BLOB and TEXT Data Types
Description
A BLOB is a binary large object that can hold a variable amount of
data. The four BLOB types are
- TINYBLOB,
- BLOB,
- MEDIUMBLOB, and
- LONGBLOB.
These differ only in the maximum length of the values they can hold.
The TEXT types are
- TINYTEXT,
- TEXT,
- MEDIUMTEXT, and
- LONGTEXT.
- JSON (alias for LONGTEXT)
These correspond to the four BLOB types and have the same
maximum lengths and storage requirements.
BLOB and TEXT columns can have a DEFAULT value.
MariaDB starting with 10.4.3
From MariaDB 10.4, it is possible to set a unique index on columns that use the BLOB or TEXT data types.
See Also
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