Decode in oracle

If expr is null, then Oracle returns the result of the first search that is also null. 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. Oracle started with the decode statement and later refined it in Oracle9i, morphing it into the case statement.

They can transform a value into another value. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Baseencoding and decoding in oracle - Stack.

HTML Entity decoding to Special characters. EDIT: Ok, so apparently this is a bug in some Oracle versions (. and 1. as it seems). Somebody solved it by wrapping the function. In SQL Server, you can use CASE expression that is also supported by Oracle. To return multiple values which function is used.

SQL statement (the values returned) should be single values (or a single datatype, which may be a collection of sorts). Decode Function and Case Statement is used to transform data values at retrieval time. What is the difference between XML publisher and BI Publisher? Questions Master What are the different types of Sales Orders in Order Management?

Using Like operator in decode. How to use a like operator in decode. Decode SQL represents one of the most powerful of all of the BIFs. DECODE is similar to IF_THEN-ELSE logic. Oracle decode SQL is used within the Oracle database to transform data.

As a rule, comparison to NULL should always return NULL. The Basics: What it is, and How it works. Although DECODE is very powerful, how it works is actually very easy to understand: It compares the expression passed in as the first argument, to each of the search values passed in subsequent arguments, one by one, and if it finds a match, returns the corresponding result, otherwise returns the default value. I was reading a function in Oracle namely “ Decode ”. It is very handy when it comes to search a variable and return the result based on search. It has been asked on multiple forums, what the EQUIVALENT of DECODE IN SQL SERVER is?

Basically, we can achieve the same in SQL Server using Case and IIF statements. Lets view the decode in Oracle. DECODE is a function in Oracle and is used to provide if-then-else type of logic to SQL.

It is not available in MySQL or SQL Server. In this article we are going to look at the similarities and differences between the Oracle DECODE function and the CASE statement. Some people say that the CASE statement is a better implementation of the DECODE function, and that “whatever you can do with a DECODE you can do with a CASE expression. Oracle Decode transform data values at retrieval time. In this SQL tutorial on DECODE , we are going to learn about Decode command in SQL (only applicable for Oracle ). Every database system has some special and useful SQL commands.

Oracle has an extremely powerful command known as DECODE. Please note that, using DECODE command is only possible in Oracle.