移除字符串左边的字符: CREATE FUNCTION [dbo].[RemoveLeftChar] ( @Expression varchar(max), @char varchar(4))RETURNS varchar(max)ASBEGIN WHILE LEN(@Expression)>0 AND CHARINDEX(@char,@Expression)=1 BEGIN SET @Expression=SUBSTRING(@Expression,LEN(@char)+1,LEN(@Expr
Given a string, find the length of the longest substring without repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. Example 2: Input: "bbbbb" Output: 1 Explana
最长无重复字符的子串 Given a string, find the length of the longest substring without repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The answer is "abc", with the length of 3. Example 2: Input: "bbbbb" Output
help_topic表是数据库mysql下的一个表 SUBSTRING_INDEX(s, delimiter, number) 返回从字符串 s 的第 number 个出现的分隔符 delimiter 之后的子串. 如果 number 是正数,返回第 number 个字符左边的字符串. SELECT SUBSTRING_INDEX('a*b*c*d*e','*',3); ---- a*b*c 如果 number 是负数,返回第(number 的绝对值(从右边数))
Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb" is "abc", which the length is 3. For "bbbbb" the longest subst
oracle常用经典SQL查询 常用SQL查询: .查看表空间的名称及大小 )),) ts_size from dba_tablespaces t, dba_data_files d where t.tablespace_name = d.tablespace_name group by t.tablespace_name; .查看表空间物理文件的名称及大小 select tablespace_name, file_id, file_name, ),) total_space from dba_