TINYBLOB

Very small binary object. A TINYBLOB column can store up to 255 bytes of binary data.

Syntax

TINYBLOB

Description

A BLOB column with a maximum length of 255 (2⁸ - 1) bytes. Each TINYBLOB value is stored using a one-byte length prefix that indicates the number of bytes in the value.

EXAMPLES

TINYBLOB

Example of TINYBLOB:

CREATE TABLE tinyblob_example (
   description VARCHAR(20),
   example TINYBLOB
) DEFAULT CHARSET=latin1; -- One byte per char makes the examples clearer

INSERT INTO tinyblob_example VALUES
   ('Normal foo', 'foo'),
   ('Trailing spaces foo', 'foo      '),
   ('NULLed', NULL),
   ('Empty', ''),
   ('Maximum', RPAD('', 255, CHAR(7)));

SELECT description, LENGTH(example) AS length
   FROM tinyblob_example;

+---------------------+--------+
| description         | length |
+---------------------+--------+
| Normal foo          |      3 |
| Trailing spaces foo |      9 |
| NULLed              |   NULL |
| Empty               |      0 |
| Maximum             |    255 |
+---------------------+--------+

Data too Long

When SQL_MODE is strict (the default), a value is considered "too long" when its length exceeds the size of the data type, and an error is generated.

Example of data too long behavior for TINYBLOB:

TRUNCATE tinyblob_example;

INSERT INTO tinyblob_example VALUES
   ('Overflow', RPAD('', 256, CHAR(7)));

ERROR 1406 (22001): Data too long for column 'example' at row 1

See Also

• BLOB

• BLOB and TEXT Data Types

• Data Type Storage Requirements

_{This page is licensed: GPLv2, originally from fill_help_tables.sql}