3357
MySQLERRORNotableDDL / IndexesHIGH confidence
Functional index cannot be a spatial index
Production Risk
Low — DDL fails; no index is created.
How to reproduce
trigger — this will error
trigger — this will error
CREATE SPATIAL INDEX sp_idx ON t ((ST_Buffer(geom, 1)));
expected output
ERROR 3357 (HY000): Cannot create a functional index with index type SPATIAL.
Fix
Use a plain SPATIAL index
Use a plain SPATIAL index
CREATE SPATIAL INDEX sp_idx ON t (geom);
Why this works
Spatial indexes require the raw geometry column, not a derived expression.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 3357 ER_SPATIAL_FUNCTIONAL_INDEX
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