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wms-module-system/src/main/resources/mapper/RuleRelationMapper.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
+<mapper namespace="top.ysoft.admin.system.mapper.RuleRelationMapper">
+
+
+    <delete id="deleteByRuleId" parameterType="top.ysoft.admin.system.model.entity.RuleRelationDO">
+        DELETE FROM equipment_rule_relation
+        WHERE 1=1
+        <!-- 判空规则：字段不为 null 且 不为空字符串（兼容字符串/数字类型） -->
+        <if test="ruleId != null and ruleId != ''">
+            AND rule_id = #{ruleId}
+        </if>
+        <if test="equipmentId != null and equipmentId != ''">
+            AND equipment_id = #{equipmentId}
+        </if>
+        <if test="equipmentRuleId != null and equipmentRuleId != ''">
+            AND equipment_rule_id = #{equipmentRuleId}
+        </if>
+    </delete>
+
+</mapper>