1608
MySQLERRORCommonPartitioningHIGH confidence
Field type not allowed as partition field
Production Risk
Low — the DDL fails; no table is created.
What this means
The data type of the column used in partitioning is not allowed for the chosen partition type.
Why it happens
- 1Using a BLOB, TEXT, FLOAT, DOUBLE, or DECIMAL column as a partitioning key.
- 2Using a GEOMETRY column in a COLUMNS partition.
How to reproduce
trigger — this will error
trigger — this will error
CREATE TABLE t (id INT, txt TEXT) PARTITION BY KEY(txt) PARTITIONS 4;
expected output
ERROR 1608 (HY000): Field 'txt' is of a not allowed type for this type of partitioning
Fix
Use integer or date/string columns supported for partitioning
Use integer or date/string columns supported for partitioning
CREATE TABLE t (id INT, txt TEXT) PARTITION BY KEY(id) PARTITIONS 4;
Why this works
KEY and HASH partitioning support integer types; COLUMNS partitioning adds date and string support but not BLOB/TEXT.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 1608 ER_FIELD_TYPE_NOT_ALLOWED_AS_PARTITION_FIELD
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