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.
Table names containing special characters.
NDB tables whose names
contain characters other than letters, numbers, dashes,
and underscores and which are created on one SQL node were
not always discovered correctly by other SQL nodes. (Bug
This issue was fixed in MySQL 5.1.23, MySQL Cluster NDB 6.2.7, and MySQL Cluster NDB 6.3.4.
Number of database objects.
The maximum number of all
NDB database objects in a
single MySQL Cluster—including databases, tables,
and indexes—is limited to 20320.
Attributes per table. Prior to MySQL Cluster NDB 7.0.15 and MySQL Cluster NDB 7.1.4, the maximum number of attributes (that is, columns and indexes) per table is limited to 128.
Beginning with MySQL Cluster NDB 7.0.15 and MySQL Cluster NDB 7.1.4, this limit is increased to 512.
Attributes per key. The maximum number of attributes per key is 32.
Prior to MySQL Cluster NDB 7.0, the maximum permitted size
of any one row was 8052 bytes; in MySQL Cluster NDB 7.0
and later, this is 14000 bytes. Each
TEXT column contributes 256
+ 8 = 264 bytes to this total.