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PostgreSQL 10分区表及性能测试报告小结_PostgreSQL_脚本之家

ERROR: column "createdate" in child table must be marked NOT NULL Time: 0.564 ms 增加子表里,约束需要与主表一致 1 2 3 4 5 6 postgres=# alter table order_range_201701 alter column createdate set not null; ALTER TABLE Time: 17.345 ms postgres=# alter table order_range attach partition ...
www.jb51.net/article/2341...htm 2025-1-22

MySQL5.6基本优化配置_Mysql_脚本之家

# *** DO NOT EDIT THIS FILE. It's a template which will be copied to the # *** default location during install, and will be replaced if you # *** upgrade to a newer version of MySQL. [mysqld] # Remove leading # and set to the amount of RAM for the most important data ...
www.jb51.net/article/509...htm 2025-2-8

VMware实现PXE+kickstart无人值守安装Centos7系统的详细过程_VMware_脚...

---> Package dhcp.x86_64 12:4.2.5-68.el7.centos.1 will be installed …… 3.3.2 配置DHCP服务 配置DHCP文件 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 ...
www.jb51.net/article/2292...htm 2025-2-1

深入浅析Redis 集群伸缩原理_Redis_脚本之家

5786e3237c7fa413ed22465d15be721f95e72cfa 192.168.11.40:9002@19002 master - 0 1620933906733 1 connected 6827-10922 85ceb9826e8aa003169c46fb4ba115c72002d4f9 192.168.11.40:9003@19003 master - 0 1620933905000 3 connected 12288-16383 bb1bb0f5f9e0ee67846ba8ec94a38da700e2e80d 192.168.11.40:9007...
www.jb51.net/article/2123...htm 2025-1-28

FREEBSD6.0 架设FTP 服务器_Unix/BSD_操作系统_脚本之家

230-Questions about this service can be sent to: freebsd@isc.org. 230- 230 Login successful. Remote system type is UNIX. Using binary mode to transfer files. ftp>ls^C ftp>passivePassive mode on ftp>ls227 Entering Passive Mode (204,152,184,73,54,200) ...
www.jb51.net/os/Unix/1487_a...html 2025-2-7

网络常见故障问答_网络编程_脚本之家

The Route table should be added in the Cisco 2511 I think. 在async口interface上加上ip unnumbered E 0 lobla加上ip classless. 15 CISCO 2509的故障现象: 拨号后,出现拨号后终端窗口,无USERNAME,PASSWORD提示。按F7继续,则显示检验用户名口令,登录。上去后,无法与服务器连接。
www.jb51.net/article/120...htm 2025-1-22

Linux实现DHCP服务器的搭建_Linux_脚本之家

max-lease-time 7200; # Use this to enble / disable dynamic dns updates globally. #ddns-update-style none; # If this DHCP server is the official DHCP server for the local # network, the authoritative directive should be uncommented. ...
www.jb51.net/article/2201...htm 2025-1-26

Python强化练习之Tensorflow2 opp算法实现月球登陆器_python_脚本之家

super(ActorCritic, self).build(input_shape) # Be sure to call this at the end def act(self, state, memory): """计算行动""" # 计算4个方向概率 action_probs = self.action_layer(state) # 通过最大概率计算最终行动方向 dist = Categorical(action_probs) action = dist.sample() # 存入memo...
www.jb51.net/article/2248...htm 2025-2-2

jmeter实现接口关联的两种方式(正则表达式提取器和json提取器)_java...

可以将返回的值复制到 www.bejson.com-->json菜单-->json视图-->json数据中,然后点击试图查看,如下图: json提取器的使用步骤 1.在需要获得数据的请求“1.获取access_token” 上右击添加一个后置处理器-->JSON提取器 Name of created varialies:即下一个请求要引用的参数名称,如填写access_token,则可用${ ...
www.jb51.net/article/2306...htm 2025-2-5

详解Java中Duration类的使用方法_java_脚本之家

* @throws DateTimeParseException if the text cannot be parsed to a duration */ public static Duration parse(CharSequence text) { ... } } 比较方法 比较两个时间的差 1 2 3 4 5 6 7 8 9 10 11 Instant start = Instant.parse("2017-10-03T10:15:30.00Z"); Instant end = Instant.parse...
www.jb51.net/article/2490...htm 2025-2-7