1609
MySQLERRORCommonPartitioningHIGH confidence
Partition fields too long
Production Risk
Low — the DDL fails; no table is created.
What this means
The total length of all columns in a COLUMNS partition definition exceeds the allowed maximum.
Why it happens
- 1The combined byte length of all columns in a RANGE COLUMNS or LIST COLUMNS definition exceeds the limit.
How to reproduce
trigger — this will error
trigger — this will error
-- Using many long VARCHAR columns in COLUMNS partition list
expected output
ERROR 1609 (HY000): The total length of the partitioning fields is too large
Fix
Reduce the number or size of COLUMNS partition fields
Reduce the number or size of COLUMNS partition fields
-- Use fewer columns or shorter column types in the COLUMNS list.
Why this works
The combined byte size of all COLUMNS partition fields must stay within MySQL's internal limit.
Sources
Official documentation ↗
MySQL 8.0 — 1609 ER_PARTITION_FIELDS_TOO_LONG
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