CREATE TABLE table_203_213 (id DECIMAL, "name" TEXT, "builder" TEXT, "type" TEXT, "date" TEXT, "works number" DECIMAL, "notes" TEXT)

how many locomotives were built after 1900 ?
SELECT COUNT("builder") FROM table_203_213 WHERE "date" > 1900
SELECT COUNT("builder") FROM "table_203_213" WHERE "date" > 1900