MySQL
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MySQL | BLOB
schedule Aug 12, 2023
Last updated local_offer
Tags MySQL
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In order to store binary data such as images in MySQL, we can use one of the following datatypes (L is the length in bytes):
Data Type | Storage Required | Maximum Storage |
|---|---|---|
TINYBLOB | L+1 bytes, where L < $2^8$ | 255 B |
BLOB | L+2 bytes, where L < $2^{16}$ | 64 KB |
MEDIUMBLOB | L+3 bytes, where L < $2^{24}$ | 16 MB |
LONGBLOB | L+4 bytes, where L < $2^{32}$ | 4GB |
Note that unlike BINARY, there will be no padding inserted, which allows us to save a lot of space.
NOTE
The downside of using the TEXT data type is that, they are not stored in memory; when we query for them, they are read from the disk, which is considerably a lot slower. This is simply because the INNODB memory engine does not support the TEXT data type.
Published by Arthur Yanagisawa
Edited by 0 others
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Official MySQL Documentation
https://dev.mysql.com/doc/refman/8.0/en/blob.html
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