Question: Name the least weeks for year less than 2000
SQL: SELECT MIN("Weeks on Chart") FROM "2-15143232-3" WHERE "Year" < 2000.0;

Question: Name the total number of weeks for si te vas and peak less than 7 and year less than 2000
SQL: SELECT COUNT("Weeks on Chart") FROM "2-15143232-3" WHERE "Track" = 'si te vas' AND "Peak" < 7.0 AND "Year" < 2000.0;