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13 lis 2019 · The MySQL DECODE() function returns empty strings if the encoded string is an empty string. The DECODE() function accepts two parameters which are the encoded string to be decoded and the password string to decode the encoded string.
DECODE allows you to compare a value to a set of possible values and return a corresponding result when a match is found. It is often used for data transformation, simplifying complex CASE statements, and providing concise value substitution based on specific conditions.
8 sie 2023 · Example : MySQL decode () function using table. Sample table: testtable. Code: SELECT description, DECODE (description,'mypassw') FROM testtable; Explanation: The above MySQL statement retrieves the decoded data from encoded 'description' column from 'testtable'. Output:
22 sie 2013 · DECOD function in MySql can be replaced with CASE construct. LPAD function in MySql is existent
SELECT DECODE (3, 1, 'Equal 1,', 2, 'Equal 2', 'Not Equal 1 or 2'); Code language: SQL (Structured Query Language) (sql) This example works like the following IF-THEN-ELSEIF-ELSE statement: IF 3 = 1 THEN RETURN 'Equal 1'; ELSE IF 3 =2 THEN RETURN 'Equal 2'; ELSE RETURN 'Not Equal 1 or 2'; END IF ; Code language: SQL (Structured Query Language ...
6 sie 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.
10 lip 2023 · The base64_encode () function encodes binary data to Base64 string, while the base64_decode () function decodes Base64 string back to binary data. Using the built-in Base64 encoding and decoding functions in MySQL ensures security and reliability.
