https://dev.mysql.com/miscellaneous-optimization-tips.html
If you have data that does not conform well to a rows-and-columns table structure, you can pack and store data into a BLOB column. This section lists a number of miscellaneous tips for improving query processing speed: If your application makes ...
https://dev.mysql.com/myisam-maintenance-schedule.html
If you are performing many updates to MyISAM tables with dynamic-sized rows (tables with VARCHAR, BLOB, or TEXT columns) or have tables with many deleted rows you may want to defragment/reclaim space from the tables from time to time. It is a good ...
https://dev.mysql.com/myisam-table-formats.html
When you use CREATE TABLE or ALTER TABLE for a table that has no BLOB or TEXT columns, you can force the table format to FIXED or DYNAMIC with the ROW_FORMAT table option. Two of them, fixed and dynamic format, are chosen automatically depending on ...
https://dev.mysql.com/mysql-cluster-disk-data-storage-requirements.html
In a Disk Data table, the first 256 bytes of a TEXT or BLOB column are stored in memory; only the remainder is stored on disk. The following items apply to Disk Data storage requirements: Variable-length columns of Disk Data tables take up a fixed ...
https://dev.mysql.com/mysql-cluster-limitations-database-objects.html
Each BLOB or TEXT column contributes 256 + 8 = 264 bytes to this total; this includes JSON columns. Some database objects such as tables and indexes have different limitations when using the NDBCLUSTER storage engine: Number of database objects.
https://dev.mysql.com/mysql-cluster-limitations-exclusive-to-cluster.html
NDB Cluster cannot produce a binary log for tables having BLOB columns but no primary key. The following are limitations specific to the NDB storage engine: Machine architecture. All machines used in the cluster must have the same architecture.
https://dev.mysql.com/mysql-cluster-ndb-innodb-usage.html
When comparing application feature requirements to the capabilities of InnoDB with NDB, some are clearly more compatible with one storage engine than the other. The following table lists supported application features according to the storage ...
https://dev.mysql.com/mysql-cluster-ndbinfo-transporters.html
The following table provides information about the columns in the transporters table. For each column, the table shows the name, data type, and a brief description. Additional information can be found in the notes following the table. This ...
https://dev.mysql.com/mysql-cluster-online-operations.html
Columns to be added online cannot use the BLOB or TEXT type, and must meet the following criteria: The columns must be dynamic; that is, it must be possible to create them using COLUMN_FORMAT DYNAMIC. MySQL NDB Cluster 8.0 supports online table ...
https://dev.mysql.com/mysql-cluster-what-is-new.html
A BLOB or TEXT column continues to use 264 bytes of this total, as before. The following sections describe changes in the implementation of NDB Cluster in MySQL NDB Cluster 8.0 through 8.0.20, as compared to earlier release series. NDB Cluster 7.4 ...
