03 2020 档案

摘要:-- oracle select substr(md5(key_id),1,1) as flag ,count(1) as cnt from ( select 1 as key_id union all select 2 as key_id union all select 3 as key_id 阅读全文
posted @ 2020-03-31 22:33 chenzechao 阅读(403) 评论(0) 推荐(0) 编辑
摘要:https://help.aliyun.com/knowledge_detail/41751.html?spm=5176.10695662.1996646101.searchclickresult.52cf1441JfXe4V 在导出数据时报错 ERROR: Could not construct 阅读全文
posted @ 2020-03-30 15:19 chenzechao 阅读(677) 评论(0) 推荐(0) 编辑
摘要:1. 通过查询是否有DDL或DML操作语句,因为锁表正常都是这两种导致的 2. 查询show processlist 3. 找到相应的语句,执行kill 阅读全文
posted @ 2020-03-22 21:28 chenzechao 阅读(532) 评论(0) 推荐(0) 编辑
摘要:https://www.cnblogs.com/kawashibara/p/8961646.html 阅读全文
posted @ 2020-03-21 22:41 chenzechao 阅读(374) 评论(0) 推荐(0) 编辑
摘要:# -*- coding: utf-8 -*- import datetime import sys,time import sys from odps import options import smtplib from email.header import Header from email. 阅读全文
posted @ 2020-03-16 09:20 chenzechao 阅读(868) 评论(0) 推荐(0) 编辑

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