EC
1712
MySQLERRORCriticalQueryHIGH confidence

EXPLAIN is not supported for this statement

Production Risk

Low — command fails; no data affected.

What this means

An EXPLAIN prefix was used with a statement type that does not support it, such as EXPLAIN INSERT or EXPLAIN CALL.

Why it happens
  1. 1Prefixing a non-SELECT/DML statement with EXPLAIN.
How to reproduce
trigger — this will error
trigger — this will error
EXPLAIN CALL my_procedure();

expected output

ERROR 1712 (HY000): EXPLAIN is not supported for this statement.

Fix

Use EXPLAIN only with supported statement types

Use EXPLAIN only with supported statement types
EXPLAIN SELECT * FROM t WHERE id = 1;
EXPLAIN UPDATE t SET col = 1 WHERE id = 1; -- supported in MySQL 5.6+

Why this works

EXPLAIN supports SELECT and, since 5.6, DML (INSERT/UPDATE/DELETE/REPLACE) but not CALL or DDL.

What not to do

✕

Sources
Official documentation ↗

MySQL 8.0 — 1712 ER_EXPLAIN_NOT_SUPPORTED

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