create guid online

I recently read a blog post on what is better using GUIDs or Integer values. This is been a age long debate and there be advocates in both camps stressing on the disadvantages of the other. Well both implementations has their advantages and

As we all know, the IDs in database tables are not repeatable, you can automatically fill out the growth ID by identifying the ID column as identity when you create the table, without requiring personal maintenance. However, due to various reasons,

This post mainly demonstrates "CREATE FILE encountered operating system error 5 (Access is denied.)" The cause of the error (which is, of course, a scenario that causes the error to occur) and how to solve the problem and some puzzling confusion.Lab

Asp.net single file upload solution with progress bar, asp.net progress bar Recently, I encountered many problems in my project, such as uploading files with progress bars. I have read a lot of online documents and have not found ASP in the true

Word Online Editing \ generate image (including and merging), word 1. Business reasons If the text edited by word is copied to the html editor (fck, etc.), the layout may be disordered, so it is chaotic. There needs to be a new method to end, so

Http://www.xuebuyuan.com/1798879.html Recently, due to the project needs, the need to create the installation program for customers, the first use of VS2005 to pack the package, but for some time found that vs packaging is too rigid, and use a lot

First, IntroductionThe previous topic has realized the function of the shopping cart for the online bookstore, in this topic, will continue to improve the online bookstore case, the topic will be on the online bookstore order function implementation

Before the Oracle12.2 version, if you want to convert a non-partitioned table to a partitioned table, there are several ways to do this: 1. Build the partition table and insert the data into the partition table with the INSERT into SELECT, 2, use

1.1.tab_taobao_bill1.1.1 Check whether this table can be redefined online, no error indication can be, error will give the wrong message: exec dbms_redefinition.can_redef_table (' Ycheng ', ' p_ Tab_taobao_bill '); 1.1.2.EXPDP export table for

Before the Oracle12.2 version, a move operation on a table adds a exclusive lock to the table, and the DML operation cannot be performed on the table. Although the move operation has an online clause, it applies only to IoT tables, not to heap