Which Is Not a Data Type in MySQL?


Angela Bailey

In MySQL, there are several data types available to store different types of data. These data types define the characteristics of the values that can be stored in a column or variable. However, there is one data type that is not found in MySQL – the boolean data type.

What Are Data Types?

Data types are used to categorize and define the type of data that can be stored in a column or variable. They determine how much space is allocated for the data and what operations can be performed on it.

MySQL provides a wide range of data types, including numeric, string, date and time, and spatial data types. Each data type has its own set of properties and behaviors.

The Boolean Data Type

A boolean data type is used to represent two states: true or false. It is commonly used in programming to store binary values or to evaluate conditions.

However, MySQL does not have a separate boolean data type. Instead, it uses the TINYINT (or BOOL) data type to represent boolean values. The TINYINT(1) data type is commonly used to store boolean values where 0 represents false and any non-zero value represents true.

Difference Between TINYINT(1) and BOOLEAN

The TINYINT(1) and BOOLEAN are essentially the same in MySQL. They both store boolean values, but BOOLEAN is just an alias for TINYINT(1).

The advantage of using TINYINT(1) over BOOLEAN is that it provides more flexibility when it comes to storing other numeric values. You can use TINYINT(1) to store other integer values as well as boolean values.

Other Commonly Used Data Types in MySQL

While MySQL does not have a boolean data type, it offers a wide range of other data types to suit various needs. Some commonly used data types in MySQL include:

  • INT: Used to store whole numbers.
  • VARCHAR: Used to store variable-length character strings.
  • DATE: Used to store date values in the format ‘YYYY-MM-DD’.
  • DATETIME: Used to store date and time values in the format ‘YYYY-MM-DD HH:MM:SS’.
  • TEXT: Used to store large amounts of text data.


In conclusion, while MySQL does not have a specific boolean data type, it uses the TINYINT(1) data type as an alternative. It is important to understand the differences between TINYINT(1) and BOOLEAN and choose the appropriate one based on your specific requirements. Additionally, MySQL offers a wide range of other data types that cater to different types of data you may need to store.

By familiarizing yourself with these different data types, you can effectively organize and structure your database tables or variables and ensure that they are optimized for storing and manipulating your data efficiently.

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