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How do I get the current AUTO_INCREMENT value for a table in MySQL?
To know the current auto_increment value, we can use the last_insert_id() function. Firstly, we will create a table with the help of INSERT command.
Creating a table −
mysql> CREATE table AutoIncrement -> ( -> IdAuto int auto_increment, -> primary key(IdAuto) -> ); Query OK, 0 rows affected (0.59 sec)
After creating a table, we will insert the records with the help of INSERT command. Inserting records −
mysql> INSERT into AutoIncrement values(); Query OK, 1 row affected (0.48 sec) mysql> INSERT into AutoIncrement values(); Query OK, 1 row affected (0.17 sec) mysql> INSERT into AutoIncrement values(); Query OK, 1 row affected (0.13 sec) mysql> INSERT into AutoIncrement values(); Query OK, 1 row affected (0.09 sec)
Now, we will see how many records have I inserted into my table with the help of SELECT command.
Displaying all records −
mysql> SELECT * from AutoIncrement; +--------+ | IdAuto | +--------+ | 1 | | 2 | | 3 | | 4 | +--------+ 4 rows in set (0.00 sec)
Therefore, the last auto increment is 4. Here is the query to know the current value have inserted, which is 4.
mysql> SELECT last_insert_id();
The following is the output −
+------------------+ | last_insert_id() | +------------------+ | 4 | +------------------+ 1 row in set (0.00 sec)
Here is the query that tells the next auto increment value. The syntax is as follows −
SELECT `AUTO_INCREMENT` FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'yourDatabaseName' AND TABLE_NAME = 'yourTableName';
Now, I am applying the above query −
mysql> SELECT `AUTO_INCREMENT` -> FROM INFORMATION_SCHEMA.TABLES -> WHERE TABLE_SCHEMA = 'business' -> AND TABLE_NAME = 'AutoIncrement';
The following is the output −
+----------------------------+ | AUTO_INCREMENT | +----------------------------+ | 5 | +----------------------------+ 1 row in set (0.13 sec)
From the above query, we are getting the next increment value.
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