Simple Introduction to Oracle in RowNum and Row_number () use, example demo.Reference: http://www.cnblogs.com/zjrstar/archive/2006/08/31/491090.htmlLet's start by creating an example to illustrate, stealing a lazy, using the child's shoes above.Create TableStudent (IDChar(6), nameVARCHAR2(Ten));Insert intoStudentValues('200001','Zhang Yi');Insert intoStudentValues('200002','Wang er');Insert intoStudentValues('200003','lie triple');Insert intoStudentValues('200004','Zhao Four');Commit;1)Sql>
For a given dictionary, the following [html] i1 ii i1 one ii i1 i1 one ii i1 ii i1 ii i1 i1 1111 ii i4 ii i1 ii i4 ii i1 1117 ii i1 ii i1 i1 q i1 1113 ii i1 ii i1 ii i1 s an1 1119 ii i1 ii i1 ii i1 j iu3 1112 ii i1 ii i1 ii i1 i1 ee er4 1115 ii i1 ii i1 ii i1 i1 uu u3 1118 ii i1 ii i1 ii i1 B a1 1116 ii i1 ii i1 ii i1 l iu4 1114 ii i1 ii i1 ii i1 s iy4 1110 ii i1 ii i1 ii i1 i1 l ing2 a seven ii i1 ii i1 q i1 here skipped when many words are used for
file permissionsSetfacl-2. Getfacl View File permissions3, delete file permissions setfacl-x user:user4 file01.txt4, empty file permissions Setfacl-b file01.txt Erase all permissions to the file (restore the original state of the file permissions: 644) 5, create and deleteIn addition to file permissions: #需要对目录设置acl权限即可 setfacl-m u:user4:rwx mnt/Note: dr-xr-xr-x.2 root root 4096 May 14:19 mnt switch to directory for an instant requires the directory's X permission, otherwise you cannot switch d
provide more million-gigabit links.
Three, 100G type of Ethernet
In 802.3ba, the following types are defined for 100GE:
100gbase-cr10
100gbase-cr10 is the 100gb/s signal in the copper cable application of the specification, the 10x10g (based on 10GBASE-KR) of the parallel mode, transmission distance of 7m. It is mainly used in the interconnection between rack/cabinet or rack/cabinet.
100gbase-sr10
100GBASE-SR10 is a specification for 100GB/S signals to be applied on multimode fibers, and
RownumSelect from where 3 ; ROWNUM ID NAME 1 200001 one 2 200002 Wang ER4. rownum a query for a range of data:RowNum a query condition that is less than a value is true, RowNum is false for a query condition that is greater than a value, but it can be indirectly converted to true. Then use a subquery.For example, to query the data (inclusive) of rownum between rows 2nd through 3rd, let's first return records that are less
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.