nvarchar(max)长度测试:在使用convert强制类型转化之后 文本长度可以突破8000的上限.并且nvarchar(max)的最大长度可达到2^31以下为验证SQL: Declare @A nvarchar(max) set @A=replicate('*',9000); print len(@A) set @A=replicate(CONVERT(nvarchar(max),'*'),9000); print len(@A) set @A=replicate(CONVERT(nva
Write a program to print a histogram of the lengths of words in its input. It is easy to draw the histogram with the bars horizontal; a vertical orientation is more challenging. 统计输入中单词的长度,并且绘制相应的直方图.水平的直方图比较容易绘制,垂直的直方图较困难一些. /* This program was the
HTTP中的URL长度限制 首先,其实http 1.1 协议中对url的长度是不受限制的,协议原文: The HTTP protocol does not place any a priori limit on the length of a URI. Servers MUST be able to handle the URI of any resource they serve, and SHOULD be able to handle URIs of unbounded length
class NumberForm(BaseForm): querynumber = forms.CharField(error_messages={'required':u'请输入手机号'}) def clean_querynumber(self): number = self.cleaned_data.get('querynumber') re_number = r'^1(3|5|7|8)[0-9]{9}$' if len(number) >11 or len(number)<11 : ra
首先,其实http 1.1 协议中对url的长度是不受限制的,协议原文: The HTTP protocol does not place any a priori limit on the length of a URI. Servers MUST be able to handle the URI of any resource they serve, and SHOULD be able to handle URIs of unbounded length if they provide
SQL LEN() 语法 SELECT LEN(column_name) FROM table_name Id LastName FirstName Address City 1 Adams John Oxford Street London 2 Bush George Fifth Avenue New York 3 Carter Thomas Changan Street Beijing 现在,我们希望取得 "City" 列中值的长度. 我们使用如下 SQL 语句: SELECT L
