l3能源成本分摊（部分完成留存）

klp-ems/src/main/resources/mapper/EmsEnergyConsumptionMapper.xml

@@ -101,4 +101,66 @@
         </if>
     </select>
 
+    <select id="selectLatestBefore" resultMap="EmsEnergyConsumptionResult">
+        SELECT *
+        FROM ems_energy_consumption
+        WHERE meter_id = #{meterId}
+          AND end_time &lt;= #{endTime}
+        ORDER BY end_time DESC
+        LIMIT 1
+    </select>
+
+    <select id="selectOverlapRange" resultMap="EmsEnergyConsumptionResult">
+        SELECT *
+        FROM ems_energy_consumption
+        WHERE meter_id = #{meterId}
+          AND end_time &gt;= #{startTime}
+          AND start_time &lt;= #{endTime}
+        ORDER BY start_time ASC
+    </select>
+
+    <select id="selectCoveringRange" resultMap="EmsEnergyConsumptionResult">
+        SELECT *
+        FROM ems_energy_consumption
+        WHERE meter_id = #{meterId}
+          AND start_time &lt;= #{startTime}
+          AND end_time &gt;= #{endTime}
+        ORDER BY start_time ASC
+        LIMIT 1
+    </select>
+
+    <select id="selectLatestTwoReadings" resultMap="EmsEnergyConsumptionResult">
+        SELECT *
+        FROM ems_energy_consumption
+        WHERE meter_id = #{meterId}
+        ORDER BY end_time DESC
+        LIMIT 2
+    </select>
+
+    <!-- 统计查询 -->
+    <select id="getStatistics" parameterType="com.klp.ems.domain.bo.EmsEnergyConsumptionBo" resultType="java.util.Map">
+        SELECT
+            COUNT(*) AS totalCount,
+            IFNULL(SUM(consumption), 0) AS totalConsumption,
+            IFNULL(AVG(consumption), 0) AS avgConsumption,
+            IFNULL(MAX(consumption), 0) AS maxConsumption,
+            IFNULL(MIN(consumption), 0) AS minConsumption
+        FROM ems_energy_consumption
+        WHERE 1=1
+        <if test="meterId != null">
+            AND meter_id = #{meterId}
+        </if>
+        <if test="energyTypeId != null">
+            AND meter_id IN (
+                SELECT meter_id FROM ems_meter WHERE energy_type_id = #{energyTypeId}
+            )
+        </if>
+        <if test="startTime != null">
+            AND start_time &gt;= #{startTime}
+        </if>
+        <if test="endTime != null">
+            AND end_time &lt;= #{endTime}
+        </if>
+    </select>
+
 </mapper>