优化sql

app/service/change_audit.js

@@ -218,12 +218,19 @@ module.exports = app => {
          * @return {Promise<void>}
          */
         async getAuditChange(uid) {
+            // const sql = 'SELECT ca.`uid`, ca.`times`, ca.`usite`, ca.`usort`, ca.`tid`, ca.`cid`, ca.`begin_time`, ca.`end_time`, ca.`sin_time`, ca.`name` As `caname`, ' +
+            //     '    c.`code` As `ccode`, c.`name` As `cname`, c.`status` As `cstatus`, c.`cin_time`, ' +
+            //     '    t.`name`, t.`type`, t.`user_id` ' +
+            //     '  FROM ?? AS ca, ?? AS c, ?? As t ' +
+            //     '  WHERE ca.`uid` = ? and ca.`status` = ? and c.`status` != ?' +
+            //     '    and ca.`cid` = c.`cid` and ca.`tid` = t.`id` ORDER BY ca.`sin_time` DESC';
             const sql = 'SELECT ca.`uid`, ca.`times`, ca.`usite`, ca.`usort`, ca.`tid`, ca.`cid`, ca.`begin_time`, ca.`end_time`, ca.`sin_time`, ca.`name` As `caname`, ' +
                 '    c.`code` As `ccode`, c.`name` As `cname`, c.`status` As `cstatus`, c.`cin_time`, ' +
                 '    t.`name`, t.`type`, t.`user_id` ' +
-                '  FROM ?? AS ca, ?? AS c, ?? As t ' +
+                '  FROM ?? AS ca LEFT JOIN ?? AS c ON ca.`cid` = c.`cid` ' +
+                '    LEFT JOIN ?? As t ON ca.`tid` = t.`id` ' +
                 '  WHERE ca.`uid` = ? and ca.`status` = ? and c.`status` != ?' +
-                '    and ca.`cid` = c.`cid` and ca.`tid` = t.`id` ORDER BY ca.`sin_time` DESC';
+                '  ORDER BY ca.`sin_time` DESC';
             const sqlParam = [this.tableName, this.ctx.service.change.tableName, this.ctx.service.tender.tableName, uid, auditConst.status.checking, auditConst.status.uncheck];
             const changes = await this.db.query(sql, sqlParam);
             for (const c of changes) {