1318
MySQLerrorstored-procedureshigh confidence
Cursor is not open
Production Risk
Low — runtime error inside stored routine.
What this means
FETCH or CLOSE was called on a cursor that has not been opened.
Why it happens
- 1Forgetting to call OPEN before FETCH
- 2Handler or early exit path bypassed the OPEN statement
How to reproduce
trigger — this will error
trigger — this will error
FETCH cur INTO v; -- without prior OPEN cur
expected output
ERROR 1318 (24000): Cursor is not open
Fix
Open the cursor first
Open the cursor first
OPEN cur; FETCH cur INTO v;
Why this works
Always OPEN before FETCH.
Sources
Official documentation ↗
MySQL 8.0 — 1318 ER_SP_CURSOR_NOT_OPEN
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