Oracle 5.0 Reference Manual page 1543

database at http://bugs.mysql.com, you can find known bugs in the following categories under "MySQL
Server:" in the MySQL bugs database at http://bugs.mysql.com, which we intend to correct in upcoming
releases of MySQL Cluster:
• Cluster
• Cluster Direct API (NDBAPI)
• Cluster Disk Data
• Cluster Replication
This information is intended to be complete with respect to the conditions just set forth. You can report
any discrepancies that you encounter to the MySQL bugs database using the instructions given in
Section 1.7, "How to Report Bugs or
will add it to the list.
See Section 17.1.5.10, "Previous MySQL Cluster Issues Resolved in MySQL 5.0"
MySQL Cluster in MySQL 4.1 that have been resolved in the current version.
17.1.5.1. Noncompliance with SQL Syntax in MySQL Cluster
Some SQL statements relating to certain MySQL features produce errors when used with
as described in the following list:
• Temporary tables.
that uses the
error
Table storage engine 'ndbcluster' does not support the create option
'TEMPORARY'.
• Indexes and keys in
following limitations:
• Column width.
than 3072 bytes succeeds, but only the first 3072 bytes are actually used for the index. In such
cases, a warning
issued, and a
• and
TEXT
or
TEXT
•
FULLTEXT
possible for
However, you can create indexes on
•
USING HASH
that queries using these columns are handled as full table scans. To work around this issue, make
the column
• Prefixes.
column index is always the same as the width of the column in bytes, up to and including 3072
bytes, as described earlier in this section. Also see
Features in MySQL
• columns.
BIT
of a composite primary key, unique key, or index.
•
AUTO_INCREMENT
can handle a maximum of one
Cluster table with no explicit primary key, an
Known Limitations of MySQL Cluster
Temporary tables are not supported. Trying either to create a temporary table
storage engine or to alter an existing temporary table to use
NDB
tables.
NDB
Attempting to create an index on an
Specified key was too long; max key length is 3072 bytes
SHOW CREATE TABLE
columns. You cannot create indexes on
BLOB
data types.
BLOB
indexes. The
NDB
tables only.
MyISAM
keys and NULL.
NULL, or re-create the index without the
NOT
There are no prefix indexes; only entire columns can be indexed. (The size of an
Cluster", for additional information.)
A column cannot be a primary key, unique key, or index, nor can it be part
BIT
columns.
AUTO_INCREMENT
Problems". If we do not plan to fix the problem in MySQL 5.0, we
Keys and indexes on MySQL Cluster tables are subject to the
statement shows the length of the index as 3072.
storage engine does not support
columns of
VARCHAR
Using nullable columns in unique keys and primary keys means
Section 17.1.5.6, "Unsupported or Missing
Like other MySQL storage engines, the
column per table. However, in the case of a
AUTO_INCREMENT
1523
for a list of issues in
NDB
table column whose width is greater
NDB
table columns that use any of the
NDB
FULLTEXT
tables.
NDB
option.
USING HASH
storage engine
NDB
column is automatically defined
tables,
NDB
fails with the
is
indexes, which are
NDB