General \copyright show PostgreSQL usage and distribution terms \g [FILE] or ; execute query (and send results to file or |pipe) \h [NAME] help on syntax of SQL commands, * for all commands \q quit psql Query Buffer \e [FILE] edit the query buffer (o…
C++ string 用法详解 字符串分割(C++) C++ QUICK REFERENCE Matt Mahoney, mmahoney@cs.fit.edu DECLARATIONS enum weekend {SAT,SUN}; // weekend is a type with values SAT and SUN enum weekend day; // day is a variable of type weekend enum weekend {SAT=0,S…
ASP.NET Web Pages (Razor) API Quick Reference By Tom FitzMacken|February 10, 2014 Print This page contains a list with brief examples of the most commonly used objects, properties, and methods for programming ASP.NET Web Pages with Razor syntax. Desc…
mongo Shell Command History You can retrieve previous commands issued in the mongo shell with the up and down arrow keys. Command history is stored in ~/.dbshell file. See .dbshell for more information. Command Line Options The mongo shell can be sta…
1.关心你的技艺 Care About Your Craft 如果不在乎能否漂亮地开发出软件,你又为何要耗费生命去开发软件呢? 2.思考!你的工作 Think! About Your Work 关掉自动驾驶仪,接管操作.不断的批评和评估你的工作. 3.提供各种选择,不要找蹩脚的借口 Provide Options,Don't Make Lame Excuses 要提供各种选择,而不是找借口.不要说事情做不到:说明能够做什么. 4.不要容忍破窗户 Don't Live with Broken Wi…
Basic basic.ack(delivery-tag delivery-tag, bit multiple)Support: fullAcknowledge one or more messages.Acknowledge一个或多个message When sent by the client, this method acknowledges one or more messages delivered via the Deliver or Get-Ok methods. When sen…
SQL Statement Syntax AND / OR SELECT column_name(s)FROM table_nameWHERE conditionAND|OR condition ALTER TABLE ALTER TABLE table_name ADD column_name datatype or ALTER TABLE table_name DROP COLUMN column_name AS (alias) SELECT column_name AS column_al…