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How to insert a row into a table that has only a single autoincrement column?
You can easily insert a row into a table that has only a single auto increment column. The syntax is as follows −
insert into yourTableName set yourColumnName =NULL;
You can use the below syntax −
insert into yourTableName values(NULL);
To understand the above syntax, let us create a table. The query to create a table is as follows −
mysql> create table singleAutoIncrementColumnDemo -> ( -> UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY -> ); Query OK, 0 rows affected (0.62 sec)
Insert some records in the table using insert command. The query is as follows −
mysql> insert into singleAutoIncrementColumnDemo set UserId =NULL; Query OK, 1 row affected (0.18 sec) mysql> insert into singleAutoIncrementColumnDemo values(NULL); Query OK, 1 row affected (0.11 sec)
Display all records from the table using select statement. The query is as follows −
mysql> select *from singleAutoIncrementColumnDemo;
Here is the output −
+--------+ | UserId | +--------+ | 1 | | 2 | +--------+ 2 rows in set (0.00 sec)
Updated on: 30-Jul-2019
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