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Remove duplicate data by day. If the value is 0, 0 is used. Otherwise, the maximum value is used. If the value is 0 Test data: mysql> select * from t2; + ---- + -------- + --------------------- + ---------- + | id | userid | inputDate | infoStatus | + ---- + -------- + --------------------- + ---------- + | 1 | 1 | 00:00:00 | 20013 | 2 | 1 | 00:00:00 |

It seems that the foundation is still very important, the foundation is not solid hard to learn C language, do not say to write high quality C language code. Today, I was tortured by this problem, haha, but now finally understand the ' 0 ', "0" between the difference. Confused and happy to share with you. ' The ' and ' 0 ': First, compare the differences. One

Oop = $. Transform$. Rotation = (quat 0 0 0 1) Subobjectlevel = 2$. Modifiers [1]. Center = pos_posSubobjectlevel = 0 $. Modifiers [1]. Gizmo = OOP -- I used the following method to do it. In real time? In (quat 0 0

Use the following procedure to detect$a =0;if (empty ($a)) {echo "yes|";} Else{echo "no|";} if (Isset ($a)) {echo "yes|";} Else{echo "no|";} if (Is_null ($a)) {echo "yes|";} Else{echo "no|";} if ($a) {echo "yes|";} else {echo "no|";}So the result of a $ A difference is as followsSummarize:The case of emptyThe value of the 1 variable is empty $var = "";The value of the 2 variable is a string of 0 or the numb

PHP: empty, isset, is_null, array (0), array (), array (), 0, 0, null, NULL summary through the following program to detect $a=0;if(empty($a)){echo "yes|";}else{echo "no|";}if(isset($a)){echo "yes|";}else{echo "no|";}if(is_null($a)){echo "yes|";}else{echo "no|";}if($a){echo "yes|";}else {echo "no|";} The result of

PHPCMSV9 {loopsubcat (0, 0, 0, $ siteid) $ r} How to explain? {Loopsubcat (, 0, $ siteid) $ r} {loop} *** get subtopic nbsp; * @ param $ parentid parent id nbsp; * @ param $ type topic type nbsp; * @ param $ self: does PHPCMS V9 {loop subcat (, 0, $ siteid) $ r? {Loop su

Town Field Poem:The Pure Heart sentiment wisdom language, does not have the world name and the benefit. Learn water under the hundred rivers, give up arrogant slow meaning.Learn to have a small return to feed root, willing to cast a conscience blog. Sincere in this writing experience, willing to see the text to inspire.——————————————————————————————————————————Code1 DOCTYPE HTML>2 HTML>3 Head>4 Metahttp-equiv= "Content-type"content= "text/html; charset=utf-8"/>5 title>title>6 Scriptt

A string constant is one or more sequence of characters, such as "0" and "search", enclosed by a pair of double quotes; A single character with a single quote, ' Constants ' and ' 0 '; Character constants can be used as integers to participate in related operations in the program, In C, characters are stored in their corresponding ASCII code, one character for one byte. The first ASCII code, the pai

border:1px solid Rgba (0,0,0,0.1) means that the bounding rectangle of the set element is 1 pixels wide, the solid line, and the color is expressed using RGBA.Where Rgba is an attribute in the CSS3,The first 3 digits of the RGBA brackets represent the RGB values of red green blue Three colors, 0-255, and the last one is to set the transparency of this color, which is the alpha value. The range is from 0 to

The site error is as follows:Approx Thread CPU used:kernel 0 ms, user 0 ms. Process utilization 21%. System Idle 76%. interval:73616 Ms.From the error point of view is a worker occupation scheduler not release caused, the server specific number of scheduler can be seen from the Sys.dm_os_sys_info.scheduler_count column, in general, the server is also a number of cores, If the non-yeilding worker is occupied

How does phpcms_v9 display or exclude certain topics subcat (0, 0, 0, $ siteid) and phpcms_v9subcat on the home page?V9 how to display or exclude certain topics in the home page subcat (, 0, $ siteid) You can use the column id in the red section below to control which columns are displayed. The id is queried in the bac