cbap designation

specifiesAlthough you can use the ORDER BY clause to specify the columns that you want to sort according to the column number of the column that is retrieved from the SELECT clause, you should try not to use the column number but explicitly specify the sort order from the maintenance of the code.Error: SELECT e.emp_no, E.ename, e.sal from emp e ORDER by 2;Yes: SELECT e.emp_no, E.ename, e.sal from emp e ORDER by E.ename;1-7. Insert column explicitly specifiedWhen you insert all columns on the ob

("5798ad1b3206da9bc38b236f"), "article": "AA bb cc", "Score": 1.3333333333333333} {"_id": ObjectId ("5798ad223206da9bc38b2370"), "article": "AA bb cc DD", "Score": 1.25} {"_id": ObjectId ("5798ad293206da9bc38b2371"), "article": "AA bb cc RR", "Score": 1.25} {"_id": ObjectId ("5798ae383206da9bc38b23"article": "AA", "score": 1.1}> restrictions used by full-text indexing (version 2.6.5) 1. You can specify only one $text query per query (a collection can only create one full-text index) 2. $text qu

allow root to maintain permissions, Root_squash is to map root to Nobody,no_all_squash do not keep all users in the Mount directory permissions. Therefore, the file owner created by Root is nfsnobody.Below we use normal user mount, write file test.#su-david$ Cd/tmp/david/$ Touch 2013davidOrdinary users write to the file is their own name, which will ensure the security of the server.On the analysis of permissions1. When the client connects, the check for the ordinary userA. If the identity of t

, Root_squash is to map root to nobody,no_all_squash own files can be changed. Therefore, the file owner created by Root is nfsnobody. Below we use normal user mount, write file test.1 su - flyme12 $ cd/data/3Touch AOrdinary users write to the file is their own name, which will ensure the security of the server.On the analysis of permissions1. When the client connects, the check for the ordinary userA. If the identity of the normal user is explicitly set, then the identity of the client user is

is converted to the specified user;B. If there is a user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the user identity is compressed into nfsnobody;2. When the client connects, the root checkA. If the No_root_squash is set, then the root user's identity is compressed to root on NFS server

1: # Subscribe to the Credit connection setup problem (only with login credit, other required credit is given later)2: # Get credit Documents3: # First behavior Microsoft Azure (WW)4: # Second act China Azure5:get-azurepublishsettingsfile6:get-azurepublishsettingsfile-environment Azurechinacloud7:get-azurepublishsettingsfile-environment Azurecloud8:9: # Import the credit file, no geographical designation (geographical

is converted to the specified user;B. If there is a user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the user identity is compressed into nfsnobody;2. When the client connects, the root checkA. If the No_root_squash is set, then the root user's identity is compressed to root on NFS server

, maximum likelihood estimate p (x, y) can reach the maximum value. Then, in the case of other parameters, re-estimate y, cycle, until convergence.The above explanation is somewhat puzzling, corresponding to the K-means, we do not know at the outset that each sample corresponds to the implied variable is the best category. At the very beginning you can specify one to give it, then in order to let P (x, y) max (here is to let J minimum), we find in the given C case, J minimum (the other unknown p

when we are testing or debugging, sometimes we will need to generate a size file, such as testing the storage system, you need to reduce the amount of disk space to 5G, the simplest way is to copy a 5G file, but from where to get files of such size, perhaps you think of a random file, It's a way to keep copying and finally merging, but with DD, you'll be easier and more flexible to implement .Let's introduce the use of DD in case-by-case. Let's see the first one. Generate a file with a

as:accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.82. Producers and consumersRequest phase: The client is the producer (the request content area data for the production Content-type media type), and the server is the consumer (Request content area data for the Content-type media type produced by the consumer client)Response phase: The server is the producer (the response body data specified by the production client request header parameter), and the c

user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the user identity is compressed into nfsnobody;2. When the client connects, the root checkA. If the No_root_squash is set, then the root user's identity is compressed to root on NFS server;B. If All_squash, Anonuid, Anongid are set, the roo

similar to mkdir-p supports recursive creation of directories-D recursively create the destination directory, and then copy the files-G,--group designation genus-O,--owner designation Master-M,--mode specify pattern# du shows the size of a file or directory650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/7D/8D/wKiom1bqadyiKrb1AAAcCaPyfaU932.png "title=" Qq2016031716240511.png "alt=" Wkiom1bqadyik

is converted to the specified user;B. If there is a user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the user identity is compressed into nfsnobody;2. When the client connects, the root checkA. If the No_root_squash is set, then the root user's identity is compressed to root on NFS server

set, then the identity of the client user is converted to the specified user;B. If there is a user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the user identity is compressed into nfsnobody;2. When the client connects, the root checkA. If the No_root_squash is set, then the root user's id

is converted to the specified user;B. If there is a user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the user identity is compressed into nfsnobody;2. When the client connects, the root checkA. If the No_root_squash is set, then the root user's identity is compressed to root on NFS server

the analysis of permissions1. When the client connects, the check for the ordinary userA. If the identity of the normal user is explicitly set, then the identity of the client user is converted to the specified user;B. If there is a user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the use

is converted to the specified user;B. If there is a user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the user identity is compressed into nfsnobody;2. When the client connects, the root checkA. If the No_root_squash is set, then the root user's identity is compressed to root on NFS server

information output by Linux drivers. The Specifies driver-related information, which is not required, but a complete Linux driver will specify these driver-related information, respectively: module author-using Module_author macro designation, module description-Using Module_ Description macro designation, module alias-specified with Module_alis macro, open source protocol-specified with Module_license ma

is converted to the specified user;B. If there is a user with the same name on NFS server, then the identity of the client login account is converted to the same user name as NFS server;C. If there is no explicit designation, there is no user of the same name, then the user identity is compressed into nfsnobody;2. When the client connects, the root checkA. If the No_root_squash is set, then the root user's identity is compressed to root on NFS server

1 Basic explanation:extern can be placed before a variable or function to mark the definition of a variable or function in another file, prompting the compiler to find its definition in other modules when it encounters this variable and function. Additionally, extern can be used for link designation. Which means that extern has two functions, the first one, when it is used with "C", such as: extern "C" void fun (int a, int b), tells the compiler to c