如果在charindex未指定start_location,或者 start_location为负数或 0,则将从expression2的开头开始搜索。 即:从本例中的str字符串中的i开始搜索,从1开始。当匹配到order时,返回在‘id=0916order by Name desc’中‘order’的起始位置,即为8. 本例中第一个substring从1位置开始,长度为7(8-1),截取字符串,即...
CHARINDEX('SQL', 'Microsoft SQL Server') 这个函数命令将返回在“Microsoft SQL Server”中“SQL”的起始位置,在这个例子中,CHARINDEX函数将返回“S”在“Microsoft SQL Server”中的位置11。 接下来,我们看这个CHARINDEX命令: CHARINDEX('7.0', 'Microsoft SQL Server 2000') substring用法 返回字符、二进制、文本...
如Mysql字符串截取总结：left()、right()、substring()、substring_index()。
@ExtensionStartRight = CHARINDEX('.',@path) SELECT SUBSTRING(@path,1,3) as drive, SUBSTRING(@path,LEN(@Path)-@fileNamePosition+2,@fileNamePosition-@ExtensionStartLeft-1) as filename, SUBSTRING(@path,@ExtensionStartRight+1,@ExtensionStartLeft) as extension, SUBSTRING(@path,1,LEN(@Path)-@...
Suppose you have a string column in a table that contains email addresses in the format “username@domain.com”. To extract only the domain name (i.e., the part after the @ symbol), you can use the SUBSTRING function along with the CHARINDEX function to locate the @ symbol and extract...
原数据为: 因为每个值后面都有一个共同的符合(分号),所以按分号进行定位 1)取第一个分号前的数值,比较容易 代码1为:left(remark,charindex(';',remark)-1) as zzno 或者:SUBSTRING(remark,1,charindex(';... 查看原文 SqlServer中截取(获取)字符串中特定字符分割的每个元素 ...
select SUBSTRING('12345678',1,4) 语法 CHARINDEX ( expression1 , expression2 , [ start_location ] ) 参数 expression1 一个表达式,其中包含要寻找的字符的次序。expression1 是一个短字符数据类型分类的表达式。 expression2 一个表达式,通常是一个用于搜索指定序列的列。expression2 属于字符串数据类型分类。
column)’ function in which the character is the special character in which the substring has begun and argument will be the column from which we can gain substring, and the third argument of SUBSTRING() function is the length of the substring which we can determine it by using CHARINDEX()...
SELECT CHARINDEX ('!','Hey! Good Morning My Friend! How are you doing?') as 'exclamatoryPosition'; and the output of the execution of the above query is as follows – Instead of the character, now let us search ceratin substring in the main string. Consider the following example, where...
解析 select substring('123,456',charindex(',','123,456') ,len('123.456')-3) 结果: ',456'意思:截取’123,456‘ 从第4为开始截取 4位substring(字段,第几个字符开始截取,截取长度)charindex(',','123,456') ‘,’的位置 结果为:4len('123.456') 字段长度 结果为:7 ...