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2、RTRIM的功用和LTRIM相同,但是RTRIM修改成了从右向左的,这样子就是去掉后导符中的特定字符。 3、TRIM的功能如下描述: In Oracle/PLSQL, the trim function removes all specified characters either from the beginning or the ending of a string. The syntax for the trim function is: trim( [ leading |...
In Oracle/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 [ trim_character ] ] string1 ) leading- removetrim_stringfrom the front ofstring1. trailing- removetr...
If either trimCharacter or trimSource evaluates to NULL, the result of the TRIM function is NULL. Otherwise, the result of the TRIM function is defined as follows: If trimType is LEADING, the result will be the trimSource value with all leading occurrences of trimChar removed. If trimType...
Oracle TRIM OracleTRIM()function removes spaces or specified characters from the begin, end or both ends of a string. Syntax The following illustrates the syntax of the OracleTRIM()function: TRIM( [ [ LEADING | TRAILING | BOTH ] trim_character FROM ] trim_source)Code language:SQL (...
In Oracle/PLSQL, the trim function removes all specified characters either from the beginning or the ending of a string. The syntax for the trim function is: trim( [ leading | trailing | both ...
If you specify onlytrim_source, then Oracle removes leading and trailing blank spaces. The function returns a value with datatypeVARCHAR2. The maximum length of the value is the length oftrim_source. If eithertrim_sourceortrim_characteris null, then theTRIMfunction returns null. ...
由上述可以看出Oracle的LTrim的功能应该更强⼤⼀些，能够对前导符进⾏操作。2、RTRIM的功⽤和LTRIM相同，但是RTRIM修改成了从右向左的，这样⼦就是去掉后导符中的特定字符。3、TRIM的功能如下描述：In Oracle/PLSQL, the trim function removes all specified characters either from the beginning or the ...
的⽤法 In Oracle/SQL, the trim function removes all specified characters either from the beginning or the ending of a string. The syntax the trim function is: trim([leadingtrailing|both[trim_character]] string1) leading - trim_string from the front of string1. trailing -...
If you specify only trim_source, then Oracle removes leading and trailing blank spaces. The function returns a value with data type VARCHAR2. The maximum length of the value is the length of trim_source. If either trim_source or trim_character is null, then the TRIM function returns nul...