A~Z :65~90 a~z :97~122 0-9 : 48-57 –汉字unicode编码范围:[0x4e00,0x9fa5](或十进制[19968,40869]) SELECT * FROM dbo.person WHERE UNICODE(zz) BETWEEN 19968 AND 40869 或 WHERE UNICODE(zz) BETWEEN 0x4e00 AND 0x9fa5 经常我们会用到判断某个字符或者字符串是否包含中文,英文,特殊符号等等.这时候可以通过
ubuntu系统修改静态IP的方法是在修改/etc/network/interfaces文件,而树莓派此文件下有说明: # interfaces() ) and ifdown() # Please note that this file is written to be used with dhcpcd # For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf' # Include files from /etc/network