collation

Generally used in Chinese is the collation of the UTF8 character set and the Utf8_general_ci Why choose either of these two ways can refer to ~ ~ ~ which post ~ next to find stickers up Mysql>create DATABASE IF not EXISTS my_db default charset UTF8

Encountered in a project: the original database generated by the script, and then deployed to the new server, the database of SQL_Latin1_General_CP1_CI_AS how to query out the Chinese characters are garbled.The solution is then checked.Need to

Linux common commands (partial)Ready to install the VMware Virtual machine first, install the CentOS image file1:linux directory structure (partial)/bin Common system Command directory/boot Command Directory/etc configuration file directory/Home

Take advantage of these days to find a job, some knowledge simple collation, the formation of logic, internal absorption, and really can be easily written, ready to use, really become the bones of things rather than will "use", and will not "write"!

"Data Collation" Cisco [ACL]Access-list{1)  Standard access list: range:  (1 to 99)  check:  Ipusage: access-list access-list-number {permit|deny} source [wildcard-mask]test  conditions: Check all the address bits  (Match all) an ip 

"Data Collation" Cisco [Shell, Command]Promot mode{user mode:router> (input: enable) privilege mode:router# (input:conf t) Global config mode:router (Config) #----ctrl-z -> pm, exit ->  Gcminterface:router (config-if) #Sub-interface:router

"Data Collation" Cisco [VLAN]VLAN{ISL (Inter-switch link) 802.1qVTP (vlan trunking protocol): server, client,  transparent# build VlanS1 (config) #vlan  2s1 (Config-vlan) #name  saless1 (config) #vlan  3s1 (Config-vlan) # name marketing# assigning

JavaScript Regular expression Knowledge collation 1. Regular Expression Mind Mapping2. Regular Expressions Common Example 2.1 remove all tags, leaving only innertextvar html = "ruby louvreby test "; var text = Html.replace (//g, ""); alert (text)2.2

Some commands are very common, but a period of time not to forget, the daily use of the collation down, the specific parameters used to write. View Image: Display View File contents: Cat/tail View process: PSKill process: Kill Find:

Linux file type and color identification collation Shrink Write File type Anglo - Dutch Color - Normal file Regular file White D Catalog files Dirrectory file Blue

Speaking of operators, basically all kinds of programming languages are involved, the use of a similar way. Here is a simple collation of JavaScript here today.In general, operators are more than the comparison, can be divided into the following

I. Document specification1, files are archived to the agreed directory.Specific requirements through the Watercress CSS specification to explain:All CSS is divided into two main categories: generic and Business classes. A generic CSS file, which is

Since studying. NET, elegant programming style, extremely simple extensibility, strong enough to develop tools, minimal learning curve, let me have a strong interest in this platform, in the work and study also accumulated a number of open source

1, concat () to connect two or more arraysThis method does not change an existing array, but merely returns a copy of the connected array.For example: Copy Code code as follows: Output results:1,2,3,4,5,11,22,33 2. Join ()

It turns out, if not often with the code, the statement deal with, people will be over face not, the brain will feel a face, do not know what to do wrong, this long memory, the statement, not only to strengthen the memory of the SQL statement, but

the use of//case, as well asSELECT CaseRegtype when 1 Then 'Monthly Card' when 0 Then 'Zhou Ka' when 2 Then 'Quarterly Card' when 3 Then 'Annual Card' ELSE

Linux centos6.x Common Query command collation----1. System basic Information----View System versioncat /etc/redhat-release[[email protected] ~]# cat /etc/redhat-releaseCentOS release 6.9 (Final)View Processor Architecturearch 或 uname

Summarize: Utf8_unicode_ci and Utf8_general_ci have no real difference between Chinese and English.Utf8_general_ci proofreading speed is fast, but the accuracy is slightly worse.Utf8_unicode_ci accuracy is high, but the proofreading speed is

Add "a" "a" "C" "C" "a" 5 elements to the set collection and the list collection respectively, and observe whether the duplicate value "a" can be successfully added in the list collection as well as in the set collection.Import

Methods to compare with regular expressionsvar _val = ' 1234 '; var /^[a-z\d]+ (\.[ a-z\d]+) *@ ([\da-z] (-[\da-z])?) +(\. {A} [a-z]+] +$/; Write regular expressions between double slashes_val.match (_ev); //Return result is ture or false this is