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),'');
