influxdb query

First of all to explain the needs: according to our system requirements, we will be the department name, employee name, PC name, IP address and other fields to make the combined query to obtain the desired data results. So, for the sake of simplicity, we use a combination of two criteria (department name, employee name) to explain this technical skill. When we enter only the department name and the employee name is NULL, all employee information in th

I have a simple query. I want to jump out of a window after clicking query. the query result is displayed in the window, such as the title. I don't know how to display it? This is js. can someone tell me? lt; formaction = quot; method = quot; post quot; gt; I have a simple query. I want to jump out of a window aft

This paper illustrates the thinkphp interval query, statistical query and SQL direct query. Share to everyone for your reference. The specific methods are as follows: First, the interval query: Copy Code code as follows: $data [' ID ']=array (Array (' GT ', 4), array (' LT ', 10);/The default relationshi

1. In Windows, query the port occupation and clearing the port occupation programs 1. query the process ID occupied by the port Click "start" --> "run", enter "cmd", and click "OK" to enter the DOS window. Then run the following commands respectively: Netstat-a-n port usageNetstat-ano port occupation and process PIDNetstat-Aon | findstr "80"C: \ Users \ ADMIN> netstat-Aon | findstr "80"TCP 127.0.0.1: 9080 0

Interval query $ data [ amp; #39; id amp; #39;] array ( amp; #39; gt amp; #39;, 4 ), array ( amp; #39; lt amp; #39;, 10); // The default relationship is (and) and the link // SELECT * FROM 'TP _ user' W... Interval query $ Data ['id'] = array ('GT ', 4), array ('Lt', 10); // The default relationship is (and) and // SELECT * FROM 'TP _ user' WHERE ('id'> 4) AND ('id' $ Data ['id'] = array ('G

Tags: nbsp color cal pos Col cores core round. ClassLeftist query SELECT * from a LEFT join B on a.id=b.id; Right Union query SELECT * from a RIGHT join B on a.id=b.id; inline query Select A.name,b.class from A, b where c.id=b.id; ORDER BY Select *from a order by Desc#desc; descending arrangement, ASC ascending order GROUP BY Select COUNT (scores) from the group

Label:Transferred from: http://www.cnblogs.com/likwo/archive/2010/04/16/1713282.htmlQuery Day: SELECT * FROM table where to_days (column_time) = To_days (now ());SELECT * FROM table where date (column_time) = Curdate (); Query one week: SELECT * FROM table where Date_sub (Curdate (), INTERVAL 7 day) Query one months: SELECT * FROM table where Date_sub (Curdate (), INTERVAL 1 MONTH) MySQL

The main query is to determine the main table of the query, and the secondary table.In this case we can confirm that it is a subquery.The main table is our student table: Tblstudent can find the student's school number, nameThe auxiliary table is the score table, TblscoreWrite your own statement as follows:SELECTTblstudent. Stuid,tblstudent. Stuname,xuankeshu.kscount,kccj.countscore fromTblstudent, (SELECT

Advanced query and paging query of OracleSQL, and advanced query of oraclesql 1. subquery A subquery is a SELECT statement, but it is nested in other SQL statements to provide data for this SQL statement to support its operations. Check who has higher salary than CLARK? Select ename, sal from emp where sal> (select sal from emp where ename = 'clark ') View emplo

This article mainly introduces thinkphp range query, statistical query, and SQL direct query. it analyzes the common query techniques of ThinkPHP in details in the form of examples, which is very useful, for more information about the thinkphp interval query, statistical

MySQL slow query: enabling slow query and mysql Query 1. What is the use of slow queries? It records all SQL statements that have been executed longer than long_query_time, and helps you find slow SQL statements to optimize these SQL statements. Ii. parameter description slow_query_logEnabled status of slow Query slow_

Implementation of Atitit. List page and condition query best practices (1) ------ set query conditions and submit query and return json data, atititjson Implementation of Atitit. List page and condition query best practices (1) ------ set query conditions and submit

F Query (take the value of the field)About the query we know that there is filter (), values (), get (), exclude (), and if it is an aggregation grouping, it will also use aggregate and annotate, and even a universal double underline, but if there is such a requirement, The value of the AA field in query a table is greater than the value of the BB field in table

position, D.dname department name, Dtemp.Countnumber of departments, S.grade wage level fromEMP e,emp m,dept D, (SELECTDeptno DNO,COUNT(empno)Count fromEMPGROUP bydeptno) Dtemp,salgrade sWHEREE.sal>(SELECT AVG(SAL) fromEMP) andE.mgr=M.empno (+) andE.deptno=D.deptno andDtemp.dno (+)=D.deptno andE.salbetweenS.losal andS.hisal--61m-----Number of people using this wage levelSELECTS1.grade SG,COUNT(E1.empno)Count fromEMP e1,salgrade S1WHEREE1.salbetweenS1.losal andS1.hisalGROUP byS1.grade--Seventh

Details of ThinkPHP5 Union (association) query, multi-condition query and aggregation query instances, and thinkphp5 instances This example describes ThinkPHP5 Union (association) queries, multi-condition queries, and aggregate queries. We will share this with you for your reference. The details are as follows: 1. Join (join)

(' Big money ', 29, ' female ', ' 370303199901044440 ', 1001)Insert into ren values (' Zhao er ', 22, ' Male ', ' 370303199911044440 ', 1003)Insert into ren values (' Chenhe ', 31, ' Male ', ' 370303199912044440 ', 1001)Insert into ren values (' Franklin Wang Blue ', 32, ' Female ', ' 370303199904044440 ', 1004)Insert into ren values (' Baby ', 33, ' Male ', ' 370303199903034440 ', 1004)Insert into ren values (' Li Chen ', 34, ' female ', ' 370303199903224440 ', 1004)Insert into Ren values (' F