hearthstone sets

say that x belongs to set a, because there may be n=2,a=8,b=20,4,16, such data, only if the b-x does not exist, only the X and a subscript together. 3, if the b-x also exist, the X and B-x also the subscript also up, at this time if X. =a-x. =b-x, it is also unreasonable to note that A and B sets are common x, that is, the scheme A and B are combined. At this point if x==a-x. =b-x, obviously should be grouped into B, of course, the exception is a and

the value of the property. That is, we've been discussing it for so long that it's impossible to create a progress bar style ProgressBar in pure code form. But... is not to change the value of a class's private variable, Java encapsulation is not as good as I think, we can completely modify the value of an object's private variable by reflection mechanism, because the article is not a reflection of the article, so here only the reflection to modify the value of the private variable code, It

Test instructions: divides n different numbers into 2 sets. Analysis: Divided into two trees. If two trees are connected together, this indicates that there is a point shared or not satisfied with a, b relationship, then output no; Examples: Input 4 5 92 3 4 5Output YES0 0 1 1Input 3 3 41 2 4Output NO #include

Label:1. View database Character Set informationSql> select * from Nls_database_parameters;Where Nls_characterset is the character set of the current database.2. Client Character SetThe parameters for the client character set are Nls_lang.In Windows, query and modify Nls_lang can be set in the registry key hkey_local_machine\software\oracle\homexx\, XX refers to the system number when there are multiple oracle_home.In Unix, you set the client character set by setting the Nls_lang environment var

Tags: Log dict RAC Client connection NEC RES Efault logs db =MySQLdb.connect (myhost,myuser,mypass,mydb) Db.set_character_set ('UTF8')#setting when connecting " "Set the default character set for the current connection character_set_client Character_set_results" "cursor= Db.cursor (Cursorclass =MySQLdb.cursors.DictCursor) Cursor.execute ('SET NAMES UTF8;')#using cursor Settings The result is that current connection character_set_client character_set_results are all UTF8 Python MySQL

administrator. The use command is then used to switch to the target database, and the Db.createuser () command is used to create the user with the role name "ReadWrite".There are two types of common database user roles, read and ReadWrite. As the name implies, the former can only read data cannot be modified, the latter may read and modify.Here is an example:> Use testSwitched to DB test> Db.createuser ({User: "TestUser", pwd: "Testpass", roles:["ReadWrite"]})Successfully added User: {"user": "

Label: The original idea: like a pair of parentheses, suppose to meet the select on the stack, if you meet from the stack, until the stack is empty, get the position at this time. For string interception. Implementation method: Meet the character S and after 5 characters elect + 1, meet the character F and 3 characters in a row for ROM-1, when the counter result is 0 o'clock, return the position of the current character, and then the string interception can be: /**** * Get intercept location * @

method for XML andDISTINCTget the string that has been weighed and then assign a variableFor XML requires SQL Server 2005+ version support--new SQL method to de-redo with for XML path and distinctDECLARE @SNvarchar( -)--The result cannot be assigned to a variable in a query that contains the DISTINCT keyword, and the following SQL will appear with a syntax error near the "keyword ' DISTINCT '." Severity "--SELECT @s= DISTINCT--('/' + (case contacttype – When ' contacttype_1 ' Then ' Consulting

Tags: ring field name comment Value div buffer Max class before1) Create a sequence: 1 2 3 4 5 6 7 createsequenceSEQ_TEST--字段名 minvalue1--最小值 maxvalueXXXXX--设置最大值 startwith 1--从1开始计数 incrementby1--每次加1个 nocycle--一直累加，不循环 nocache;--不建缓冲区 2) sequence configuration in MyBatis: Insert before MyBatis The new method you want to invoke 　 1 2 3 "java.lang.Long"order="BEFORE" keyProperty="id"> SELECTSEQ_TEST.NextvalasidfromDUAL Note:

--apply-log--redo-only $base _dir/0--incremental-dir= $base _dir/$i check Preparation stage $i;d one## #最后一个增量备份echo -e------ Prep Stage $ ($dir _num- 1) ------\n "sleep1/usr/bin/innobackupex--apply-log $base _dir/0-- Incremental-dir= $base _dir/$ (($dir _num-1)) check "Preparation stage $ (($dir _num-1)"; # # # The above steps apply the changes recorded in all incremental backups to the original full-scale backup echo-e "------ apply all changes to $base_dir/0------\ n"/usr/bin/ innobackupex

starting at 100, increase each time by 10, you can: ALTER TABLE TT alter COLUMN ID COUNTER (+)Note: The 1.2 method can be executed when the database is just built, the database is emptied, or when there is data, after the default execution of the DDL statement, such as the ID is set to the primary key will be canceled, if there is a value in the database can be duplicate ID, you want to execute after the primary key setting can be changed to Alter COLUMN [AutoNumber field COUNTER (initial value

= 9 New OracleParameter ("Cur_set", oracletype.cursor); the Cur_set//setting parameter is the output type one by one . Direction = ParameterDirection.Output; + //Add parameter to cmd. Parameters.Add (cur_set); Connect//Open connection to Conn. Open (); to execute and return OracleDataReader, note the release of the return cmd after use. ExecuteReader (commandbehavior.closeconnection

Tags: operation RAC guard mil Delete read/write Microsoft Security oraOracle 11g starts with the ability to set a table as read-only, which prevents modifications to certain tables and provides a certain degree of security.Settings are as follows:-- Set table as read-only permission (locking) ALTER TABLE READ only ; -- set Read and Write permissions for a table (unlock) ALTER TABLE READ WRITE;When the table needs to be updated, adding and deleting records, you can reset the read and write perm

use Find.-mtime +180-name "*.sql.gz" |grep-v "1063001.sql.gz"-exec rm-rf {} \; The direct RM was deleted after the retrieval, but since find uses G Rep error does not recognize {}, so the compromise adopted a scheme to save the retrieved file in a temporary file old_backupfile_$d2.csv inside, and then traverse the Old_backupfile_$d2.csv file to MV or RM operation, etc. The find grep exec error is as follows: [[email protected] ~]# find. -mtime +180-name "*.sql.gz" |grep-v "10630

Enter the installation directory/usr/local/mongodb/bin, ./mongod #启动服务端 Remote Client link 1). Because MongoDB uses the default short time of 27017, but the Linux firewall is blocked by 27017 port access, so you need to open the Linux firewall 27017 port Vi/etc/sysconfig/iptables #查看防火墙配置表 The changes are as follows: #特别提示: Many netizens add these two rules to the last line of the firewall configuration, causing the firewall to fail to start, the correct on

/bigdata-sh-b3.conf ./mongod-f. /conf/bigdata-sh-c3.conf ./mongod-f. /conf/bigdata-sh-configserver3.conf To create a replica set: ./mongo Hadoop1:28111/admin Use admin Rs.initiate () Rs.add ("hadoop2:28111") Rs.add ("hadoop3:28111") ./mongo Hadoop2:28112/admin Rs.initiate () Rs.add ("hadoop1:28112") Rs.add ("hadoop3:28112") ./mongo Hadoop3:28113/admin Rs.initiate () Rs.add ("hadoop2:28113") Rs.add ("hadoop1:28113") ./mongo Hadoop1:28200/admin Rs.initiate () Rs.add ("hadoop2:28200") Rs.add (

set Use the Rs.reconfig () method to reconfigure the replica set for updating the configuration document. Use the CFG variable in the Rs.reconfig () method. If you prevent an app from reading through secondary, you only need to hide the member in the replica set schema. Hide replica set members (1), a hidden member still maintains a primary data collection, but the client application is not visible to it, a hidden member must always have a total priority of 0, cannot become

SQL Server servers run for a while to find that memory is growing exponentially to 98%. Workaround: Restart the host computer to restart the SQL Server service setting maximum memory the first two methods are less suitable for the online environment and the indicator does not recommend setting the maximum memory if there are SQL Server servers constantly eating memory In addition to adding physical memory, it is recommended to run a command to see how much memory the current database consumes, s

119.29.29.29Dns-nameserver 119.29.29.29 This sentence must be there,DNS server addresses are automatically assigned because they were previously resolved by DHCP.And once the static IP is set to not automatically get to the DNS server, you need to set up aAfter you restart your computer, the/etc/resolv.conf file will automatically add nameserver 119.29.29.292. Restart the network: sudo/etc/init.d/networking restartNote the NIC name in Ubuntu16.04 is not eth0.Restart your computer and you'll be

Public Static voidMain (string[] args) {7 8 Try { 9Class.forName ("Oracle.jdbc.driver.OracleDriver"); TenString url = "JDBC:ORACLE:THIN:@127.0.0.1:1521:ORCL"; OneConnection conn = drivermanager.getconnection (URL, "Scott", "Root"); A -Statement stmt =Conn.createstatement ( -Resultset.type_scroll_insensitive,//result set scrolling is not sensitive theRESULTSET.CONCUR_READ_ONLY);//read-only when the result set is accessed concurrently. - -Res