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Getting the next primary key without adding a new record is impossible, isn't it in MYSQL
No, it is possible to get the next primary key without adding a new record. Let us first create a −
mysql> create table DemoTable1399 -> ( -> StudentId int NOT NULL AUTO_INCREMENT, -> PRIMARY KEY(StudentId) -> ); Query OK, 0 rows affected (0.53 sec)
Insert some records in the table using insert −
mysql> insert into DemoTable1399 values(); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable1399 values(); Query OK, 1 row affected (0.11 sec) mysql> insert into DemoTable1399 values(); Query OK, 1 row affected (0.07 sec)
Display all records from the table using select −
mysql> select * from DemoTable1399;
This will produce the following output −
+-----------+ | StudentId | +-----------+ | 1 | | 2 | | 3 | +-----------+ 3 rows in set (0.00 sec)
Here is the query to get the next primary key without adding a new record −
mysql> select auto_increment as NextPrimaryKey -> from information_schema.tables -> where table_schema=database() -> and table_name = 'DemoTable1399';
This will produce the following output −
+----------------+ | NextPrimaryKey | +----------------+ | 4 | +----------------+ 1 row in set (0.00 sec)
Updated on: 11-Nov-2019
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