CREATE TABLE table_45348 ("Date" TEXT, "Tournament" TEXT, "Winning score" TEXT, "Margin of victory" TEXT, "Runner ( s ) -up" TEXT)

What was the margin of victory at the LPGA Championship?
SELECT "Margin of victory" FROM table_45348 WHERE "Tournament" = 'lpga championship'
SELECT "Margin of victory" FROM "table_45348" WHERE "Tournament" = 'lpga championship'