This SQL statement would return thesupplier_namefield if thesupplier_desccontained a null value. Otherwise, it would return thesupplier_desc. A final example using the NVL function in Oracle/PLSQL is: SELECT NVL
Example of DECODE and NVL functions Based on the Oracle SQL query shown in the diagram, here is the extracted SQL code and the result set: SQL Query: SELECT STATE, DECODE(STATE, 'HI', 'Remote US state', 'AK', 'Continental US state', 'Contiguous US state') LOCATION FROM CUSTOMER; ...
There are several functions in SQL, such as NVL and ISNULL, that perform some kind of logic on the values that are provided. Learn what they all do and see some examples in this article. SQL Logical Functions in This Guide In this article, we’ll look at a few logical functions in O...
问在PLSQL函数中使用NVLEN我创建了一个函数，它应该接受employee_id作为参数，并返回员工的总薪资。如果...
SHOW FUNCTIONS SHOW GROUPS 展示地点 SHOW PARTITIONS 显示过程 SHOW PROVIDERS SHOW RECIPIENTS SHOW SCHEMAS SHOW SHARES SHOW SHARES IN PROVIDER SHOW TABLE EXTENDED SHOW TABLES SHOW TABLES DROPPED SHOW TBLPROPERTIES SHOW USERS SHOW VIEWS SHOW VOLUMES ...
SQL 通用函数| NVL、NVL2、DECODE、jocket、NULLIF、LNNVL 和 NANVL 原文:https://www . geesforgeks . org/SQL-general-functions-nvl-nvl 2-decode-join-null if-lnnvl-nanvl/ 在本文中,我们将讨论一些强大的 SQL 通用函数,它们是——NVL 函数、NVL2 函数 开发文档
SQL Server The SQL ServerISNULL()function lets you return an alternative value when an expression is NULL: SELECTProductName, UnitPrice * (UnitsInStock + ISNULL(UnitsOnOrder,0)) FROMProducts; or we can use theCOALESCE()function, like this: ...
Hsql函数下_sql nvl函数 Hsql函数.下(窗口函数、分析函数、增强group) 参考链接:https://blog.csdn.net/scgaliguodong123_/article/details/60135385 1.窗口函数与分析函数 应用场景:(1)用于分区排序 (2)动态Group By (3)Top N (4)累计计算 (5)层次查询...
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 ...
NVL(e1,e2)Code language:SQL (Structured Query Language)(sql) returns the same result as COALESCE (e1, e2)Code language:SQL (Structured Query Language)(sql) However, theCOALESCE()function evaluates its argument in order and stops evaluation when it can determine the result i.e., when it can...