问题修改

src/main/resources/mapper/QueryListMappeer.xml

@@ -183,10 +183,10 @@
             b.storage_location_name as storageLocationName,
             c.code as code,
             c.name as name,
-            c.unit_of_measurement,
+            ifnull(c.unit_of_measurement, ""),
             sum( a.amount ) AS sum,
             a.wbs as wbs,
-            c.max_num,
+            ifnull(c.max_num, 0),
             DATEDIFF(now(),scrq),
             c.part_type,
             c.wllb_class,