EC
1514
MySQLERRORNotablePartitioningHIGH confidence

Specified partition does not exist

Production Risk

Low — the ALTER TABLE fails; no data is deleted.

What this means

ER_DROP_PARTITION_NON_EXISTENT (1514, SQLSTATE HY000) is raised when ALTER TABLE DROP PARTITION references a partition name that does not exist in the table.

Why it happens
  1. 1Typo in the partition name in the DROP PARTITION command
  2. 2Attempting to drop a partition that was already dropped or never existed
How to reproduce
trigger — this will error
trigger — this will error
ALTER TABLE t DROP PARTITION nonexistent_partition;

expected output

ERROR 1514 (HY000): Error in list of partitions to DROP

Fix

Verify partition names before dropping

Verify partition names before dropping
-- List existing partitions:
SELECT PARTITION_NAME FROM information_schema.PARTITIONS
WHERE TABLE_SCHEMA = 'mydb' AND TABLE_NAME = 't';

-- Drop the correct partition:
ALTER TABLE t DROP PARTITION p0;

Why this works

Verifying partition names against information_schema.PARTITIONS prevents drop errors.

Sources
Official documentation ↗

MySQL 8.0 — 1514 ER_DROP_PARTITION_NON_EXISTENT

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