = $this->_db->query(Database::INSERT, 'CALL insertNew('.$param1.', '.$param2.', false)'; return $result; } ... ... } Documentation says, the query() method returns an array with the last insert id and affected rows number, when executing an insert query. When I call: print_r(

Retrieve Core Data Entities in Order of Insertion

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Is there an internal ID variable or timestamp I can use in a NSSortDescriptor to retrieve Core Data entities in the order they were inserted? I would rather not have to create such properties if there is a cleaner way, though will obviously do so if there are no other alternatives. No, if you want a sort order for your data, you need to add that to your entities yourself. However you can easily add a NSDate attribute that has a default value of "NOW" so that it will auto-populate. You can also add an attribute to your entity, name it something like "sortNum", and whenever you fetch your entity

How can I use insert_id from one method in model in another method in the same model

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问题 I have a problem with insert_id. I'm using CodeIgniter. I have a method in which I insert some values and in it I return $insert_id=$this->db->insert_id(); return $insert_id;` I want to use this value in another method in the same model. I tried that: $insert_id=$this->add_teacher_subject(); but in this way first method runs again and I doesn't receive last_insert_id , but this value +1. Please, tell me how could I solve this problem? My model is: public function add_teacher_subject() { $date