```sql SELECT salary, NVL(commission_pct, 0), (salary12) + (salary12*NVL(commission_pct, 0)) annual_salary FROM employees; ``` 输出: NVL2(expr1, expr2, expr3) : The NVL2 function examines the first expression. If the first expression is not null, then the NVL2 function returns ...
This Oracle tutorial explains how to use the Oracle / PLSQL NVL2 function with syntax and examples. The Oracle / PLSQL NVL2 function extends the functionality found in the NVL function.
NVL2(commission, salary + commission, salary)FROMcompensationsWHEREeffective_date >=2017-01-01';Code language:SQL (Structured Query Language)(sql) In this example, we used theNVL2()function to implement a logic that if the commission IS NOT NULL, then the total compensation is just salary. In...
SQL-Referenz SQL-Befehle SQL-Funktionen SQL-Bedingungen Verschachtelte Daten abfragen Dokumentverlauf Diese Seite wurde nicht in Ihre Sprache übersetzt. Übersetzung anfragenNVL2 functionPDFRSS Returns one of two values based on whether a specified expression evaluates to NULL or NOT NULL.Syntax...
MySQL函数(自定义函数),MySQL存储过程是事先经过编译并存储在数据库中的一段SQL语句的集合,函数一般用于计算和返回一个值,通常用来进行一些计算。 创建自定义函数 CREATE FUNCTION 函数名(参数1 参数类型, 参数2 参数类型) RETURNS 返回值类型 BEGIN DECLARE 变量 变量类型; ...
Function expressions Conditions Comparison condition Logical conditions Pattern-matching conditions LIKE SIMILAR TO POSIX operators BETWEEN range condition Null condition EXISTS condition IN Condition SQL commands ABORT ALTER DATABASE ALTER DATASHARE ALTER DEFAULT PRIVILEGES ALTER EXTERNAL VIEW ALTER FUNCTION ALTE...
SQL Fundamentals || Single-Row Functions || 通用函数 General function Oracle自己提供的有特色的函数; NVL()和DECODE()是通用函数的基础函数,其他函数都在此函数之上进行功能扩充。 函数名称 描述 NVL(数字 | 列 , 默认值) 如果显示的数字是null的话,则使用默认数值表示 ...
SQL> create or replace function sleep_now return number is 2 i number; 3 begin 4 i :=0; 5 while8 6 i<=1000000 7 loop 8 i :=i+1; 9 end loop; 10 return i; 11 end; 12 / --创建一个sleep_now函数,目的是为了加长sql执行的时间 ...
SQL> create or replace function sleep_now return number is 2 i number; 3 begin 4 i :=0; 5 while8 6 i<=1000000 7 loop 8 i :=i+1; 9 end loop; 10 return i; 11 end; 12 / --创建一个sleep_now函数,目的是为了加长sql执行的时间 ...
SQL Server does not support the ZEROIFNULL function. However, its functionality can be easily replaced in several ways. For example: DECLARE @val INT=10 --1 SELECT CASE WHEN @val IS NULL THEN 0 ELSE @val END AS Val --2 SELECT IIF( @val IS NOT NULL, @val, 0 ) AS Val ...