number (userid), so the userid of the table after the interception of 6 bits and then encrypted processing)Select Top substring (sys.fn_sqlvarbasetostr (hashbytes (' MD5 ', substring (UserID) -5,6)), Userid,len), SUBSTRING (Userid,len (UserID) -5,6), UserID from db_owner. SystemUser where db_owner. Systemuser.roleguid=25The result is that the data that was intercepted from the database and then encrypted is different from the value that we manually entered.We later found that we used the nvarch
First, the Windows environment method1:cmd find the PID running the server containerJps-vCases:C:\users\administrator>jps-v4856 Bootstrap-djdk.tls.ephemeraldhkeysize=2048-djava.util.logging.config.file=d:\soft\apache-tomcat-7.0.69\conf\logging.properties-djava.util.logging.manageR=org.apache.juli.classloaderlogmanager-djava.endorsed.dirs=d:\soft\apache-tomcAt-7.0.69\endorsed-dcatalina.base=d:\soft\apache-tomcat-7.0.69-dcatalina.home=D:\soft\apache-tomcat-7.0.69-djava.io.tmpdir=d:\soft\apache-tom
(FileName, "w", encoding= ' Utf-8 '), Ensure_ascii=false)3, Json.loads ()Json.loads () is used to convert data of type STR to Dict.ImportJsonname= {'a':'Zhangsan','b':'Lisi','C':'Mawu','D':'Zhaoliu'}jsdumps=json.dumps (name) jsloads=json.loads (jsdumps)Print(Name,'type is:%s'%type (name))Print(Jsdumps,'type is:%s'%type (jsdumps))Print(Jsloads,'type is:%s'%type (jsloads))Result is{'a':'Zhangsan','b':'Lisi','C':'Mawu','D':'Zhaoliu'} type is:class 'Dict'>{"a":"Zhangsan","b":"Lisi","C":"Mawu","D":"
Null
JSON decodes the corresponding table for the Python type conversion:
JSON
Python
Object
Dict
Array
List
String
Str
Number (int)
Int
Number (real)
Float
True
True
False
False
Null
None
2, Json.dump () and Json.load () are mainly used to read and write JSON file
#JSON data exchange, cross-language data exchange. first JSON processing plus ' ' into a string # Json.dumps encapsulated into str,json.loads take out#Pickle is the python internal data exchange language#dic= ' {' name ': ' Cay '} ' write#f=open (' Dog.txt ', ' W ')#F.write (DIC)#Fread=open ("Dog.txt", ' R ') Read#Data=fread.read ()#Print (type (data))#data=eval (data)#Print (Data ("name")) Import jsondic={'name':'cat'}# must double quotation mark {"Name": "Cay"}, #JSON processing, first put {
[1] common MIME types (general type): hypertext markup language text. HTML text/htmlxml document. XML text/xmlxhtml document. XHTML application/XHTML + XML plain text. TXT text/plainrtf text. RTF application/rtfpdf document. PDF
Oracle Trace Files
Oracle trace files are grouped into three categories:
One is the background alarm log file that records the activity of the background process during startup, shutdown, and running of the database, such as table space creation,
# Reference: the python standard library by example
12.9 JSON Module
JSON is JavaScript Object Notation. This module converts Python objects and JSON strings. Applicable to Python version 2.6 and later.The JSON module provides an API similar to pickle to convert the python objects in the memory into JavaScript Object symbols (JSON) sequences. JSON has many language implementations (especially JavaScript ). Ajax applications are widely used between web servers and clients,
12.9.1 simple dat
Windows Server 2003 certification can obtain Windows Server 2008 certification through the upgrade exam, but Windows 2000 certificates need to be upgraded to WS 2003 and then WS 2008.
As Windows Server 2008 asks the city, Microsoft has also changed its certification ──MCSE (Microsoft Certified Systems Engineer) and MCSA (Microsoft Certified System Manager) and will be replaced by MCTS (Microsoft Certified Technical expert) and MCITP (Microsoft Certif
used to record the index information file of a table in mysql.Extract table data
[root@localhost recovery_mysql]# ./c_parser -4f pages-ibdata1/FIL_PAGE_INDEX/0000000000000001.page -t dictionary/SYS_TABLES.sql > dumps/default/SYS_TABLES 2> dumps/default/SYS_TABLES.sql[root@localhost recovery_mysql]# grep get dumps/default/SYS_TABLES | head -5000000000D1D 95000
18:51 0000000000000017.page-rw-r--r--1 root 114688 Dec 18:51 0000000000000018.page-rw-r--r--1 root 49152 Dec 18:51 0000000000000019.page-rw-r--r--1 root 49152 Dec 18:51 0000000000000020.page-rw-r--r--1 root 49152 Dec 18:51 0000000000000021.page-rw-r--r--1 root 65536 Dec 18:51 0000000000000025.page-rw-r--r--1 root 16384 Dec 18:51 18446744069414584320.page0000000000000001.page mainly records the table information file in MySQL0000000000000002.page is primarily the information file that records th
powerful, but what does eval do? The official demo of eval explains: Evaluate string 'str' as a valid expression and return the calculation result. BUT! Powerful functions have a cost. Security is its biggest drawback. Imagine that if we read from a file not a data structure, but a destructive statement similar to "delete a file", the consequences would be disastrous. Using eval bears this risk. Therefore, we do not recommend using the eval Method for deserialization (converting str to the data
between programming languages that are also based on these constructs.
( II) Python JSON module
PYTHON2.6 began adding JSON modules without additional downloads, and the process of serializing and deserializing Python's JSON modules was encoding and decoding respectively. encoding-converts a Python object encoding into a JSON string; decoding-converts the JSON format string decoding into a Python object. To use the JSON module, you must first import:
Import JSON
1. Processing o
MCSA and MCSE to enable their employees to learn how to deploy and manage the latest operating system technology).
Training resources
Getting a Microsoft Certified System Administrator (MCSA) certificate or other Microsoft certificate requires more than just learning about key topics and a small amount of mock practice, which is far from enough. Successful completion of the certification exams requires a
be exchanged between programming languages that are also based on these constructs.
( II) Python JSON module
Python2.6 began to add JSON modules without additional download, and the process of serializing and deserializing the JSON modules of Python is encoding and decoding, respectively. encoding-converts a Python object encoding into a JSON string; decoding-converts the JSON format string decoding to a Python object. To use the JSON module, you must first import:
Import JSON
1, processing o
application cannot be easily switched to the relational model, it is difficult to map objects to tuples and to map them back to objects. This difficulty is often referred to as the impedence-mismatch problem.
Some pickle Python
The pickle module and its similar modules cPickle provide pickle support for Python. The latter is coded in C and has better performance. this module is recommended for most applications. We will continue to discuss pickle, but the example in this article actually uses c
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.