SQL数据库的相关内容

文章 2023-05-08 来自：开发者社区

【SQL数据库使用中的问题解决】——在sql使用过程中，发现数据类型无法更改

【SQL数据库使用中问题解决】——在sql使用过程中，发现数据类型无法更改博主：命运之光专栏：MySQL分享一篇今天在数据库上机时遇到的==小问题==，问题和解决方案都在下方问题描述在sql使用过程中，发现数据类型无法更改解决方法(两步)以下为解决方式：第一步第二步结语解决成功，祝各位好运(●'◡'●)

文章 2023-05-07 来自：开发者社区

关于xxl-job中的慢sql引发的磁盘I/O飙升导致拖垮整个数据库服务

背景：某天突然发现服务探测接口疯狂告警、同时数据库CPU消耗也告警，最后系统都无法访问；查看服务端日志，发现大量的报错如下：CommunicationsException: Communications link failure ：The last packet successfully received from the server was 201,106 milliseconds ago.....

文章 2023-05-07 来自：开发者社区

软件测试|SQL数据库相关操作，这篇文章就够了

前言我们之前介绍了SQL的常用命令，本篇文章我们来介绍SQL数据库的相关操作，包括数据库的新建修改删除操作。创建数据库SQL CREATE DATABASE 语句用来创建一个新的数据库，CREATE DATABASE 语句的基本语法如下：CREATE DATABASE DatabaseName;注：DatabaseName 为数据库名字，它的名字必须是唯一的，不能和其它数据库重名示例如果希望创建....

问答 2023-05-03 来自：开发者社区

尝试了一下同样的数据，迁移到mysql之后运行同样逻辑，一切正常。我把在OB数据库下运行的SQL给c

尝试了一下同样的数据，迁移到mysql之后运行同样逻辑，一切正常。我把在OB数据库下运行的SQL给copy到mysql手动运行了一遍，完全不会报错。但OB就会报错。可能activiti 和flowable这种框架对mysql有什么硬依赖吧。都是同样环境，我这边可以提供复现上下文材料。之前试过4.0版本的OB，运行flowable或者activiti走到建表那一步就不支持，也是主键外键相关的报错....

问答 2023-05-01 来自：开发者社区

DMS中Sql server 数据库，用云下的.bak 文件能还原到云上吗

问答 2023-04-27 来自：开发者社区

数据库日志格式为ROW,但是canal投递到mq中，会出现具体的sql语句statement格式的

mysql 8.0 canal -1.1.5 收集了所需要的row的log，但是同时也收到了很多statement格式的日志，想问问大佬有没有出现过这种问题，mysql的binlog配置是只有Row的产生一条row，就会生产一条statement，但是我的mysql格式就是row的，这里有大佬遇到过吗？原提问者GitHub用户wkztselina

问答 2023-04-27 来自：开发者社区

您好，Dataphin查询下这个SQL在数据库执行多长时间哈，select id,biz_key,b

您好，Dataphin查询下这个SQL在数据库执行多长时间哈，select id,biz_key,biz_serial,exec_status,name,bean_name,facts,param,node,order_number,handled_times,last_handle_msg,created_at,updated_at from bf_process_info where (up....

问答 2023-04-26 来自：开发者社区

DMS数据导入不行，数据导入只能要么sql 要么csv 。这个是数据库整库的文件，既有sql又有c

DMS数据导入不行，数据导入只能要么sql 要么csv 。这个是数据库整库的文件，既有sql又有csv 。或者说在哪里可以启用命令行我用python导入？分开导的话像csv只能单表指定。量太大不可行

文章 2023-04-23 来自：开发者社区

慢SQL是如何拖垮数据库的

1.背景案例上午9:49，应用报警：4103.ERR_ATOM_CONNECTION_POOL_FULL，应用数据库连接池满。。上午9:49-10:08期间，陆续出现 4200.ERR_GROUP_NOT_AVALILABLE、4201.ERR_GROUP_NO_ATOM_AVAILABLE、4202.ERR_SQL_QUERY_TIMEOUT等数据库异常报警 ...

问答 2023-04-19 来自：开发者社区

flink sql 中的数据库的密码，flink有自带的脱敏参数吗

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云数据库SQL Server，具有企业许可授权，权限更为开放，引擎功能更为强大。能完美支持Windows平台的.NET架构，支持复杂SQL查询，性能优秀，并有强大的可视化管理工具，帮助您轻松管理数据。

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