how to decode

Text transfer from Freespider to WeiboLook at other people's SQL today look at this inside there are also decode () function, has never been in contact with the Internet to check a bit, but also very useful for a function, write down hope to help

Process Control Function DECODEIntroduction to the Decode () function:Main functions:Translate the results of the query into other values (i.e. in other forms, as illustrated below);How to use:Select decode (ColumnName, value 1, translation value 1,

Decode is translated as decoding or decoding, because it can translate the query results into content that is easy for the user to understand.Grammar:Expr: An expressionSearch: Searching for valuesResult: Results valueDefault: DefaultsThe first

Introduction to the Decode () function:Main role: Translation of query results into other values (that is, in other forms of expression, the following examples);How to use:Select decode (ColumnName, value 1, translation value 1, value 2, translation

Introduction to the Decode () function:Main role: Translation of query results into other values (that is, in other forms of expression, the following examples);How to use:Select decode (ColumnName, value 1, translation value 1, value 2, translation

Cited:To illustrate this, a score table is created, as shown in:Comparison:1, in SQL, these two functions we can only use case, the code and the results are as follows:Select Name,Case SubjectWhen ' Chinese ' then 1When ' math ' then 2When ' English

Process Control function DECODEIntroduction to the Decode () function:Main functions:Translate the results of the query into other values (i.e. in other forms, as illustrated below);How to use:Select decode (ColumnName, value 1, translation value 1,

Decode (condition, value 1, return value 1, value 2, return value 2,... Value N, return value N, default value)The function has the following meanings:IF condition = value 1 ThenRETURN (translation value 1)elsif condition = value 2 ThenRETURN

SELECT * from A ORDER by DECODE (Aa, NULL,Ab) ;Aa Ab--------    ----------1 19 null        2 3 14 10 with decode When a function's statement is sorted, it is found that the AA field in a row is null when

Introduction to the Decode () function:Main role: Translation of query results into other values (that is, in other forms of expression, the following examples);How to use:Select decode (ColumnName, value 1, translation value 1, value 2, translation

Python uses the email module to encode and decode emails. Decode emailsThe email module provided by python is very interesting. It can be used to encode and decode emails and is very useful for processing emails.Processing a mail is a very

Decode () and NVL () function usage for SQL statementsSELECTDECODE (choose_tool,0, ' BMW ', 1, ' EV ', 2, ' bike ', ' walk ') as My_toolFromdata_tool_tAnalysis: When Choose_tool is 0, my_tool= ' BMW 'When Choose_tool is 1, my_tool= ' EV 'When Choose_

1. Common usage of decode:Decode (condition, value1,result1[, value2, Result2],default_result)Decode is actually equivalent to an IF condition function condition equivalent to an input value, and value I is the parameter list, if the input value is

Meaning explanation:Decode (condition, value 1, return value 1, value 2, return value 2,... Value N, return value N, default value)The function has the following meanings:IF condition = value 1 ThenRETURN (translation value 1)elsif condition = value

Recently, the coding and decoding of Python2 and Python3 is confusing, and it is clear that the code and decoding of Python will be clearer after consulting with the cloud God.In this personal understanding combined with the great God's guidance to

The oracle function library provides many useful functions, such as nvl, sign, and round. The decode function is used in many cases. This function is used as follows: decode (expression, condition 1, result 1, condition 2, result 2 ,...) there are

In fact, the actual operations and related functions of the Oracle DECODE function are similar to the CASE or IF-THEN-ELSE statement, which is easy to operate, the following articles mainly describe the actual application of the Oracle DECODE

In the process of database development, it is often necessary to convert rows into columns or convert columns into rows to display data. However, when creating a table structure, we often cannot store data according to the display requirements,

Transfer from Forum: Http://club.topsage.com/thread-2468696-1-1.html Perl starts to use utf8 encoding internally to represent characters starting from 5.6. That is to say, there should be no problem in processing Chinese characters and other

Python encoding -- Decode error-output not UTF-8 Decode error-output not UTF-8. If you use sublime text2 to run python2. You will know how big this pitfall is. The default value of python3 is Unicode and that of python2 is ascii. So I searched a lot