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mysql last_insert_id returns 0

If mysql_insert_id() returns 0 or null, check your auto increment field is not being set by your sql query, also if you have multiple db connections like I did, the solution is to … 많은 개발자들의 Database 관련 코드를 ë³´ë©´ 심심치 않게 위험한 요소들을 가지고 있다. MySQL: "With no argument, LAST_INSERT_ID() returns a BIGINT UNSIGNED (64-bit) value representing the first automatically generated value successfully inserted for an AUTO_INCREMENT column as a result of the most recently executed INSERT statement." If expr is given as an argument to LAST_INSERT_ID() , the value of the argument is returned by the function and is remembered as the next value to be returned by LAST_INSERT_ID() . If no rows were (successfully) inserted, LAST_INSERT_ID() returns 0. could there be a server setting that is causing this? I tried to do SET @employee = LAST_INSERT_ID(); but couldnt make the syntax correct. Posted 2-Dec-13 21:08pm Member 10441019 Updated 11-Oct-19 1:46am Orcun Iyigun v2 Add a … mysql_insert_id() returns 0 if the previous statement does not use an AUTO_INCREMENT value. Here, I am going to create a table with primary key column. Note that mysql_insert_id() is only updated after INSERT and UPDATE statements, so you cannot use the C API function to retrieve the value for LAST_INSERT_ID(expr) after executing other SQL statements like … [Mybaatis(Mysql)] LAST_INSERT_ID() returns 0 Gongdel Gongdel 2018. I can't get LAST_INSERT_ID() to work using mySQL 5.0.18-nt. I am using the MyOLEDB 3 driver with ADO in ASP (JScript). Returns 0. And if I manually execute the SQL insert, I get the LAST_INSERT_ID() just fine. Return Value: An integer that represents the value of the AUTO_INCREMENT field updated by SELECT LAST_INSERT_ID() return 0 Post by duf » Mon 20 Feb 2012 22:45 Much is on the network on this topic but did not find a specific answer. When you insert a row into the table without specifying a value for the id column, MySQL automatically generates a sequential unique integer for the id column.The LAST_INSERT_ID() function returns the first automatically generated integer ( BIGINT UNSIGNED) successfully insert… id来进行add,这时候你如果用普通的insert,只会返回0和1,这时候就需要用到这个函数了。 mysqli_insert_id always returns 0 . 2. Find answers to LAST_INSERT_ID() with OLEDB and ASP returns 0 from the expert community at Experts Exchange I am trying to retrieve the auto increment ID of a record inserted into a MySQL table. MySQL instance every Stored Procedure now returns 0 for LAST_INSERT_ID() after an INSERT with EXECUTE even though the record is properly created! SELECT LAST_INSERT_ID() in ExecuteScalar() returns 0 only [Answered] RSS 3 replies Last post Apr 02, 2010 11:55 AM by EdKaufmann Michael Dawson November 20, 2005 12:53AM Re: LAST_INSERT_ID function not working. I rebooted my system and on my local 127.0.0.1 MySQL instance every Stored Procedure now returns 0 for LAST_INSERT_ID() after an INSERT even though the record is properly created! If you must save the value for later, be sure to call mysql_insert_id() immediately after the statement that generates the value. Note: The value of the MySQL SQL function LAST_INSERT_ID() always contains the most recently generated AUTO_INCREMENT value, and is not reset between queries. For example, in a multi-row INSERT: INSERT IGNORE INTO airlines VALUES (150, 'North Air'),-- this row will be skipped as ID 150 already exists, and IGNORE option used (0, 'Emirates'), This MySQL tutorial explains how to use the MySQL LAST_INSERT_ID function with syntax and examples. Working in the query browser, I set up a table: CREATE TABLE `sh101`.`tbltest` ( `testID` int(11) NOT NULL auto_increment, `testString` varchar(45) NOT NULL default '', PRIMARY KEY (`testID`) Stanislav Puncer November 20, 2005 06:14AM Re: LAST_INSERT_ID function not working. The syntax is as follows: SELECT LAST_INSERT_ID(). LAST_INSERT_ID() returns only automatically generated AUTO_INCREMENT values. The insert to the database are done through a C interface. Therefore you should retrieve the ID - if required - always immediately after the INSERT query, because otherwise, the ID can no longer be accessed. So, in order to avoid to mix up mysql and mysqli functions, use mysqli_insert_id. To expand further on point number 2 in the answer given by DTest: On the versions of MySQL that I have used, it is a good idea to explicity reset the value of LAST_INSERT_ID prior to each block of code where you plan to perform an insert. 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