May 07, 2015 The following steps show how to create an SQL create script using phpMyAdmin. This can be helpful if you have a custom table in a development environment and need to recreate it in the producation environment, or need to automate the create table.
Summary: in this tutorial, you will learn how to use MySQL primary key constraint to create the primary key for a table.
Introduction to MySQL primary key
A primary key is a column or a set of columns that uniquely identifies each row in the table. The primary key follows these rules:
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Because MySQL works faster with integers, the data type of the primary key column should be the integer e.g.,
INT, BIGINT . And you should ensure sure that value ranges of the integer type for the primary key are sufficient for storing all possible rows that the table may have.
A primary key column often has the
AUTO_INCREMENT attribute that automatically generates a sequential integer whenever you insert a new row into the table.
When you define a primary key for a table, MySQL automatically creates an index called
PRIMARY .
Php My Admin Generate Primary Key On Insert In ExcelMySQL
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