data saver

Today, I am working on a website project. This error is found: Data truncation: data too long for column 'dcontent' at Row 1. I checked the following. It is found that the length of the table I inserted into the text box is greater than 65535, that is, the default length of text .. Later, I changed the field type of "DContent" to mediumtext, so that this error will not occur. Therefore, if someone finds thi

I. DataCubeIt is defined by dimensions and facts. A dimension is a perspective or entity that an organization wants to save records. One or a group of attributes in the corresponding dimension mode. This mode should be a fact table (central table ). Each dimension has a table associated with it, which is called a dimension table. It further represents the dimension. Dimension tables can be set by users or experts, or automatically generated and adjusted based on

Tags: des style blog http io ar color OS useBefore you start, say the online, most of the blog about this aspect or something else, on my own feelings, the first is not detailed, the second language can not be very good for beginners to understand.The title of my blog is used three sentences, is to facilitate other people to find good;What is the use of the method described here? Using it, you can refresh the page without flash, and get the data feedb

Iii. General paging display and storage process for small data volumes and massive data Creating a web application requires paging. This problem is very common in database processing. The typical data paging method is the ADO record set paging method, that is, pagination is achieved by using the ADO self-contained paging function (using the cursor. However, this

Transferred from: http://www.aboutyun.com/thread-10886-1-1.htmlAfter HBase 0.94 split strategy: http://www.aboutyun.com/thread-11211-1-1.htmlWhat processes are required for 1.Client writing?How does 2.Hbase read the data?Client write-in Memstore, until Memstore full, flush into a storefile, up to a certain threshold, start compact merge operations Multiple StoreFile merged into one storefile, simultaneous version merging and

1. PrefacePrior to 10g, traditional export and import using exp tools and IMP tools, starting with 10g, not only retained the original exp and IMP tools, but also provided the data Pump Export Import Tool EXPDP and IMPDP. Therefore, in the 11G of the inverted library and warehousing methods, we also have two ways to choose: traditional mode and data pump mode.Traditional mode is also divided into: General I

The page $ _ POST cannot accept post data, but uses get to submit. $ _ GET can be connected to html: Myform Php: Transform If (isset ($ _ GET ['hoby']) { Echo $ _ GET ['hoby']; } ?> This is the code I just wrote, submitted using the get method, and then the php section can be connected to data with $ _ GET, However, once the submission method is changed

Why the JavaScript eval function, when parsing JSON data, is prefixed with parentheses. Why do I have to eval here to add "(" ("+data+")); The reason is that eval itself is a problem. Since JSON starts and ends with "{}", in JS it is treated as a block of statements, so it must be coerced into an expression. The purpose of parentheses is to force the Eval function to force an expression in parenth

IOS network data download and Json data parsing, and iosjson data parsingIntroduction to iOS network data download and Json data parsing In this article, I will introduce how to use NSURLConnection to download data from the networ

Basic data type, set set, comprehensive application new data update old dataCreate a two dictionaryNew data, update the original data, A is the original data, B is the new data1, respectively get to the A dictionary and the B Dictionary key (key), the two dictionary keys are

PHP IE8 can get data when reading the database, Chrome, 360, FF and other browsers can't get the data

Document directory 2. 1. Export data from the table to a file (using trusted connections) 2. export data from the table to a file (using Hybrid Authentication) 2. 3. Import the data in the file to the table 0. References: SQL Server BCP usage Summary BCP Utility How to import data from 6 million users to MySQL, MS

Prevention of data leakage: Five data management methods in 2018 and five data management methods in 2018 Many people have heard of the saying "data is King", but such expression may have a completely new meaning in 2018. With the explosive growth of data at an unprecedented

The multidimensional data model is a fact-and-dimension-based database model established to meet the needs of users to query and analyze data from multiple perspectives and layers, its basic application is to implement OLAP (Online Analytical Processing ). Each dimension corresponds to one or a group of attributes in the mode, and each unit stores a certain clustering metric value, such as count or sum. Cub

CYQ. Data lightweight Data layer V4.3 released [added support for SQLite and MySQL databases] Preface: Following the previous version: CYQ. Data lightweight Data layer V4.0 was released. it has been another month, but it has been a new year. Because of the Chinese New Year's Eve, the framework has not had much to

What is the difference between data Mining (mining), machine learning (learning), and artificial intelligence (AI)? What is the relationship between data science and business Analytics? Originally I thought there was no need to explain the problem, in the End data Mining (mining), machine learning (machines learning), and artificial intelligence (AI) wha