- characters: 要去除的字符,默认为首尾空格 - string: 要去除空格或指定字符的字符串 示例: ```sql SELECT TRIM(' hello ') AS trimmed_string; -- 结果为 'hello' SELECT TRIM(LEADING '0' FROM '00012345') AS trimmed_string; -- 结果为 '12345' SELECT TRIM(BOTH '0' FROM '00012345') AS tri...
TRIM ( [ LEADING | TRAILING | BOTH ] [characters FROM ] string ) Or TRIM ( [ characters FROM ] string ) Or TRIM ( string ) 1. 2. 3. 4. 5. 参数说明 BOTH - 它从字符串的起始和结束位置删除指定的字符(默认位置行为)。 LEADING - 它从字符串的起始位置删除指定的字符。 TRAILING - 它从...
在SQL 中,`TRIM` 函数用于去除字符串的指定字符(默认为空格)或空白字符(包括空格、制表符和换行符)。 语法: ```sql TRIM([leading | trailing | both] [characters] FROM string) ``` - `leading`: 去除字符串开头的指定字符。 - `trailing`: 去除字符串末尾的指定字符。 - `both`: 同时去除字符串开头...
%List:如果string-expression是%List,TRIM只能修剪尾随字符,不能修剪前导字符。这是因为%List包含前导编码字符。必须将%List转换为字符串才能将TRIM应用于前导字符。 NULL:如果任一字符串表达式为NULL,TRIM将返回NULL。 示例 以下示例使用end_keyword和characters默认值;它从“abc”中删除前导和尾随空格。选择项将“^...
TRIM( [ charactersFROM] string ) SQL Server 2022 (16.x) 及更高版本、Azure SQL 托管实例和 Microsoft Fabric 的语法: 重要 你将需要将数据库兼容性级别设置为160才能使用LEADING、TRAILING或BOTH关键字。 syntaxsql TRIM( [LEADING|TRAILING|BOTH] [charactersFROM] string ) ...
TRIM( [ charactersFROM] string ) SQL Server 2022 (16.x) 及更高版本、Azure SQL 托管实例和 Microsoft Fabric 的语法: 重要 你将需要将数据库兼容性级别设置为160才能使用LEADING、TRAILING或BOTH关键字。 syntaxsql TRIM( [LEADING|TRAILING|BOTH] [charactersFROM] string ) ...
SQL TRIM() with leading character To remove the left most '1' from the string '1234567896541' from theDUALtable, the following SQL statement can be used : SQL Code: -- This SQL query trims leading characters from a given string and returns the result with an alias. ...
string1、string2等的数量可以是零个或多个,分别表示需要合并的字符串。 使用示例: 假设现在有一个名为employees的表格,其中包含员工的名字(first_name和last_name),需要将它们合并为一个字段(full_name)。 SELECT CONCAT(first_name, ' ', last_name) AS full_name FROM employees; ...
The TRIM() function removes the space character OR other specified characters from the start or end of a string.By default, the TRIM() function removes leading and trailing spaces from a string.Note: Also look at the LTRIM() and RTRIM() functions....
The optional first argument specifies which side of the string to trim: LEADINGremoves characters specified from the start of a string. TRAILINGremoves characters specified from the end of a string. BOTH(default positional behavior) removes characters specified from the start and end of a string. ...