错误提示: psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"? 出现该问题的很多,以下是目前碰到的几种情况,之后碰到继续补充: 1.删除了/tmp路径中的.s.PGSQL.5432 与.
MS SQL SERVER 获取当前数据库文件等信息,适用于多个版本: SELECT dbf.file_id AS FileID , dbf.name AS [FileName] , s.filename AS FileLocation , CAST(dbf.size/128.0 AS DECIMAL(19,2)) AS FileSizeMB , CAST(CAST(FILEPROPERTY(dbf.name, 'SpaceUsed') AS int)/128.0 AS DECIMAL(
由于环境变量 PGHOST配置不当引起的 postgres@pgdb-> psql psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.1921"? 若环境变量PGHOST未配置,且psql不加-h命令的时候,则默认使用的是数据
SQL Server获取指定行(如第二行)的数据 --SQL Server获取指定行(如第二行)的数据-- --法一(对象法)-- select * from ( select * , number = row_number() over(order by Grade desc) from Students ) m where number = 2 --法二(排除法)--- select top 1 * from Students where Grade not in ( select
问题描述: PhoneGap+Sencha Touch开发的应用,打包后的APP或者调试期间,在启动的时候提示如下信息: Application Error - The connection to the server was unsuccessful. (file:///android_asset/www/index.html) 问题分析: 这个应该是PhoneGap某些版本的BUG,尤其在index.html加载的内容较多时容易出现. 解决方法: 方法1:更新到PhoneGap的最
本文主要向大家介绍了SQLServer数据库之SQL Server 获取本周,本月,本年等时间内记录,通过具体的内容向大家展现,希望对大家学习SQLServer数据库有所帮助. datediff(week,zy_time,getdate())=0 //查询本周datediff(month,zy_time,getdate())=0 //查询本月本季:select * from table where datediff(qq,C_CALLTIME,getdate())=0前半年1-6,后半年7-12
1.链接sql server数据库报错 错误连接数据库 [My_vm_win_sql] : org.pentaho.di.core.exception.KettleDatabaseException:Error occurred while trying to connect to the database Driver class 'net.sourceforge.jtds.jdbc.Driver' could not be found, make sure the 'MS SQL Serve
错误提示: psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"? 出现该问题的很多,以下是目前碰到的几种情况,之后碰到继续补充: 1.删除了/tmp路径中的.s.PGSQL.5432 与.s.
postgresql报错: psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"? 1.可能是服务没启动,以下3中启动方式: (1) postmaster -D /usr/local/pgsq
Background Story: One of my friends recently called up and asked me if I had spare time to look at his database and give him a performance tuning advice. Because I had some free time to help him out, I said yes. I asked him to send me the details of
