diff --git a/src/main/resources/db/migration/V13__add_product_size_fields.sql b/src/main/resources/db/migration/V13__add_product_size_fields.sql
index 1cf0edf..cc3a96b 100644
--- a/src/main/resources/db/migration/V13__add_product_size_fields.sql
+++ b/src/main/resources/db/migration/V13__add_product_size_fields.sql
@@ -1,4 +1,7 @@
 -- 添加商品长度、宽度、面积字段
-ALTER TABLE products ADD COLUMN length DECIMAL(10,2) COMMENT '长度(mm)';
-ALTER TABLE products ADD COLUMN width DECIMAL(10,2) COMMENT '宽度(mm)';
-ALTER TABLE products ADD COLUMN area DECIMAL(10,4) COMMENT '面积(m²)';
\ No newline at end of file
+ALTER TABLE products ADD COLUMN length DECIMAL(10,2);
+COMMENT ON COLUMN products.length IS '长度(mm)';
+ALTER TABLE products ADD COLUMN width DECIMAL(10,2);
+COMMENT ON COLUMN products.width IS '宽度(mm)';
+ALTER TABLE products ADD COLUMN area DECIMAL(10,4);
+COMMENT ON COLUMN products.area IS '面积(m²)';
\ No newline at end of file