CREATE TABLE table_204_148 (id DECIMAL, "name" TEXT, "elected" TEXT, "term began" TEXT, "term ended" TEXT)

did charles royer hold office longer than paul schell ?
SELECT (SELECT "term ended" - "term began" FROM table_204_148 WHERE "name" = 'charles royer') > (SELECT "term ended" - "term began" FROM table_204_148 WHERE "name" = 'paul schell')
SELECT (SELECT "term ended" - "term began" FROM "table_204_148" WHERE "name" = 'charles royer') > (SELECT "term ended" - "term began" FROM "table_204_148" WHERE "name" = 'paul schell')