sc2 lotv

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SC2 and others

The day before yesterday, Star 2 showed his true face in South Korea. I was excited. Why do I go to an internet cafe at noon every day in junior high school? StarCraft and quake3. Haha, the next plan seems to be postponed. It will take one of the reference items that run SC2. however, blizzard seems to like to skip the ticket for a long time... There have been a lot of things over the past few days. Please hurry up and try again. Update:The teacher

How to install Glusterfs on CentOS 6.4

Environment Introduction:Os:centos 6.4 x86_64 MinimalServers:sc2-log1,sc2-log2,sc2-log3,sc2-log4Client:sc2-ads15 Specific steps:1. Install the Glusterfs package on Sc2-log{1-4}: The code is as follows Copy Code # wget-p/ETC/YUM.REPOS.D Http://download.gluster.org/pub/gluster/glusterfs/LATE

Installing the configuration on CentOS 6.4 glusterfs

Background Introduction:The project is currently in the file synchronization with Rsync, in the attempt to replace the distributed file system, the use of moosefs, the effect is not satisfactory, after understanding the Glusterfs, decided to try, because it compared with moosefs, feel more simple deployment, At the same time there is no meta-data server features so that it does not have a single point of failure, it feels very good.Environment Introduction:Os:centos 6.4 x86_64 MinimalServers:sc2

SQL Server Exercises 2

=S.SNO)2. List the names of students with two or more (including two) failing courses and their average grades--Implementation code:SELECT S.sno,s.sname,avg_scgrade=avg (SC. Scgrade)From S,SC, (SELECT SNOFrom SCWHERE scgradeGROUP by SNOHaving COUNT (DISTINCT CNO) >=2A WHERE S.sno=a.sno and SC. Sno=a.snoGROUP by S.sno,s.sname3. List the names of all students who have studied the "1" course and have studied "2"--Implementation code:SELECT S.sno,s.snameFrom S, (SELECT SC. SNOFrom Sc,cWHERE SC. Cno=

SQL Classic four-table query

, ' Levin ', ' 1990-08-06 ', ' Male '),(5, ' Zhou Mei ', ' 1991-12-01 ', ' Women '),(6, ' Wu Lan ', ' 1992-03-01 ', ' Women '),(7, ' Qingshou ', ' 1989-07-01 ', ' Women '),(8, ' Wang Ju ', ' 1990-01-20 ', ' female ');# Teacher TableInsert INTO teacher values(1, ' Zhang San '),(2, ' John Doe '),(3, ' Harry ');# timetableINSERT INTO course values(1, ' language ', 2),(2, ' language ', 1),(3, ' language ', 3);# score TableINSERT INTO SC values(1,1,90),(1,2,80),(1,3,90),(2,1,70),(2,2,60),(2,3,80),(3,

mysql< Six >

from Studentinfo as Swhere S.studentid not in ( --Students taking teacher's course SELECT Sc.studentid from Scoreinfo as SC INNER JOIN Courseinfo as C on sc.courseid = C.courseid INNER JOIN Teacherinfo as T on c.teacherid = T.teacherid and T.teachername = ' Miss Zhang ');--15, the inquiry has studied the Chinese also learned the student information of mathematics select S. ' Stud Entid ' as student number, S. ' Studentname ' as student's name, S. ' Studentgender ' as student gender, S. ' Stu

MySQL Classic face question

SnoHaving COUNT ((CNO) >=2)) awhere S.sno=a.sno and Ssc.sno=a.snoGROUP by S.sno,s.sname; /* The name of the student who has studied course No. 1th and has studied course 2nd * *Select S.sno,s.sname from student swhere S.sno in(Select Sc2.sno from SC sc2,class C2 Where sc2.cno=c2.cno and C2.cno in (' 1 ', ' 2 ')GROUP by Sc2

Build GlusterFS in CentOS 7

GlusterFS File System [Root @ master3 ~] # Wget-P/etc/yum. repos. d [Root @ master3 ~] # Yum install-y glusterfs-fuse [Root @ master3 ~] # Mkdir-p/mnt/models [Root @ master3 ~] # Mount-t glusterfs-o ro glusterfs1: models/mnt/models/ 2. view results [Root @ master3 ~] # Df-h Filesystem Size Used Avail Use % Mounted on /Dev/vda3 289G 5.6G 284G 2%/ Devtmpfs 3.9G 0 3.9G 0%/dev Tmpfs 3.9G 80 K 3.9G 1%/dev/shm Tmpfs 3.9G 169 M 3.7G 5%/run Tmpfs 3.9G 0 3.9G 0%/sys/fs/cgroup /Dev/vda1 1014 M 128 M 887

CentOS7 Combat Kubernetes Deployment

-3.7.17-1.el7.x86_64.rpm glusterfs-fuse-3.7.17-1.el7.x86_64.rpm-->mkdir-p/mnt/models-->mount-t glusterfs-o ro glusterfs1:models/mnt/models/2. View Effects-->df-hDf-htFilesystem Type Size used Avail use% mounted on/dev/sda2 ext4 50G 1.5G 46G 4%/Devtmpfs Devtmpfs 904M 0 904M 0%/devTmpfs tmpfs 913M 0 913M 0%/dev/shmTmpfs tmpfs 913M 8.8M 904M 1%/runTmpfs tmpfs 913M 0 913M 0%/sys/fs/cgroup/dev/sda6 ext4 35G 4.7G 29G 15%/var/dev/sda3 ext4 9.8G 37M 9.2G 1%/Home/DEV/SDA1 ext4 477M 94M 354M 21%/bootTmpfs

Interview SQL statement

;Select * From t_ SC;SelectSc1.s _ id from t_ SC SC1, t_ SC SC2 where sc1.s _ id = sc2.s _ id and sc1.c _ id ='001' and sc2.c _ id = '002' and sc1.score> sc2.score;-- 2. query the student ID and average score of students whose average score is greater than 60;Select s_id, AVG (score) average score from t_ SC group by s

Database interview question Summary

count (distinct cno)> = 2 ) SC Where S. SNO = SC. SNO 4. List the student IDs of all students whose scores are higher than those of students whose scores are equal to those of the course No. -- Implementation code:Select SC. sno from SC,(Select sc1.sno from(Select SC. sno, SC. scgrade from SC, c where SC. cno = c. cno and c. cname = '1') sc1,(Select SC. sno, SC. scgrade from SC, c where SC. cno = c. cno and c. cname = '1') sc2,Where sc1.sno =

In SQL, the use of left join (left Outer Join) and inner join is the opposite of right join (right Outer Join.

count (sc2.id) num3, info. fouth_area as areacode from jd_safe_check SC2 inner join jd_company C on C. ID = sc2.par _ Id2Inner join fk_user_info info on info. ID = sc2.user _ idWhere sc2.is _ deleted = 0And sc2.father _ id is not

Static Constructor (it performs well in singleton)

Today, I accidentally sawCodeMaybe I have never seen it. I think it's new. I just wrote the following code. Maybe I 've seen it, Maybe I forgot ...... Haha, let's make a souvenir on your own ...... I found that the singleton mode is good ...... Using System; Namespace Ca_staticconstructor { Class Staticclass { Public Static Staticclass instance { Get ; Set ;} Public String Name { Get ;Set ;} Static Staticclass (){ If(Instance =Null) { Instance = New Staticclass (); } }} Clas

Common Database interview test questions (SQL Server)

SNAME FROM S Where not exists ( Select * from SC, C Where SC. CNO = C. CNO And cname = 'lilim' And SC. SNO = S. SNO) 2. List the names and average scores of students whose two or more courses fail. -- Implementation code: Select S. SNO, S. SNAME, AVG_SCGRADE = AVG (SC. SCGRADE) From s, SC ,( Select SNO FROM SC Where SCGRADE GROUP BY SNO Having count (distinct cno)> = 2 ) A Where S. SNO = A. sno and SC. SNO = A. SNO Group by s. SNO, S. SNAME 3. List the names of all students who have learned co

Some common questions in SQL Server

from S Where not exists ( Select * from SC, c Where SC. CNO = C. CNO And cname = 'lilim' And SC. Sno = S. SnO) 2. List the names and average scores of students whose two or more courses fail. -- Implementation code: Select S. Sno, S. sname, avg_scgrade = AVG (SC. scgrade) From S, SC ,( Select SnO From SC Where scgrade Group by SnO Having count (distinct CNO)> = 2 ) A where S. Sno = A. SnO and SC. Sno = A. SnO Group by S. Sno, S. sname 3. List the names of all students who have learned course 1

C # "Object Equality comparison"

System.Object instance is the same instance. Parameters://OBJB: The second System.Object to compare. Obja: The first System.Object to compare. Returns the result://True if Obja is the same instance as OBJB, or False if both are null references. public static bool ReferenceEquals (object Obja, Object OBJB); }}Three methods for equality of comparisons are defined in System.Object. There is also an operator (= =) that can compare references or compare values.Here is a detai

SQL Database Pen Questions

. List "1" class scores than the "2" students who have high grades of the student's school number Select S.sno,s.snameFrom S, (Select SC1. SNOFrom SC sc1,c c1,sc sc2,c C2Where SC1. Cno=c1. CNO and c1.name= ' 1 'and SC2. Cno=c2. CNO and C2.name= ' 2 'and SC1. SCGRADE>SC2. Scgrade) SC Where S.SNO=SC. SNO5. List the scores of all students with "1" class scores hig

Basic SQL Exercises--A classic example of elective course

--Implementation code:Select SNAME from Swhere not EXISTS (SELECT * from Sc,c Where SC. Cno=c.cno and Cname= ' Li Ming ' and SC. SNO=S.SNO)  2. List of the names of students with two or more (including two) failed courses and their average scores--Implementation code:Select S.sno,s.sname,avg_scgrade=avg (SC. Scgrade) from S,SC, (Select SNO from SC Where scgrade  3. List the names of all students who have studied the course "1" and have studied "2"--Implementation code:Select S.sno,s.sname fr

Java design Pattern GOF23 04 prototype mode

; } @OverrideprotectedObject Clone ()throwsclonenotsupportedexception {Object obj=Super. Clone (); returnobj; }} PackageCom.lz.prototype;Importjava.util.Date; Public classShallowtest { Public Static voidMain (string[] args) {Shallowclone SC1=NewShallowclone ("Laro", 20,NewDate ()); System.out.println (SC1); System.out.println (Sc1.getname ()); System.out.println (Sc1.getage ()); System.out.println (Sc1.getdate ()); Shallowclone SC

Custom dialog box

Custom dialog box CreatDialog (DIALOG_0 ); @ SuppressLint (ResourceAsColor)Public void CreatDialog (int id ){ AlertDialog. Builder builder = new AlertDialog. Builder (MainMenu. this ); Switch (id ){ Case DIALOG_0: LinearLayout SC = new LinearLayout (this ); // SC. setBackgroundColor (R. color. white ); SC. setBackgroundResource (R. color. black ); SC. setOrientation (LinearLayout. VERTICAL ); // TextView txbg = new TextView (this ); // Txbg. setBackgroundDrawable (getResources (). getDrawable (R

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