Function decode sql

This tutorial shows you how to use the Oracle DECODE () function to add the procedural if-then-else logic to SQL queries. SQL DECODE () function syntax s s …, or sn is the expression to search for. The function compares the first argument with s s …, sn sequentially. If any comparison e = s e = s …, e = sn return true, the DECODE () function terminates the evaluation and returns the result. Database SQL Reference.

DECODE compares expr to each search value one by one. They can transform a value into another value. 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.

The decode function can be used in SQL for and IF- THEN-ELSE construction. The Oracle decode function. Using Oracle decode function.

The most powerful of all of the BIFs are the Oracle decode and Oracle case function. In SQL Server, you can use CASE expression that is also supported by Oracle. This video tutorial explains with proper example on how to write a decode statement, this video also. What Is DECODE () ○ DECODE ( ) vs CASE.

Description: DECODE is a shortcut for the so-called “simple CASE” construct, in which a given expression is compared to a number of other expressions until a . If expressionis equal to expression or both expressionand expressionare null, the . Learn about decode function in Oracle and how to mimic decode in MySQL and SQL Server. Also know about basedecode in MySQL and SQL Server. Compares the select expression to each search expression in order.

DECODE function allows you to implement IF-THEN-ELSE logic. DECODE (expr UNDEFINE pat UNDEFINE res UNDEFINED) RETURN UNDEFINED;. Decode Built-in Function. This page describes how to modify query using the DECODE and NVL functions.

This function is the SQL interface to the algorithm used by the server to encrypt MySQL passwords . Hi, I have to implement the below decode function in sql server. In which, if the variable is empty, then all the rows to be retrieved by the query. SQL defines some string functions that use key words, rather than commas,. DECODE Function is not available in SQL Server.

The syntax for basedecode is as MySQL to_base64(). Method similar to decode function in Oracle SQL. Post by: Gemini Moses , Ranch Hand. I am looking for methos similar to decode function.

If the values are equal, DECODE () returns result, otherwise default_value is returned. DECODE () allows you to perform if-then-else logic in SQL without having . I do a lot of SQL querying in Oracle and often find myself reaching for the DECODE SQL function (link), which is a bit like a lightweight CASE . SQL Functions Reference Conditional Expressions DECODE Expression. A DECODE expression replaces a specific value with either another specific . I am getting the parsing error while defining the object when using the custom SQL as.

It is very handy when it comes to search a variable and return the result based on search. Every other RDBMS of this level provides the CASE statement, which is also a part of the SQL.