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Syntax: DECODE( expression, search, result, search, result... , default ) Parameters: expression: It is used to specify the value to be compared. search: It is used to specify the value to be compared against expression. result: It is used to specify the value to return, if expression is equal to search.
Oracle DECODE() function syntax. The following illustrates the syntax of the Oracle DECODE() function: DECODE (e , s1, r1[, s2, r2], ...,[,sn,rn] [, d]); Code language: SQL (Structured Query Language) (sql) Arguments e. The first argument e is the value to be searched. The function automatically converts e to the data type of s1 before ...
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.
Syntax. The syntax for the DECODE function in Oracle/PLSQL is: DECODE( expression , search , result [, search , result]... [, default] ) Parameters or Arguments expression The value to compare. It is automatically converted to the data type of the first search value before comparing. search The value that is compared against expression.
Syntax. Description of the illustration decode.eps. Purpose. DECODE compares expr to each search value one by one. If expr is equal to a search, then Oracle Database returns the corresponding result. If no match is found, then Oracle returns default. If default is omitted, then Oracle returns null.
10 Ιουλ 2014 · DECODE(a, b,c, d,e, f,g, ..., h) will compare a to b, d, f, etc., in turn. If a is b, then DECODE returns c; if a is d, then DECODE returns e; and so on. If a is not any of these, then DECODE returns h. (The h is optional; the default return-value, if h is not given, is NULL.)
27 Δεκ 2023 · In this comprehensive guide, we will delve deep into the Oracle DECODE function, explaining its purpose, usage, potential pitfalls, and providing examples for clarity. Understanding Oracle DECODE Function; The Oracle DECODE function behaves similar to an IF-THEN-ELSE statement. It compares the first argument with the second argument.
