SQL exercises

October 10, 00:19 MSK

SQL Exercises is intended for acquiring good practical experience, which is focused on data operation, namely on SQL DML. Certain exercises for beginners are provided on the site, they are supplied with the necessary reference source on SQL syntax with a great number of examples. Apart from them, 3 rating stages are suggested, they are aimed at testing of specialists and their certification. The source is absolutely free of charge, and the certificate purchase has a voluntary basis.
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SQL exercises

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Top 100 of the second stage at the
time of solving the exercise #4

No	Person	SolvedEx	LastEx	Minutes	Bad time
1	Yakutin N.V. (ZrenBy)	2	4	0	31
2	F S.S. (GR85)	2	4	1	36
3	Govorov E. (erxaan)	2	4	1	11
4	kkk K.K. (kkk777)	2	4	2	124
5	Asov (pofig)	2	4	2	18
6	Hughes (Kristen)	2	4	2	64
7	Gajdukov D.I. (BaoBab)	2	4	2	105
8	Chebakov (oiraoira)	2	4	2	26
9	yanzi (yanzi)	2	4	2	81
10	Lysenko O. (Oleg15062025)	2	4	2	354
11	Pup P.P. (pupa_pupa)	2	4	2	749
12	Kremen' Yu.A. (Test007)	2	4	3	149
13	Iljy (iljy)	2	4	3	19
14	Lapenko M.F. (Martha_pryde)	2	4	3	35
15	Kotov A. (Ckpa6)	2	4	3	20
16	Khaplanov A. (MatArs)	2	4	3	64
17	Fokin A. (Vizitor )	2	4	3	38
18	Timchenko S. (timka__s)	2	4	3	74
19	Shakh (Milfoil)	2	4	3	21
20	Maria (Gnommi Mari)	2	4	3	57
21	alex (alex882)	2	4	3	88
22	Antunez Garcia F. (antunez)	2	4	3	29
23	Vol'khin S.A. (Sergei Volkhin)	2	4	3	11
24	Shishkanova E.V. (Vred)	2	4	4	35
25	Smirnov G.S. (X-wave)	2	4	4	71
26	Sotnikov I.M. (rtwb)	2	4	4	26
27	Korolev A. (Gluck)	2	4	4	68
28	Leschev A.O. (ArtIMen)	2	4	4	66
29	Gromov A.P. (grap)	2	4	4	123
30	Evans (Skylar)	2	4	4	58
31	Bykova T. (TPetrova)	2	4	4	45
32	Borisenko I.N. (Igor.N.B.)	2	4	4	28
33	Larionov A. (mrDS777)	2	4	4	86
34	Gorodentsev A.N. (ANGorodentsev)	2	4	4	43
35	bobo T.D. (tibo)	2	4	4	133
36	Bradley (bcbradley)	2	4	4	1787
37	Shakurov T.D. (saladin_kzn)	2	4	4	24
38	Mikhajlov N.A. (Nikitos777)	2	4	4	37
39	Burundukov D. (dbu)	2	4	4	37
40	Tsaryapkin A.A. (tsaryapkin)	2	4	4	21
41	Basharin E. (eaniconer)	2	4	4	33
42	Myachin I.M. (getred)	2	4	4	45996
43	Agirre Kordova A.K. (Cordova)	2	4	4	75
44	Karpov I. (Dompaff)	2	4	4	22
45	Zavorotnev V.V. (vvz)	2	4	5	30
46	Makarov I.A. (_Bkmz_)	2	4	5	38
47	Rustem (Chesnok)	2	4	5	25
48	Zavalij I.V. (IrinaZavalii)	2	4	5	123
49	Sanko A. (count)	2	4	5	67
50	Tyutina I.S. (Irina)	2	4	5	45
51	Lobanov I.D. (CyberWind)	2	4	5	119
52	Lyakhovetskij V. (Sevolod)	2	4	5	73
53	Danilin (DVG85)	2	4	5	36
54	Tarshin S.N. (tsn)	2	4	5	29
55	Popov N.N. (Nicolay Popov)	2	4	5	12
56	LisperWhisper (LisperWhisper)	2	4	5	83
57	Pyzhov S.S. (Turin)	2	4	5	715
58	Kolobov I. (SQL Ape)	2	4	5	216
59	Borodin A. (Minamoto)	2	4	5	28
60	Kolos O. (the_bald)	2	4	5	16
61	Moskvin P. (Respect)	2	4	5	44
62	Efimova V. (captainX)	2	4	5	34
63	Kajkova I.V. (ira_kay)	2	4	5	16
64	Aleksandrov S. (akerman)	2	4	5	107
65	Morozov A.V. (DeadmoroZ)	2	4	6	74
66	Nogovitsyn A.A. (NoGo)	2	4	6	45
67	Senkevich S.V. (GreyC)	2	4	6	42
68	abakumov (Olejka)	2	4	6	76
69	q Q.Q. (bugnhunter)	2	4	6	83
70	Gorbonos M. (amg__)	2	4	6	85
71	Kovshov V.I. (Vsevolod)	2	4	6	34
72	Nameless (nameless_one)	2	4	6	91
73	Barvinsky R.O. (barik)	2	4	6	30
74	Leonov (leshy)	2	4	6	20
75	Proskurin Yu.N. (Xonner)	2	4	6	40
76	Denis (denis_super)	2	4	6	9502
77	P (prv178)	2	4	6	46
78	Tarasevich S. (Aprilfire)	2	4	6	25
79	Svezhintseva (Nadsv)	2	4	6	131
80	Hotskyy B. (Bohdan Hotskyy)	2	4	6	33
81	Koptel'tsev V. (selber)	2	4	6	28
82	Buzdogarov A.N. (Teh Kittiest One)	2	4	6	50
83	Ladonkin (Divankin)	2	4	6	35
84	Vorivodina N. (Nataly90)	2	4	6	4862
85	Kulishev M. (max kulishev)	2	4	6	15
86	Bauman O.Ya. (Lesya_B)	2	4	6	573
87	Bernardez J. (Jbsuise)	2	4	6	33
88	Tsarapkin D.I. (Tsarapkin)	2	4	6	19
89	Altynbaev R.Kh. (Ramil' A)	2	4	6	20
90	Antonovich M. (Masha279)	2	4	6	39
91	Kharitskij D.K. (Rognak)	2	4	6	265
92	Lyubomudrov R.G. (born2tilt)	2	4	6	38
93	Mamichev S.G. (SergeyMamichev)	2	4	6	45
94	Ladanova A.A. (Muzhelozhec)	2	4	6	756
95	Tsarin (ilya tsarin)	2	4	6	19
96	khomeriki I. (ikhomeriki)	2	4	7	20
97	Mullakhanov R.Kh. (rem)	2	4	7	13
98	Sviridov K.Yu. (orange)	2	4	7	21
99	Borisenkov D.V. (xuser)	2	4	7	37
100	Pesterev A. (PandNsk)	2	4	7	75

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Top 100 of the second stage at the time of solving the exercise #4

Top 100 of the second stage at the
time of solving the exercise #4