How can I store the character '\' in the DB?

[osman7king]

when I insert a values with character varying datatype and this data contain the '\' charater, this cause the warning like:
"nonstandar d use of \ in a string literal "

I tried to solve it by using '\\' but I got the same warning "nonstandar d use of \ in a string literal".

so, how can I solve this issue?

[rski]

Use 'E', like that

insert into test values (E'this is backslash character \\ inserted into table test');