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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).
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Summary: in this tutorial, you will learn how to use the...
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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.
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.)
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.
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.
Syntax. decode::= Description of the illustration decode.gif. 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.
