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28 wrz 2015 · To replicate nvl(A,B) but for 0 instead of null, you can do: WHEN A != 0 THEN A ELSE B END or Craig's more compact (but harder for others to read): NVL(NULLIF(A,0),B) I think that the following would also work: DECODE(A,0,B,A)
18 wrz 2015 · If you are using Oracle, Try this : IF NOT REGEXP_LIKE(string, pattern) THEN .... END IF;
This tutorial shows you how to use the Oracle LIKE operator to query data that match a specified pattern.
7 gru 2023 · Ensuring the when clauses are in the correct order is one of many things to be aware of when writing case expressions. In this post we’ll dive into: Simple case expressions. Searched case expressions. How to use case in select. How to use case in where. How to use case in joins. Case in PL/SQL.
The IF statement either runs or skips a sequence of one or more statements, depending on the value of a BOOLEAN expression.
This Oracle tutorial explains how to use the IF-THEN-ELSE statement in Oracle with syntax and examples. In Oracle, the IF-THEN-ELSE statement is used to execute code when a condition is TRUE, or execute different code if the condition evaluates to FALSE.
The simplest form of IF statement associates a Boolean expression with a sequence of statements enclosed by the keywords THEN and END IF. The sequence of statements is executed only if the expression returns TRUE. If the expression returns FALSE or NULL, the IF statement does nothing.
