websense categories

One: Retrieve all the Categories The code is as follows Copy Code $category _collection = Mage::getmodel (' catalog/category ')->getcollection ()->setstoreid (1)->addattributetoselect (' name ')->addattributetoselect (' Url_path ')->addattributetoselect (' is_active ');foreach ($category _collection as $key => $category) {if ($category->getid () = = ' 5 ' | | $category->getid () = = ' 8 ' | | | $category->getid () = = ' 9

1, will the following table in each of the results are more than 80 points of the name? Tom Chinese 81 Tom Mathematical 75 John doe Chinese 76 John doe Mathematical 90 Harry Chinese 81 Harry Mathematical 100 Harry English 90 SELECT * from TB_STU2;Select distinct stu2_name from TB_STU2 where Stu2_name not in(sele

released.Update lock (U lock): U lock can be seen as a combination of S-lock and X-lock, used to update the data, update the data first need to find the updated data, at this time can be understood as the data found on the S lock. When the data that needs to be modified is found, the X lock on the resource being modified is required. SQL Server avoids deadlock problems with u locks. Because S-Lock and S-Lock are compatible, the U-Lock and S-lock are compatible to make the update lookup not affe

Date_format (now (), '%w,%d%M%Y%r ');SELECT Date_format (now (), '%y-%m-%d ');SELECT date_format (19990330, '%y-%m-%d ');SELECT Date_format (now (), '%h:%i%p ');SELECT Inet_aton (' 10.122.89.47 ');SELECT Inet_ntoa (175790383);Viii. type conversion functionFor data type conversions, MySQL provides the cast () function, which converts a value to the specified data type. TypeYes:binary,char,date,time,datetime,signed,unsignedExample:SELECT CAST (now () as signed INTEGER), Curdate () +0;SELECT ' F '

Objective-C categories (category)1. When you want to add methods to a class, you usually expand (extend, that is, inherit) it. However, this is not necessarily a perfect solution, especially if you want to rewrite a class A feature, but you do not have the original code. Categories allows you to add new features to an existing class, but you do not need to expand it. The ruby language has similar functions.

Close to Team Today we will share with you the OC category technology. 1. When you want to add a method to a class, you generally inherit it. However, this is not necessarily a perfect method, especially if you want to rewrite a function of a class, but you do not have the original code. Categories allows you to add new features to an existing class without inheriting it. Example 1: 1, myobjectcatename. h: # Import # Import "myobject. H" // This hea

... Nsdate is already categories, which is defined as follows: @ Interface nsdate (kaladditions) The problem occurs here. Why didn't the class that has already categories be called and the original class was called? Compared with the example project, all files included and linked files are the same, and the same results are not obtained. After searching for the

Category:In iOS project development, it is possible to use categories to add new methods to existing classes, and you do not need to create subclasses. By category we can dynamically add new methods to existing classes, and you can modularize the definition of a class into multiple related files.The benefits of using categories are:First, the modular designIi. use of ca