解决付款单选择单据的时候遇到0待付款的bug

jshERP-boot/src/main/resources/mapper_xml/DepotHeadMapperEx.xml

@@ -581,7 +581,7 @@
             </foreach>
             )
         </if>
-        and (abs(dh.change_amount)+(select ifnull(sum(ai.each_amount),0) from jsh_account_item ai where ai.bill_id=dh.id and ifnull(ai.delete_flag,'0') !='1'))
+        and (abs(dh.change_amount)+(select ifnull(sum(abs(ai.each_amount)),0) from jsh_account_item ai where ai.bill_id=dh.id and ifnull(ai.delete_flag,'0') !='1'))
         &lt; (dh.discount_last_money + dh.other_money)
         and ifnull(dh.delete_flag,'0') !='1'
         order by dh.id desc