Next, the following INSERT statement inserts three rows into the items table. Whenever you insert a new row into the items table, the value of the item_id column is increased by 1. You can use either INT or INTEGER in the CREATE TABLE statement above because they are interchangeable.
) Code language: SQL (Structured Query Language) ( sql ) In addition, the sequence is reset to the next value of the inserted value.įirst, create a new table named items with an integer column as the primary key: CREATE TABLE items ( When you insert a value, which is not NULL or zero, into the AUTO_INCREMENT column, the column accepts the value. Notice that the sequence value starts with 1. When you insert a NULL value or 0 into the INT AUTO_INCREMENT column, the value of the column is set to the next sequence value. In addition, the INT column can have an AUTO_INCREMENT attribute. A) Using MySQL INT for a column exampleīecause integer type represents exact numbers, you usually use it as the primary key of a table. Let’s look at some examples of using integer data type. The following table illustrates the characteristics of each integer type including storage in bytes, minimum value, and maximum value. MySQL INT data type can be signed and unsigned. In addition, MySQL provides TINYINT MEDIUMINT, and BIGINT as extensions to the SQL standard. MySQL supports all standard SQL integer types INTEGER or INT and SMALLINT. An integer can be zero, positive, and negative. An integer can be written without a fractional component e.g., 1, 100, 4, -10, and it cannot be 1.2, 5/3, etc. In MySQL, INT stands for the integer that is a whole number.
#Mysql create table in database how to
In addition, we will show you how to use the display width and ZEROFILL attributes of an integer column.
Summary: in this tutorial, you will learn about MySQL INT or integer data type and how to use it in your database table design.
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