TINYINT Data Type in MySQL
In MySQL, TINYINT
is a data type used to store small integer values. Let’s delve into its specifics and see how it compares to other integer types:
TINYINT
- Storage:
TINYINT
Uses 1 byte of storage. - Range:
- If signed (allows both positive and negative values):
-128
to127
- If unsigned (only non-negative values):
0
to255
Comparison with Other Integer Types:
- SMALLINT
- Storage: 2 bytes
- Range:
- Signed:
-32,768
to32,767
- Unsigned:
0
to65,535
- Signed:
- MEDIUMINT
- Storage: 3 bytes
- Range:
- Signed:
-8,388,608
to8,388,607
- Unsigned:
0
to16,777,215
- Signed:
- INT or INTEGER
- Storage: 4 bytes
- Range:
- Signed:
-2,147,483,648
to2,147,483,647
- Unsigned:
0
to4,294,967,295
- Signed:
- BIGINT
- Storage: 8 bytes
- Range:
- Signed:
-9,223,372,036,854,775,808
to9,223,372,036,854,775,807
- Unsigned:
0
to18,446,744,073,709,551,615
- Signed:
Key Differences:
- Storage Size: The primary difference among these integer types is the amount of storage they use, which ranges from 1 byte for
TINYINT
to 8 bytes forBIGINT
. - Range: With increasing storage size, the range of values each type can store increases.
TINYINT
is suitable for tiny numbers, whileBIGINT
can handle huge numbers. - Use Cases: The choice of integer type often depends on the use case. For instance,
TINYINT
might be used for storing age (assuming age won’t exceed 255) whileBIGINT
might be used for unique identifiers that require a vast range.
When designing a database schema, choosing the appropriate integer type based on the expected range of values is essential to optimize storage and performance.