SQLite AUTOINCREMENT

AUTOINCREMENT keyword is used to increase the value of the field automatically. We need to use the autoincrement keyword to increase the field(column) value and it only works for the INTEGER fields. Autoincrement is used only with the columns that act as the primary keys because we use it only for the employee_id, and student_id i.e. for the id’s and roll numbers that have sequential numbers as their values for the fields. This primary key acts as a foreign key for the other table.

Syntax:

CREATE TABLE table_name(
column1 INTEGER AUTOINCREMENT,
column2 datatype,
column3 datatype,
.....
columnN datatype,
);

SQLite Autoincrement

SQLite is a serverless database engine written in c programming language. It is one of the most used database engines in our everyday life like Mobile Phones, TV, and so on, etc.

In this article, we will be learning about autoincrement in SQLite, its functionality, and how it works along with the examples and we will also be covering without autoincrement too.

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SQLite AUTOINCREMENT

AUTOINCREMENT keyword is used to increase the value of the field automatically. We need to use the autoincrement keyword to increase the field(column) value and it only works for the INTEGER fields. Autoincrement is used only with the columns that act as the primary keys because we use it only for the employee_id, and student_id i.e. for the id’s and roll numbers that have sequential numbers as their values for the fields. This primary key acts as a foreign key for the other table....

Example: SQLite without Autoincrement

SQLite without AUTOINCREMENT...

Example: SQLite AUTOINCREMENT

For understanding of AUTOINCREMENT concepts in more deeply, we need a table on which we will perform the operations. Let’s create a table called faculty which consist Id, name, salary, dept as Columns. Since AUTOINCREMENT keyword works only on the columns which INTEGER values in it. Here all the columns are of INTEGER data types and we make Id column as a PRIMARY KEY....

Conclusion

So, the main usage of autoincrement is not to use the repeated values and to use unique values for the rows. Autoincrement key is used with the primary key only that means for the columns that are to be incemented in the sequential order. Coming to the Rowid it is the Default keyword, that need not be specified while creating the table but, if you want to see it in the output you need to use thr Rowid keyword in the select table to fetch it....