Table: ngc_objects_6001_7000_2
Columns: ngc_number
object_type
constellation
right_ascension_j2000
declination_j2000

Question: Name the total number of NGC number for sagittarius and diffuse nebula with declination of °02′
SQL: SELECT COUNT("ngc_number") FROM ngc_objects_6001_7000_2 WHERE "constellation" = 'sagittarius' AND "object_type" = 'diffuse nebula' AND "declination_j2000" = '°02′'

Question: I want to know the right ascension which has an NGC less than 6575 and declination of °38′00″
SQL: SELECT "right_ascension_j2000" FROM ngc_objects_6001_7000_2 WHERE "ngc_number" < 6575 AND "declination_j2000" = '°38′00″'

Question: Name the right ascension for sagittarius and NGC number larger than 6522 for open cluster and declination of °22′
SQL: SELECT "right_ascension_j2000" FROM ngc_objects_6001_7000_2 WHERE "constellation" = 'sagittarius' AND "ngc_number" > 6522 AND "object_type" = 'open cluster' AND "declination_j2000" = '°22′'