diff --git a/12-dev-guide/12-2-9-dp-partition.md b/12-dev-guide/12-2-9-dp-partition.md
index 20f265d7daa3871ab2c09f7f35814a26dd8e3841..bad830e1caa88f6710dadc055bc3bad47c550d8a 100644
--- a/12-dev-guide/12-2-9-dp-partition.md
+++ b/12-dev-guide/12-2-9-dp-partition.md
@@ -211,7 +211,7 @@ greatsql> CREATE TABLE customers1 (
     region_id INT,
     city_id INT
 )
-PARTITION BY LIST COLUMNS (region_id, city) (
+PARTITION BY LIST COLUMNS (region_id, city_id) (
  PARTITION pNorth VALUES IN ((1, 1), (1, 2), (1, 3)),
  PARTITION pSouth VALUES IN ((2, 4), (2, 5), (2, 6)),
  PARTITION pEast VALUES IN ((3, 7), (3, 8), (3, 9)),