EC
1710
MySQLERRORNotableTriggersHIGH confidence

Error in the body of trigger

Production Risk

High — all DML triggering the affected trigger will fail.

What this means

MySQL detected a runtime or parse error in the body of a named trigger during execution or loading.

Why it happens
  1. 1Trigger body references a column or table that no longer exists.
  2. 2Syntax error introduced during manual edit of trigger definition.
  3. 3Underlying stored routine called by the trigger was dropped.
How to reproduce
trigger — this will error
trigger — this will error
-- Trigger fires on INSERT but references a dropped column:
CREATE TRIGGER t_ins AFTER INSERT ON t FOR EACH ROW SET @v = NEW.dropped_col;

expected output

ERROR 1710 (HY000): Error in body of trigger 't_ins'. Error during trigger execution.

Fix

Drop and recreate the trigger with a corrected body

Drop and recreate the trigger with a corrected body
DROP TRIGGER IF EXISTS t_ins;
CREATE TRIGGER t_ins AFTER INSERT ON t FOR EACH ROW SET @v = NEW.valid_col;

Why this works

Recreating the trigger with corrected column references resolves the body error.

What not to do

✕

Sources
Official documentation ↗

MySQL 8.0 — 1710 ER_ERROR_IN_TRIGGER_BODY

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