Oracle中模拟SQL中的isnull函数 程序从MS SQL移植到ORACLE,面临大面积的SQL语句修改,其中用的最多的莫非isnull,虽然oracle中有nvl ,nullif, is null等函数,但却没有isnull。自己写一个吧,但是因为类似ISNULL(),NVL()的函数入参和返回值的数据类型都并不确定,要如何定义类型?姑且用varchar2吧:请看下面测试代码...
程序从MS SQL移植到ORACLE,面临大面积的SQL语句修改,其中用的最多的莫非isnull,虽然oracle中有nvl ,nullif, is null等函数,但却没有isnull。自己写一个吧,但是因为类似ISNULL(),NVL()的函数入参和返回值的数据类型都并不 AI检测代码解析 --创建isnull函数 createorreplacefunctionisnull(i_objinvarchar2, i_...
程序从MS SQL移植到ORACLE，⾯临⼤⾯积的SQL语句修改，其中⽤的最多的莫⾮isnull,虽然oracle中有nvl ,nullif, is null等函数，但却没有isnull。⾃⼰写⼀个吧，但是因为类似ISNULL(),NVL()的函数⼊参和返回值的数据类型都并不 --创建isnull函数 create or replace function isnull(i_obj in ...
OracleOracle does not have an ISNULL() function. However, we can use the NVL() function to achieve the same result:SELECT ProductName,UnitPrice*(UnitsInStock+NVL(UnitsOnOrder,0)) FROM ProductsMySQLMySQL does have an ISNULL() function. However, it works a little bit different from ...
请注意,ISNULL函数与NVL函数相同,后者是为了与Oracle兼容而提供的。 日期和时间显示转换 某些检查表达式数据类型需要从逻辑模式转换为ODBC模式或显示模式。例如日期和时间数据类型。如果替换表达式值不是相同的数据类型,则不能在ODBC模式或显示模式下转换此值,并生成SQLCODE错误:日期数据类型为-146;时间数据类型为-147。
The MS AccessIsNull()function returns TRUE (-1) if the expression is a null value, otherwise FALSE (0): SELECTProductName, UnitPrice * (UnitsInStock + IIF(IsNull(UnitsOnOrder),0, UnitsOnOrder)) FROMProducts; Oracle The OracleNVL()function achieves the same result: ...
Re: ISNULL functionPosted by: Joe Aponte Date: March 24, 2008 08:10AM Hi William, thanks for your help... but, my i assign this query result into a variable, how can i do?, zero rows?. Let me explain, if valor = 0, i am going to do a block of sentence.. but i don'...
SYS SYS$RAWTOANY TABLE/PROCEDURE FUNCTION 12640 SYSMAN EMD_MAINTENANCE TABLE/PROCEDURE PACKAGE 29030 SYSMAN EMD_MAINTENANCE BODY PACKAGE BODY 62930 SYSMAN MGMT_JOB_ENGINE BODY PACKAGE BODY 218914 SYSMAN EM_PING BODY PACKAGE BODY 29086 SYS DBMS_BACKUP_RESTORE BODY PACKAGE BODY 95519 ...
以下是引用片段: CREATE FUNCTION [DBO].[FUN_RATE] (@PARTID INT,@ENID INT,@SOURCEID... 分享回复赞 数据库111吧 R_猥琐 【数据111〓永恒】sql基本函数例如:EXEC sp_addtype birthday, datetime, 'NULL' 6,set nocount {on|off}使返回的结果中不包含有关受 Transact-SQL 语句影响的行数的信息。如果...
Re: ISNULL function 16696 Steve Brinton March 30, 2009 06:05AM Sorry, you can't reply to this topic. It has been closed. Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the op...