Some database objects such as tables and indexes have different
limitations when using the
NDBCLUSTER storage engine:
Database and table names.
When using the NDB storage engine, the
maximum allowed length both for database names and for
table names is 63 characters.
In 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
NDB database objects in a
single NDB 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.
Row size.
The maximum permitted size of any one row is 14000 bytes.
Each BLOB or
TEXT column contributes 256
+ 8 = 264 bytes to this total.
BIT column storage per table.
The maximum combined width for all
BIT columns used in a given
NDB table is 4096.
FIXED column storage.
NDB Cluster supports a maximum of 16 GB per fragment of
data in FIXED columns.