EC
1506
MariaDBERRORNotablePartitioningHIGH confidence

Too many partitions defined

Production Risk

Low — DDL error; the table will not be created.

What this means

ER_TOO_MANY_PARTITIONS_ERROR (1506, SQLSTATE HY000) is raised when a table definition would result in more than the maximum allowed number of partitions (8192).

Why it happens
  1. 1PARTITIONS N set higher than the maximum (8192)
  2. 2Subpartitioning causing the total partition count to exceed 8192
How to reproduce
trigger — this will error
trigger — this will error
CREATE TABLE t (id INT)
PARTITION BY HASH(id) PARTITIONS 10000;  -- Exceeds max

expected output

ERROR 1506 (HY000): Too many partitions (including subpartitions) were defined

Fix

Reduce the number of partitions below 8192

Reduce the number of partitions below 8192
CREATE TABLE t (id INT)
PARTITION BY HASH(id) PARTITIONS 1024;  -- Within limit

Why this works

MySQL supports a maximum of 8192 partitions (including subpartitions) per table.

Sources
Official documentation ↗

MySQL 8.0 — 1506 ER_TOO_MANY_PARTITIONS_ERROR

Content generated with AI assistance and reviewed for accuracy. Found an error? hello@errcodes.dev

← All MariaDB errors