在SQL Server中，回车符的AASCII码是13，换行符的ASCII码是10，制表符t的ASCII码CHAR(9)
1，回车符
查找有回车符的内容

select id,theme from TableName where charindex(char(13),theme) > 0
清除回车符

update TableName set theme=replace(theme, char(13),‘’) where 1=1
2，换行符
查找有换行符的内容

select id,theme from TableName where charindex(char(10),theme) > 0
清除换行符

update TableName set theme=replace(theme, char(10),‘’) where 1=1
3，制表符t
查找有制表符的内容

select id,theme from TableName where charindex(char(9),theme) > 0
清除制表符

update TableName set theme=replace(theme, char(9),‘’) where 1=1
4，回车换行符
查找有回车换行符的内容

select id,theme from TableName where charindex(char(13) + char(10),theme) > 0
清除回车换行符

update TableName set theme=replace(theme,char(13) + char(10),‘’) where 1=1