Joining tables
SELECT b.name, b.ra, b.dec, b.mag bmag,
r.mag rmag
FROM bsources b, rsources r
WHERE b.name = r.name;
result:
NAME
RA
DEC
BMAG
RMAG
---------- ---------- ---------- ---------- ----------
NGC1234
12.34
45.67
17.3
19.3
NGC4321
23.45
56.78
18.2
17.2