CREATE TABLE table_204_268 (id NUMBER, "album/single" CLOB, "performer" CLOB, "year" NUMBER, "variant" CLOB, "notes" CLOB)

how many albums are performed by martin carthy or ewan maccoll ?
SELECT COUNT("album/single") FROM table_204_268 WHERE "performer" IN ('martin carthy', 'ewan maccoll')
SELECT COUNT("album/single") FROM "table_204_268" WHERE "performer" IN ('martin carthy', 'ewan maccoll')