The following illustrates the syntax of the SQL DECODE() function: DECODE (e , s1, r1[, s2, r2], ...,[,sn,rn] [, d]); Code language: SQL (Structured Query Language) (sql) In this syntax: e is the argument searched for or compared with other arguments s1, s2, … sn. s1, s2, …, or sn is the expression to search for.

Oct 1, 2011 · DECODE was Oracle's proprietary solution to conditional SQL before CASE was available. The same logic could be expressed using DECODE like this: decode (my_value, 0, decode (sign (my_date - date '2011-01-10'), 1, 'Do this', 'Do that'), 'Do that')

Aug 6, 2024 · The DECODE() function is useful in data transformation since it simplifies complex logic by eliminating the use of IF ELSE or CASE statements. The DECODE() function also improves query readability, allowing efficient data manipulation. Let us examine the different use cases of the DECODE() function. Using CASE WHEN in SQL Server, PostgreSQL ...

Summary: in this tutorial, you will learn how to use the Oracle DECODE() function to embed if-then-else logic in SQL queries. 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).

Dec 8, 2016 · Create a function in SQL Server as below and replace the DECODE with dbo.DECODE. CREATE FUNCTION DECODE(@CondField as nvarchar(100),@Criteria as nvarchar(100), @True Value as nvarchar(100), @FalseValue as nvarchar(100)) returns nvarchar(100) begin return case when @CondField = @Criteria then @TrueValue else @FalseValue end end

Dec 26, 2012 · SELECT decode( money_return - Abs(money_return), 0, money_return * 10, abs(money_return) ) FROM cash_t; If the value is positive, deducting it from itself will return 0 and the first condition will be applied.

Dec 3, 2024 · The CASE, DECODE, COALESCE, GREATEST, IFNULL, and LEAST functions are some of the most useful conditional expressions in SQL, enabling us to handle multiple scenarios. In this article, we’ll explain how to use these SQL conditional expressions effectively with detailed explanations and examples.

Mar 13, 2023 · DECODE function in Standard Query Language (SQL) is used to add procedural IF – THEN – ELSE like statements to a query. It compares a given expression with each search value one by one and returns a result on the basis of outcomes received from the comparison.

Nov 6, 2020 · DECODE function allows us to add procedural if-then-else logic to the query. DECODE compares the expression to each search value one by one. If expression is equal to a search, then the corresponding result is returned by the Oracle Database or If a match is not found, then default is returned.

Oct 19, 2022 · The DECODE function in SQL, especially within Oracle databases, allows for incorporating conditional logic directly into SQL queries. This functionality enables the execution of operations similar to "if-then-else" statements found in procedural programming languages.