1、 S “ S “ o #: :2t bt?v M V 3 I k k k5 “ S “ : S “ : o # s : s i s5 i Y sAs5 k5 (r k5 s5B k5 Baes5l5 6s 10l5 =60s 1a o“d) B ZE$i B b 2ae o i B b 3a k q“d o“d uY “$i b 4a !9 o“d H1“d i% bW?b? H1 I n ty h b 5a I o1i | eZE i | eZE$ h B b 6a/ V I 1 $ RV A B C a1 b1 c2 a2 b3 c7 a3 b4 c6 a1 b2 c3 SV A B C
2、a1 b2 c1 a2 b2 c3 a4 b6 c6 a1 b1 c2 a3 b4 c6 TV B C D b1 c2 d4 b2 c1 d1 b2 c3 d2 V p/1“ Vr TT 1 RT 2 A,DS.B=T.B(ST) 7a I $ I $ uYb 8ae 1“ T?S “id?S1“i t5b 9a I “i? $ b 10a o“d ? !9 +1Z $ h B b =as5 4v5 = 90s 1an “d !9l5 10s 3l5 =30s C1 !9Bn 5 “d1n“a =a a 3a3 9 5 bX“DEPT “I|DeptNO a“ DeptName =Teache
3、r =|TNO a = Tname Course |CNO a CName a sCredit 3Student |SNO a 3 Sname a 3YSex b “d5 ?5 / S “ S “ o #: :aB“ V =B = s B“ aB“ V 3B 3 B“ aB = V q B V$ 3 aB 3 V B V$ 3 a 3 VM b p h/ !9 = 1y “d ERmb 1 pm L8“ k “ “ 1 L8“ n3 3 Woipo _p vlK 10s 2 y ERm !9 3NF1“ TiS 1“ T b 1 p1“ T L8“ “ k vlK 10s 3 !95 “d 3
4、10s 2. 35 “d !9 l5 10s 2l5 =20s f1“V StudentsSID SName Sex Dept PrizingSID PName Type PDate StudentsV 3 PrizingV 3b 1 P / SELECT S.SID,SName,PName,Type FROM Students AS S JOIN Prizing AS P ON S.SID=P.SID h ? P “q4N ?$i b 10s 2 4 ? o5 Students V SName y Bd “ SName_indb T P / SELECT * FROM Students WH
5、ERE SName like % h SName_ind ?4 i b 10s 3. T5 l5 10s 2l5 =20s Y T1aT2 T3 /Z Ti? A,B,C L ! A,B,C sYA=20 B=30 C=40b * 1 Y T24 o A,B,C ? 10s 2 Y T3 i? qi N H A,B,C ? 10s S “ S “ o #: :5 3m 4 9 5l5 5s 4l5 =20s C g r5 “d ?K 3 1H g r: c g r V ig r: cb“d1 i 3 Mg r: c M 365?9 b g r Vc # 3sY |103 ag r 83 aN83 a-83 a l I|43 ag rI|43 ag r HW83 b iV o“d i% : :vl 8KB 81923 : bW ig r i%g r HH: c t :ibb h9 o i g r V1 : “1 p9 Vb 1H g r: c 3$ 2 : Vibg r: cH $ 3 i Mg r9: c $ 41 :9 $
