1601
MySQLERRORNotableReplicationHIGH confidence
Stored function prevents switching binlog format (session-level)
Production Risk
Low — the SET is blocked safely.
What this means
Session-level variant: cannot change binlog_format inside an executing stored function or trigger.
Why it happens
- 1SET SESSION binlog_format was issued from within a stored function or trigger body.
How to reproduce
trigger — this will error
trigger — this will error
-- Inside a stored function body: SET SESSION binlog_format = 'ROW';
expected output
ERROR 1601 (HY000): Cannot change the binlog direct flag inside a stored function or trigger
Fix
Change binlog_format before invoking the routine
Change binlog_format before invoking the routine
SET SESSION binlog_format = 'ROW'; CALL my_procedure();
Why this works
binlog_format must be set outside the scope of any executing stored routine.
Version notes
Sources
Official documentation ↗
MySQL 8.0 — 1601 ER_STORED_FUNCTION_PREVENTS_SWITCH_OUT_OF_RBR
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