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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.
21 Αυγ 2012 · If you want to write your own functions to encrypt and decrypt data, you would simply want to call the DBMS_CRYPTO encrypt and decrypt methods with appropriate parameters (i.e. pick your encryption algorithm, your key, etc.).
The Oracle DECODE() function allows you to add the procedural if-then-else logic to the query. In the following example, the Oracle DECODE() function compares the first argument (1) with the second argument (1).
Example. The DECODE function can be used in Oracle/PLSQL. You could use the DECODE function in a SQL statement as follows: SELECT supplier_name, DECODE(supplier_id, 10000, 'IBM', 10001, 'Microsoft', 10002, 'Hewlett Packard', 'Gateway') result FROM suppliers;
The syntax for the DECODE function is as follows: DECODE(expression, search1, result1, [search2, result2, ...], [default]) Parameters: expression: The value or column to be evaluated. searchN: The search value to compare with the expression.
27 Δεκ 2023 · The Oracle DECODE function behaves similar to an IF-THEN-ELSE statement. It compares the first argument with the second argument. If they are equal, DECODE returns the third argument. If they are not, DECODE returns the fourth argument, if specified, or NULL if not.
20 Νοε 2016 · The Oracle DECODE function is a useful function for transforming data into the results that you want. Learn how to use it in this article. Step 1: First, Specify the Expression. The first part of using the DECODE function is to write the expression, which is the first parameter. This is the value that is checked against for the entire function.
