reduce csv file size

Websites often need to export data. Common formats include CSV, XLS, and XML waiting formats.CSV is a common data format that is connected by multiple commas. It has some advantages over XLS data. Two ways to export data:1. When the user triggers

Powershell for some simple Excel operations A slightly advanced language involves operations on COM objects. As a script language developed by Microsoft, powershell has this function. First of all, itUse a powerful class library provided by. NET

We in the daily computer operation, contact and processing the most, in addition to the Internet, is probably a variety of documents, starting from this section, we will discuss the file processing, this section mainly introduces some basic concepts

1.1 Installation1.Hive relies on the Hadoop environment, all installed before installing hadoop,hive generally installed on the Namenode node of Hadoop;2. Download hive latest release version (0.7.1) http://www.apache.org/dyn/closer.cgi/hive/3.

Core Knowledge points1.InnoDB: Data and indexes are stored in separate files, clustered indexes, row-level locks, transactions, MVCC2.MyISAM:(1) Cons: Transaction and table-level locks are not supported because table locks are not supported and lock

Mysql configuration file my. cnf configuration and configuration parameters, mysqlmy. cnf Mysql configuration file my. cnf Mysql is installed without the my. cnf file. 1. You can copy the mysql sample configuration file, such as the my-medium.cnf

Original article: Python scripts as a replacement for Bash utility scripts From: http://www.oschina.net/translate/python-scripts-replacement-bash-utility-scripts Translator: enixyu,Showme,Onion noodles For Linux users, the reputation of command line

This article describes how to use Python scripts to implement some BashShell tutorials in Linux, including some simple input/output and email functions. For more information, see, command line reputation is quite high. Unlike other operating systems,

Download Sample Code You can write a hosting application for your own experience-you may feel it is slow. Your application is functional normally, but its performance has many shortcomings. If you want to diagnose performance problems and solve

★How to weigh?When you weigh whether SQLite should be used in an application, consider at least the following points (at the technical level:◇ Can we leverage some of SQLite's strengths?◇ Is there any other alternative?◇ Is there any potential