CREATE TABLE "single_performance_statistics" (
  "tournament" text,
  "2007" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);

Question: What is the tournament when 2010 is not held?
SQL: SELECT "tournament" FROM "single_performance_statistics" WHERE "2010"='not held';

Question: What shows for 2009 when 2008 is A, 2012 is 1r, 2010 is q2, and 2011 is 2r?
SQL: SELECT "2009" FROM "single_performance_statistics" WHERE "2008"='a' AND "2012"='1r' AND "2010"='q2' AND "2011"='2r';

Question: What is the tournament when 2010 is q2, and 2009 is 1r?
SQL: SELECT "tournament" FROM "single_performance_statistics" WHERE "2010"='q2' AND "2009"='1r';

Question: What is the tournament when 2007 is WTA Premier 5 tournaments?
SQL: SELECT "tournament" FROM "single_performance_statistics" WHERE "2007"='wta premier 5 tournaments';

Question: What is the tournament when 2012 is q2?
SQL: SELECT "tournament" FROM "single_performance_statistics" WHERE "2012"='q2';

Question: What shows for 2008 when 2010 is 138?
SQL: SELECT "2008" FROM "single_performance_statistics" WHERE "2010"='138';