[订单][修复]:有价无价券过滤的问题

mallinkService/src/main/resources/mapper/WxOrderMapper.xml

@@ -546,10 +546,10 @@
             <if test="merchantName!=null and merchantName!=''">
               and o.`merchant_name` like concat('%',#{merchantName},'%')
             </if>
-            <if test="payment!=null and payment=0">
+            <if test="payment!=null and (payment== '' or payment == 0)">
                 and o.`payment` = 0
             </if>
-            <if test="payment!=null and payment>0">
+            <if test="payment!=null and payment > 0">
                 and o.`payment` &gt; 0
             </if>