1391
MySQLerrorddlhigh confidence

Cannot use temporary table with partitions

Production Risk

Low — DDL fails; no data affected.

What this means

An attempt was made to create a TEMPORARY table with a PARTITION BY clause, which is not supported.

Why it happens
  1. 1CREATE TEMPORARY TABLE with PARTITION BY clause
How to reproduce
trigger — this will error
trigger — this will error
CREATE TEMPORARY TABLE t (id INT) PARTITION BY HASH(id) PARTITIONS 4;

expected output

ERROR 1391 (HY000): Cannot use temporary table with partitions

Fix

Remove TEMPORARY or remove PARTITION BY

Why this works

MySQL does not support partitioned temporary tables; choose one or the other.

Sources
Official documentation ↗

MySQL 8.0 — 1391 ER_PARTITION_NO_TEMPORARY

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