2022-08-31 优化采购申请列表sql性能

zd-modules/zd-chemical/src/main/resources/mapper/chemical/ActHxpapplyMapper.xml

@@ -91,11 +91,31 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         SELECT xx1.* FROM (
             SELECT xx.id,xx.applyNum,xx.subscriber,xx.subName,xx.chemicalNames,xx.createTime,xx.overTime,xx.approvalContent,xx.approvalStatus,
             CASE WHEN xx.approvalStatus = 0 THEN
-            (SELECT GROUP_CONCAT(ur.user_id,';',ur.nick_name) FROM sys_user ur WHERE FIND_IN_SET(ur.user_id,xx.currentApprover))
+            (SELECT GROUP_CONCAT(ur.user_id,';',ur.nick_name) FROM sys_user ur
+                WHERE ur.`user_id`
+                IN (
+                SELECT
+                SUBSTRING_INDEX(SUBSTRING_INDEX(xx.currentApprover,',', b.help_topic_id + 1), ',', -1) result
+                FROM
+                mysql.help_topic b
+                WHERE
+                b.help_topic_id < (LENGTH(xx.currentApprover) - LENGTH(REPLACE(xx.currentApprover, ',', '')) + 1)
+                )
+            )
             ELSE ''
             END currentApprover,
             CASE WHEN xx.approvalStatus = 3 THEN ''
-            ELSE (SELECT GROUP_CONCAT(ur.user_id,';',ur.nick_name) FROM sys_user ur WHERE FIND_IN_SET(ur.user_id,xx.historyApprover))
+            ELSE (SELECT GROUP_CONCAT(ur.user_id,';',ur.nick_name) FROM sys_user ur
+                WHERE ur.`user_id`
+                IN (
+                SELECT
+                SUBSTRING_INDEX(SUBSTRING_INDEX(xx.historyApprover,',', b.help_topic_id + 1), ',', -1) result
+                FROM
+                mysql.help_topic b
+                WHERE
+                b.help_topic_id < (LENGTH(xx.historyApprover) - LENGTH(REPLACE(xx.historyApprover, ',', '')) + 1)
+                )
+            )
             END historyApprover,
             xx.currentApprover currentApproverIds,xx.userId
             FROM (
@@ -168,11 +188,31 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         SELECT xx1.* FROM (
             SELECT xx.id,xx.applyNum,xx.subscriber,xx.subName,xx.chemicalNames,xx.createTime,xx.overTime,xx.approvalContent,xx.approvalStatus,
             CASE WHEN xx.approvalStatus = 0 THEN
-            (SELECT GROUP_CONCAT(ur.user_id,';',ur.nick_name) FROM sys_user ur WHERE FIND_IN_SET(ur.user_id,xx.currentApprover))
+            (SELECT GROUP_CONCAT(ur.user_id,';',ur.nick_name) FROM sys_user ur
+                WHERE ur.`user_id`
+                IN (
+                SELECT
+                SUBSTRING_INDEX(SUBSTRING_INDEX(xx.currentApprover,',', b.help_topic_id + 1), ',', -1) result
+                FROM
+                mysql.help_topic b
+                WHERE
+                b.help_topic_id < (LENGTH(xx.currentApprover) - LENGTH(REPLACE(xx.currentApprover, ',', '')) + 1)
+                )
+            )
             ELSE ''
             END currentApprover,
             CASE WHEN xx.approvalStatus = 3 THEN ''
-            ELSE (SELECT GROUP_CONCAT(ur.user_id,';',ur.nick_name) FROM sys_user ur WHERE FIND_IN_SET(ur.user_id,xx.historyApprover))
+            ELSE (SELECT GROUP_CONCAT(ur.user_id,';',ur.nick_name) FROM sys_user ur
+                WHERE ur.`user_id`
+                IN (
+                SELECT
+                SUBSTRING_INDEX(SUBSTRING_INDEX(xx.historyApprover,',', b.help_topic_id + 1), ',', -1) result
+                FROM
+                mysql.help_topic b
+                WHERE
+                b.help_topic_id < (LENGTH(xx.historyApprover) - LENGTH(REPLACE(xx.historyApprover, ',', '')) + 1)
+                )
+            )
             END historyApprover,
             xx.currentApprover currentApproverIds,xx.userId
             FROM (