results is analyzed as follows: 1. Thread Thread-0 gets to CPU execution and locks, produces roast duck 3298, sets flag to true. Then, Thread-0 again acquires the CPU execution, because flag is true, so the wait method is executed, blocking. Thread-1 then gets the CPU execution, and because flag is true, the wait method is executed and also blocked.
2. Thread Thread-3 gets the CPU execution right and lock, consumes roast duck 3298, sets flag to false. Then, the thread Thread-0 is awakened, bu
. Applicable
Bernstein Bissot not applicable
Bloom . 2
Bull not Applicable [Email protected]> SELECT last_name, salary, NVL2 (commission_pct,
2 salary + (Salary * commission_pct), Salary) Income
3 from employees WHERE last_name like ' B% '
4 ORDER by last_name;
Last_Name SALARY INCOME
---------------------------------------------
Baer
. Applicable
Bernstein Bissot not applicable
Bloom . 2
Bull not Applicable [Email protected]> SELECT last_name, salary, NVL2 (commission_pct,
2 salary + (Salary * commission_pct), Salary) Income
3 from employees WHERE last_name like ' B% '
4 ORDER by last_name;
Last_Name SALARY INCOME
---------------------------------------------
Baer
STM32 's Can---error management Analysis Cow blog http://blog.csdn.net/flydream0/article/details/8161418Implementation of can bus in embedded Linux driver programHttp://www.21ic.com/app/embed/200911/49216.htmSocke can set baud rateFind one of the methods using the IP command, BusyBox produced by the IP does not seem to support the Socketcan settings, you have to download the Iproute2 source code to build their own. Get the IP command and copy it to the bin directory of your system.IP link Set ca
and call
Zing with Argument 33
Require ' lib/vendor/autoload.php ';
This is the class we ' re exposing to DnodeClass Temp{Compute the client ' s temperature and stuff that value into the callbackPublic function temperature ($CB){}}
$loop = new React\eventloop\streamselectloop ();$dnode = new Dnode\dnode ($loop, New Temp ());$dnode->connect (7070, function ($remote, $connection) {Remote is a proxy object so provides us all methodsFrom the server$remote->zing (function ($n) use ($connecti
negligible. So this optimization has failed again.
Summary: When you can use simple flow, do not use complex flow, do not believe in theory, only to try to know.Note: The test data is Nokia3100 mobile phone's real machine test data, on the Nokia 3300 This data is smaller, the fastest about 800 ms
4 compression or no compression
Do J2me know MIDlet suite capacity is too small, so unavoidably want to do a bit of compression. A few days ago, I tried a c
ODBC Specification Conformance error 3300 cannot create a relationship
3301 cannot perform this operation; This version of the feature is not valid in the old format database
33,021 data table rules cannot be changed when they are in use
3303 This field cannot be deleted. It is part of one or more connected
3304 must enter a personal identifier (PID) consisting of four to 20 characters and numbers
3305 Invalid connection string through query
3306 has
that when we're running the site? service in place to tell us: 8:00-20:00, our website whether there is customer service, if not, then I suggest that as long as our website wants to obtain benefits from the user's hands, then must set up a dedicated customer service staff; The second is whether our website is the content that the user needs, users need content is nothing more than the Web site theme-related information, such as you do is an emerald identification site, ask your website if there
Baidu Index tool is a very good keyword analysis tool, it can detect the keyword daily search volume, according to this tool we can easily distinguish which keywords are flow, which keyword is worth our words, but a lot of people respond to Baidu Index tools to provide the search volume is not allowed, For example, keyword website construction this keyword Day search volume is about 1800 to 3300, when we do this keyword Baidu first, even if this keywo
following two conditions
People who take only one course, return the ID of that course
For those who take multiple courses, return to the selected master course ID
The simple idea is to execute two different SQL statements to query.Condition 1--Condition 1: Only one course of students selected std_id, MAX (class_id) as Main_classfrom Studentclassgroup by Std_idhaving COUNT (*) = 1;Execution Results 1std_id main_class------ ---------- 4400 5500 6Condition 2-C
upbringing machine ' docker-1 ' up with ' VirtualBox ' provider...==> docker-1: Importing base box ' CENTOS/7 ' ... [ Kprogress:20%[kprogress:40%[kprogress:90%[k==> docker-1: Matching MAC address for NAT networking...==> docker-1: Checking if box ' CENTOS/7 ' is up to date...==> docker-1: Setting The name of the Vm:docker-1_docker-1_1534247086153_8 3300==> docker-1: Clearing any previously set network interfaces...==> docker-1: Preparing Network int
the alias can be specified in,and a subquery can be specified in, for example, select distinct code from customers2UnpivotTypical column-changing report functionsCREATE TABLE Fruit (ID int,name varchar (), Q1 int, Q2 int, Q3 int,q4 int), here Q1 int, q2int, Q3 int, Q4 int for four quarter.INSERT into Fruit values (1, ' Apple ', 1000,2000,3300,5000), insert into Fruit values (2, ' orange ', 3000,3000,3200,1500); INSERT INTOFruit values (3, ' bananas ', 2500,3500,2200,2500), insert into Fruit va
, MAX (class_id) as Main_classFrom StudentClassGROUP by std_idHaving COUNT (*) = 1;Execution Results 1std_id Main_class------ ----------300 4400 5500 6Condition 2-Condition 2: Students who choose multiple coursesSELECT std_id, class_id as Main_classFrom StudentClassWHERE main_class_flg = ' Y ';Execution Results 2std_id Main_class------ ----------100 1200 3If you use the case function, we can solve the problem with just one SQL statement, as shown belowSELECT std_id,Case when COUNT (*) = 1--The s
courseSELECT std_id, MAX (class_id) as Main_classFrom StudentClassGROUP by std_idHaving COUNT (*) = 1;Execution Results 1std_id Main_class------ ----------300 4400 5500 6Condition 2-Condition 2: Students who choose multiple coursesSELECT std_id, class_id as Main_classFrom StudentClassWHERE main_class_flg = ' Y ';Execution Results 2std_id Main_class------ ----------100 1200 3If you use the case function, we can solve the problem with just one SQL statement, as shown belowSELECT std_id,Case when
. 1.2192.168.1.2For the intranet IP address, there may be more than one intranet IP, so there is no automatic acquisition, users need to manually add.On server side operations:Import templates/zabbix_mysql_multiport.xml using Zabbix UI ( import with Configuration, templates), and createImport the template and add the template to the machine you want to monitor.3. Testing#Perlmymonitor.pl--host10.0.0.10--port3300--Items HVHV:36968# Perlmymonitor.pl--host10.0.0.10--port3300--Items Kxkx:1070879944#
Tags: --Demo to combine multiple record data into one SQL INSERT statement (for MySQL) function getTpl0 (tname)--Get table fields Local T = {Tpl_pack = {"Packid", "ItemId", "' GR OUP ' "," num "," rate "," Ratetype "},} to K, V in pairs (t) does if tname = = K then return t[k] end End End--TPL = {3 813,10,0,2,0,1,1,0,350,5,220,6,0,0,0,0,154,0,0,0,210,80,29} tpl9122 = {--"packid", "ItemId", "' Group '", "num", "rate" , "Ratetype" {9122, 3294, ', 1, 1, 2}, {9122, 3295, ', 1, 1, 2}, {9122, 3296,
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