-- (1)
WHERE
NLSSORT(col,'NLS_SORT=JAPANESE_M') >= NLSSORT('a','NLS_SORT=JAPANESE_M')
AND NLSSORT(col,'NLS_SORT=JAPANESE_M') < NLS_SORT('b','NLS_SORT=JAPANESE_M')
-- (2)
WHERE
NLSSORT(col,'NLS_SORT=JAPANESE_M') >= NLSSORT('A','NLS_SORT=JAPANESE_M')
AND NLSSORT(col,'NLS_SORT=JAPANESE_M') < NLSSORT('b','NLS_SORT=JAPANESE_M')
-- (3)
WHERE
NLSSORT(col,'NLS_SORT=JAPANESE_M') >= NLSSORT('A','NLS_SORT=JAPANESE_M')
AND NLSSORT(col,'NLS_SORT=JAPANESE_M') < NLSSORT('B','NLS_SORT=JAPANESE_M')
WHERE
NLSSORT(col,'NLS_SORT=JAPANESE_M') >= NLSSORT('あ','NLS_SORT=JAPANESE_M')
AND NLSSORT(col,'NLS_SORT=JAPANESE_M') < NLSSORT('い','NLS_SORT=JAPANESE_M')
--
WHERE
NLSSORT(col,'NLS_SORT=JAPANESE_M') >= NLSSORT('ア','NLS_SORT=JAPANESE_M')
AND NLSSORT(col,'NLS_SORT=JAPANESE_M') < NLSSORT('イ','NLS_SORT=JAPANESE_M')