替换字符串空格、tab制表符

\0    ASCII 0 (NUL ) 字符\'  ASCII 39 单引号 (“'” ) 字符\"  ASCII 34 双引号 (“"” ) 字符\b    ASCII 8 退格符\n    ASCII 10 换行符\r    ASCII 13 回车符\t    ASCII 9 制表符(TAB )

查询字段是否存在tab制表符：select * from crm_special_link t where instr(t.link_number,chr(9))>0替换空格、tab制表符：update crm_special_link set link_number = replace(link_number,' ','');update crm_special_link set link_type = replace(link_type,' ','');update crm_special_link set link_number = replace(link_number,chr(9),'');