--ORACLE数据库内创建LEFT CREATE OR REPLACE FUNCTION "LEFT" (str in varchar2,sublen in integer) return varchar2 is strlen integer; begin strlen := length(str); if sublen<=0 then return ''; elsif strlen<=sublen then return str; else return SUBSTR(str,0,sublen); end if; return ''...
Oracle数据库中是没有left() 和right() 函数的,若想按照DB2中对应的函数去使用,自己新建两个function即可,方法如下 LEFT CREATEORREPLACEFUNCTION"LEFT" (strinvarchar2,sublenininteger)returnvarchar2isstrleninteger;beginstrlen :=length(str);ifsublen<=0thenreturn''; elsif strlen<=sublenthenreturnstr;elsere...
Example of RIGHT Function with CHARINDEX A common use of the RIGHT function is when we need to get part of the string starting with some character. We can use the CHARINDEX function to find the starting position and use this value with the RIGHT function. In this example, we will get the...
SQL Copy Output The example below defines the number before the String using the left function. Example2 In this example, we take a string and a number. The number will be added to the left of the String using the left function. Declare @Name varchar(20)-- Declare a char Variable Set...
ExampleGet your own SQL Server Extract 3 characters from a string (starting from right): SELECT RIGHT('SQL Tutorial', 3) AS ExtractString; Try it Yourself » Definition and UsageThe RIGHT() function extracts a number of characters from a string (starting from right)....
SqlServer.TransactSql.ScriptDom Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.DacFx.x64 v140.3881.1 Represents RIGHT call. C# 複製 [System.Serializable] public class RightFunctionCall : Microsoft.SqlServer.TransactSql.ScriptDom.PrimaryExpression Inher...
问SQL Server:传递给RIGHT函数的长度参数无效EN需求：使用随机函数时，需要参数化某个参数，并且后面的...
Otherwise, use the CAST function to explicitly convert character_expression. integer_expression Is a positive integer that specifies how many characters of character_expression will be returned. If integer_expression is negative, an error is returned. If integer_expression is type bigint and contains...
The RIGHT function returns a string that consists of the specified number of rightmost bytes or specified string unit from a string.
The RIGHT function returns a string that consists of the specified number of rightmost bytes or specified string unit from a string.