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16 Ιαν 2011 · You can use IF() where in Oracle you would have used DECODE(). mysql> select if(emp_id=1,'X','Y') as test, emp_id from emps;
1 Ιουν 2023 · The purpose of the Oracle DECODE function is to perform an IF-THEN-ELSE function. It’s similar to a CASE statement, but CASE is a statement where DECODE is a function. It allows you to provide a value, and then evaluate other values against it and show different results.
Oracle DECODE() function examples. Let’s take some examples of using the DECODE() function to see how it works. A) Use DECODE() function to make data more meaningful. See the following locations table in the sample database:
6 Αυγ 2024 · This tutorial provides a comprehensive guide to using the SQL DECODE() function in Oracle. I will also compare DECODE() to CASE WHEN in Oracle and help you understand when to use each function. Finally, I will provide code for the equivalent transformations in SQL Server, PostgreSQL, and MySQL.
The SQL DECODE() function allows you to add procedure if-then-else logic to queries. Let’s see the following example: SELECT DECODE (1, 1, 'Equal'); Code language: SQL (Structured Query Language) (sql) In this example, the DECODE() function compares the first argument (one) with the second argument (also one).
The SQL DECODE function is a database function used for conditional value replacement in a query result. It is primarily used in Oracle Database and a few other database systems. DECODE allows you to compare a value to a set of possible values and return a corresponding result when a match is found.
17 Σεπ 2023 · The DECODE_ORACLE() function compares expressions and returns the assigned value if they match. If no match is found, NULL is returned, or "Default" if specified. NULL values in expressions are also taken into account and can be compared with each other.
