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TINYTEXT

Syntax

TINYTEXT [CHARACTER SET charset_name] [COLLATE collation_name]

Description

A TEXT column with a maximum length of 255 (28 - 1) characters. The effective maximum length is less if the value contains multi-byte characters. Each TINYTEXT value is stored using a one-byte length prefix that indicates the number of bytes in the value.

EXAMPLES

TINYTEXT

Example of TINYTEXT:

CREATE TABLE tinytext_example (
   description VARCHAR(20),
   example TINYTEXT
) DEFAULT CHARSET=latin1; -- One byte per char makes the examples clearer
INSERT INTO tinytext_example VALUES
   ('Normal foo', 'foo'),
   ('Trailing spaces foo', 'foo      '),
   ('NULLed', NULL),
   ('Empty', ''),
   ('Maximum', RPAD('', 255, 'x'));
SELECT description, LENGTH(example) AS length
   FROM tinytext_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 TINYTEXT:

TRUNCATE tinytext_example;

INSERT INTO tinytext_example VALUES
   ('Overflow', RPAD('', 256, 'x'));
ERROR 1406 (22001): Data too long for column 'example' at row 1

See Also

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