1990 คืออะไร เมื่อปี 1997 เป็น '1R' และเมื่อทัวร์นาเมนต์เป็น 'Hamburg'?ไม่จำเป็นต้องใช้ตารางทั้งหมด
What is 1990, when 1997 is '1R', and when Tournament is 'Hamburg'?It is not neccessary to use all the tables.
 table_45555:  "Tournament" [ text]  "1988" [ text]  "1989" [ text]  "1990" [ text]  "1991" [ text]  "1992" [ text]  "1993" [ text]  "1994" [ text]  "1995" [ text]  "1996" [ text]  "1997" [ text]  "1998" [ text]  "1999" [ text]  "2000" [ text]  "2001" [ text]  "2002" [ text]  "2003" [ text]  "2004" [ text] 
SELECT "1990" FROM table_45555 WHERE "1997" = '1r' AND "Tournament" = 'hamburg'