--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...
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)....
The RIGHT function returns a string that consists of the specified number of rightmost bytes or specified string unit from a string.
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...
Namespace: Microsoft.SqlServer.TransactSql.ScriptDom Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.DacFx.x64 v140.3881.1 Represents RIGHT call.C# 复制 [System.Serializable] public class RightFunctionCall : Microsoft.SqlServer.TransactSql.ScriptDom.Primar...
SIMILAR TO POSIX 运算符 BETWEEN 范围条件 Null 条件 EXISTS 条件 IN 条件 SQL 命令 ABORT ALTER DATABASE ALTER DATASHARE ALTER DEFAULT PRIVILEGES ALTER EXTERNAL SCHEMA ALTER EXTERNAL VIEW ALTER FUNCTION ALTER GROUP ALTER IDENTITY PROVIDER ALTER MASKING POLICY ...
(繼承自 TSqlFragment。) FragmentLength Gets the fragment length. (繼承自 TSqlFragment。) LastTokenIndex Gets or sets the last token index. (繼承自 TSqlFragment。) Parameters Gets a list of function parameters. ScriptTokenStream Gets or sets a list of token streams. (繼承自 TSqlFragment。)...
(繼承自 TSqlFragment)。 StartColumn 取得起始的資料行。 (繼承自 TSqlFragment)。 StartLine 取得起始的行。 (繼承自 TSqlFragment)。 StartOffset 取得片段起始位移的值。 (繼承自 TSqlFragment)。 回頁首 請參閱 參考 RightFunctionCall 類別 Microsoft.Data.Schema.ScriptDom.Sql 命名空間...