Some database objects such as tables and indexes have different
limitations when using the
NDBCLUSTER storage engine:
Database and table names. When using the
NDBstorage engine, the maximum allowed length both for database names and for table names is 63 characters.
In MySQL Cluster NDB 7.3.8 and later, a statement using a database name or table name longer than this limit fails with an appropriate error. (Bug #19550973)
Number of database objects. The maximum number of all
NDBdatabase objects in a single MySQL Cluster—including databases, tables, and indexes—is limited to 20320.
Attributes per table. The maximum number of attributes (that is, columns and indexes) that can belong to a given table is 512.
Attributes per key. The maximum number of attributes per key is 32.
BIT column storage per table. The maximum combined width for all
BITcolumns used in a given
NDBtable is 4096.
FIXED column storage. MySQL Cluster supports a maximum of 16 GB per fragment of data in