所以如果首尾是制表符、换行符等等【空白】，它们是不处理的~起码到sql 2k8 r2仍然如此。
【SQL】靠谱的TRIM函数,附赠过程一枚 /*--- 函数:去除头尾空白v0.01 Author:AhDung Update:201311301716 Rem:由于LEN不统计尾随空格,所以做特别处理 ---*/ALTERFUNCTIONdbo.Trim(@sVARCHAR(7999))RETURNSVARCHAR(7999)ASBEGINWHILEASCII(RIGHT(@s,1))IN(9,10,13,32)BEGINSET@s=LEFT(@s,CASEASCII(RIGHT(@s,...
Rem:由于LEN不统计尾随空格,所以做特别处理 ---*/ALTERFUNCTIONdbo.Trim(@sVARCHAR(7999))RETURNSVARCHAR(7999)ASBEGINWHILEASCII(RIGHT(@s,1))IN(9,10,13,32)BEGINSET@s=LEFT(@s,CASEASCII(RIGHT(@s,1))WHEN32THENLEN(@s)ELSELEN(@s)-1END)ENDWHILEASCII(@s)IN(9,10,13,32)BEGINSET@s=RIGHT(@...
Script Date: 11/18/2011 09:10:14 Author: EF ***/ IFEXISTS(SELECT*FROMsys.objectsWHEREobject_id=OBJECT_ID(N'[dbo].[trim]')ANDtypein(N'FN', N'IF', N'TF', N'FS', N'FT')) DROPFUNCTION[dbo].[trim] GO CREATEFUNCTIONdbo.trim ( @SourceVARCHAR(MAX), @CharCHAR(1) ) RETURNSVAR...
The TRIM function is a built-in SQL function that removes leading or trailing pad characters from character strings of 255 or fewer characters. By default, this pad character is ASCII 32, the blank space. If your locale supports a code set that defines a different white space character, TRIM...
3.Which SQL databases support the SQL TRIM() function? The TRIM() function is supported by most SQL database systems, including: PostgreSQL Oracle MySQL Each database might have slight variations in how the function is implemented, but the core functionality remains the same. ...
Object: UserDefinedFunction [dbo].[TRIM] Script Date: 11/18/2011 09:10:14 Author: EF ***/IFEXISTS(SELECT*FROMsys.objectsWHEREobject_id=OBJECT_ID(N'[dbo].[trim]')ANDtypein(N'FN', N'IF', N'TF', N'FS', N'FT'))DROPFUNCTION[dbo].[trim]GOCREATEFUNCTIONdbo.trim (@Source...
-- This SQL statement demonstrates the use of the TRIM() function in MySQL SELECT TRIM(' trim ') AS "Trimmed String" -- Apply the TRIM() function to --remove leading and trailing spaces from the string ' trim ' FROM DUAL; -- The DUAL table is a special dummy table used in MySQL...
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 ...
InOracle/PLSQL, thetrimfunction removes all specified characters either from the beginning or the ending of a string.The syntax for thetrimfunction is:trim( [ leading | trailing | both [ tr Oracle IE SQL oracle sql 原创 架构精进之路