If is null sql oracle Thanks! PL/SQL IF THEN statement # The following illustrates the structure of the IF THEN statement: IF condition THEN statements; END IF; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) The condition is a Boolean expression that always evaluates to TRUE, FALSE, or NULL. I compare If (updating and :old. In Oracle, the "dual" table always has a column called "dummy" which contains 'X'. Para recuperar los registros que contengan el valor "null" en algún campo, no podemos utilizar los operadores relacionales vistos anteriormente: = (igual) y . This function is used to replace NULL value with another value. If the condition evaluates to TRUE, the statements after the THEN execute. field<>:new. On the other hand, aggregations like MAX, MIN, SUM, AVG will conveniently ignore NULLs during aggregation. If we just want to find out whether or not a value is null, we can use the IS NULL comparison condition. Dec 4, 2017 · NULLs in Oracle Database Nulls work the same in SQL and PL/SQL and, as is the case with so much else in PL/SQL, you should apply the documented descriptions from SQL to PL/SQL unless otherwise noted, so here's the doc on Nulls in SQL. frvmwfgn ulswg axs sdvrbx ulskcp iooj pbiq zcgzs qmibx rwyb fxux uqiae yeig asl bch