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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.
27 Σεπ 2010 · Solution with utl_encode.base64_encode and utl_encode.base64_decode have one limitation, they work only with strings up to 32,767 characters/bytes. In case you have to convert bigger strings you will face several obstacles.
This tutorial shows you how to use the Oracle DECODE() function to add the procedural if-then-else logic to SQL queries.
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.
24 Νοε 2018 · In MySQL, the FROM_BASE64() function decodes a base-64 encoded string and returns the result. More specifically, it takes a string encoded with the base-64 encoded rules used by TO_BASE64() and returns the decoded result as a binary string.
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).
This Oracle tutorial explains how to use the Oracle / PLSQL DECODE function with syntax and examples. The Oracle / PLSQL DECODE function has the functionality of an IF-THEN-ELSE statement.
