Hello i have this doubt how can i search in a sql query both upper case and lower case at the same time?

Everytime i use for example "MYQUERY" it searches all the matches but it is not the same if place "myquery".

This is my code:

m.texto="%"+alltrim(thisform.pageframe1.page1.pageframe1.page5.text1.value)+"%"
if empty(m.texto) 
   =messagebox("please type something")
  else
	select llamadas.detalle as problema, llamadas.solucion as detalle;
	from llamadas;
	where llamadas.detalle like m.texto ;
	     and llamadas.bdc = .t. ;
	into cursor bcproblemas3
	report form bcinforme.frx preview
endif	

thanks for your help.