decode function

1. Compare the size function SIGN Sign (x) or Sign (x) is called a symbol function. Its function is to take a certain number of symbols (positive or negative ):When x> 0, sign (x) = 1;When x = 0, sign (x) = 0;When x X can be a function or computing

When I read other users' SQL statements today, I still see the decode () function. I have never touched it before. I checked it online. It is quite a useful function, write it down and hope it will help you!     Decode () function

Syntax for the decode () function:1 Select decode (ColumnName, value 1, translation value 1, value 2, translation value 2,... Value n, translation value n, default value)23 from talbename45Where ...Where: ColumnName is the column defined in the

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

Decode function usage in OracleMeaning 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

The usage of the DB2 DECODE function generally uses CASE when data is queried and conditional judgment is required... WHEN the condition is equal, in addition to the CASE... you can also use the DECODE function. If you want to use like,>, -DECODE --

Environment: Ubuntu, Python 2.7Basic knowledgeThis program involves a number of knowledge points, listed here, not in detail, there are questions directly Baidu will have a bunch of.The request for the 1.URLLIB2 module sets HTTP requests, including

Using decode function to implement row variable column----Create a test tableCREATE TABLE Student_score (Name VARCHAR2 (20),Subject VARCHAR2 (20),Score Number (4,1));-----Inserting test dataInsert into Student_score (Name,subject,score) VALUES ('

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 value 1ELSEIF condition = value 2

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

DECODE (condition, value 1, return value 1, value 2, return value 2,... Value N, return value N, default value)DECODE (field or Field operation, value 1, value 2, value 3)The result of this function is that when the value of the field or Field

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

Php URL decode function corresponding to JavaScript URL encode function 1. Try using JS's encodeURI (), encodeURIComponent (), Escape () function for URL encoding,2. Using PHP UrlDecode function decoding, the results can not be decoded into normal

Author: eygle | English Version [indicate the source and author information and this statement in hyperlink form during reprinting]Link: http://www.eygle.com/archives/2005/10/oracle_howto_use_decode_function.html The syntax structure of the Decode

Oracle Decode () functions and case statements are all common use, so what is the difference between them? Here's a detailed description of The difference between the Oracle Decode () function and the case statement for your reference. First, give

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

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

One, decode () function1. GrammarDECODE (Control_value,value1,result1[,value2,result2 ...] [, Default_result]);Control _value: The value you are trying to process. The decode function compares this value to the subsequent sequence of even orders to

Decode (expression, search_1, result_1)Returns result_1 if expression results =search_1 results, similar to if elseDecode (expression, search_1, Result_1, search_2, result_2)Decode (expression, search_1, Result_1, search_2, Result_2, ....., Search_n,

Mysqlgt; selectif (11,10, 20); + --------------- + | if (11,10, 20) | + ----------------- + | 10 | + --------------- + 1ro Mysqlgt; select if (1 =, 20); + --------------- + | if (1 =, 20) | + ----------------- + | 10 | + --------------- + 1 ro