3336
MySQLERRORNotableSpatial / GISHIGH confidence

Cannot perform spatial operation on geometries with different SRIDs

Production Risk

Low — query fails; no data is modified.

How to reproduce
trigger — this will error
trigger — this will error
SELECT ST_Distance(ST_GeomFromText('POINT(0 0)', 4326), ST_GeomFromText('POINT(0 0)', 3857));

expected output

ERROR 3336 (HY000): Binary geometry function ST_Distance given two geometries of different SRIDs.

Fix

Use ST_Transform

Use ST_Transform
SELECT ST_Distance(ST_Transform(g1, 4326), g2) FROM geom_table;

Why this works

ST_Transform reprojects geometry to the target SRS before comparison.

What not to do

Sources
Official documentation ↗

MySQL 8.0 — 3336 ER_TRANSFORM_DIFFERENT_SRIDS

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