Oracle decode

It’s a useful function for comparing values. Learn more about this function and some examples in this video. Because they are equal, the function returns the second argument which is the string One. Hi, This helped me in understanding the difference between case and decode Quoting from an expert amoungst experts Billy Verreynne.

From what i know, in case of multiple condition checking, Case is simpler to write when compared to Decode. How can i use decode to deside a boolean variable.

They can transform a value into another value. But in Exadata , Decode is faster than CASE. The Decode operation is done at storage Server level where the data is present BUT CASE is done at DB Instance level which receives data from DB storage Level. Decode SQL represents one of the most powerful of all of the BIFs.

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Starting with 81 CASE is the standard way to achieve the same - with more meaning (case is easier to read and understand) and is the recommended function to use. DECODE is similar to IF_THEN-ELSE logic.

Everything decode can do, CASE can. Decode Function and Case Statement is used to transform data values at retrieval time. MS SQL Server (uuh…please lean forwards so that I can smack you. #128521; ), you would not be able to use this function. How to use a like operator in decode.

Using Like operator in decode. It is very handy when it comes to search a variable and return the result based on search. Basically, we can achieve the same in SQL Server using Case and IIF statements.

The Basics: What it is, and How it works. Note: Decode and Case are very similar in their appearance but can produce very different. As a rule, comparison to NULL should always return NULL. It accepts only scalar values. Baseencode your data in a hassle-free way, or decode it into human-readable format.

Enhancements over the years allow SQL to deliver much more robust analysis of data. Decode( , , ) first parameter always int, and the others parameters could be char, int or float. The decode functionality in oracle is something similar to if then else.

But what you have stated is select case. Oracle and ERP Failures of All Time. The following sections present a variety of examples illustrating the uses of conditional logic in SQL statements.

At the end of the decode statement we find a default value. The default value tells decode what to display if a column values is not in the paired list. ORACLE-BASE - DBA Scripts: base64decode.

The above example is evaluating the “supplier_id” field in a table, and specifying which values should be returned as “supplier_name”.