What is last insert ID in MySQL?
Getting MySQL last insert ID is a useful function that lets you quickly and easily retrieve the ID of the last record you added to your database. You can make MySQL get last insert ID by merely using a few simple statements, such as mysql_insert_id().
Is MySQL LAST_INSERT_ID reliable?
This means that the value returned by the function to a given client is the first AUTO_INCREMENT value generated for most recent statement affecting an AUTO_INCREMENT column by that client. Using LAST_INSERT_ID() and AUTO_INCREMENT columns simultaneously from multiple clients is perfectly valid.
When to use last _ insert _ ID ( ) in SQL?
LAST_INSERT_ID () can only tell you the ID of the most recently auto-generated ID for that entire database connection, not for each individual table, which is also why the query should only read SELECT LAST_INSERT_ID () – without specifying a table. As soon as you fire off another INSERT query on that connection, it gets overwritten.
How to see the last value inserted in a table?
If you can’t get your code to keep track of the value it just inserted, and can’t change the table to have a DateInserted column with a default of CURRENT_TIMESTAMP (which would allow you to see which row was inserted last), perhaps you could add a trigger to the table that logs all inserts. will return the last value inserted in current session.
How to get last record ID from table?
Any technique of asking for the maximum value / top 1 suffers a race condition where 2 people adding at the same time, would then get the same ID back when they looked for the highest ID. But the first one will be more efficient because no index scan is needed (if you have index on Id column).
How to find the newest ID in a table?
If you want the newest ID currently in an arbitrary table, you have to do a SELECT MAX (id) on that table, where id is the name of your ID column.