CREATE TABLE table_203_279 (id NUMBER, "interferometer and observing mode" CLOB, "waveband" CLOB, "limiting magnitude" NUMBER, "minimum baseline  ( m ) \ ( un-projected ) " NUMBER, "maximum baseline  ( m ) " NUMBER, "approx. no. visibility measurements per year\ ( measurements per night x nights used per year ) " NUMBER, "max ratio of no. phase / no. amplitude measurements\ ( measure of imaging performance ,  0 = none ) " NUMBER, "accuracy of amplitude2 measurements" CLOB, "accuracy of phase measurements\ ( milli-radians ) " NUMBER, "number of spectral channels\ ( max in use simultaneously ) " CLOB, "comments" CLOB)

which interferometer has the highest maximum baseline ?
SELECT "interferometer and observing mode" FROM table_203_279 ORDER BY "maximum baseline (m)" DESC LIMIT 1
SELECT "interferometer and observing mode" FROM "table_203_279" ORDER BY "maximum baseline (m)" DESC FETCH FIRST 1 ROWS ONLY