分类管理

2024-09-10 16:04:46 +08:00
parent d6471726b9
commit 241afd6478
4 changed files with 53 additions and 4 deletions
--- a/sky-server/src/main/java/com/sky/mapper/DishMapper.java
+++ b/sky-server/src/main/java/com/sky/mapper/DishMapper.java
@@ -0,0 +1,17 @@
+package com.sky.mapper;
+
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Select;
+
+@Mapper
+public interface DishMapper {
+
+    /**
+     * 根据分类id查询菜品数量
+     * @param categoryId
+     * @return
+     */
+    @Select("select count(id) from dish where category_id = #{categoryId}")
+    Integer countByCategoryId(Long categoryId);
+
+}