name
å
ä
ö
concat("*",name,"*")
*å*
*ä*
*ö*
min(name)	min(concat("*",name,"*"))	max(name)	max(concat("*",name,"*"))
å	*å*	ö	*ö*
name
ä
å
ö
concat("*",name,"*")
*ä*
*å*
*ö*
min(name)	min(concat("*",name,"*"))	max(name)	max(concat("*",name,"*"))
ä	*ä*	ö	*ö*
name
ä
ö
name
ä
å
ö
name
a	b
hello	hello
a	b
a	b
hello	hello