SQL exercises

May 25, 21:35 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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Top 100 results achieved on 10 latest exercises

(38DML, 39DML, 40DML, 41DML, 42DML, 12, 40, 233, 234, 262)

No	person	exs	score	minutes	last_ex
1	Chernov D.V. (Kursist)¹	10/10(2)	18	1188	sel 234 (2020-02-28)
2	Doschenko V.N. (mcrain)²	10/10(0)	18	3000	dml 42 (2020-04-08)
3	Koptel'tsev V. (selber)³⁵	10/10(2)	18	8183	sel 234 (2020-05-07)
4	Kreslavskij O.M. (Arcan)⁵	9/10(0)	15	130	sel 262 (2020-01-27)
5	Sigankov V.I. (vasilyvanc)³¹	9/10(0)	15	854	dml 42 (2019-12-02)
6	Krasovskij E.A. (pegoopik)³	9/10(1)	15	1813	dml 42 (2019-12-09)
7	Karasyova N.V. (vlksm)⁹	9/10(0)	15	2076	sel 262 (2020-04-25)
8	Filippkin D.V. (_dimon_)¹²	8/10(0)	14	381	sel 262 (2020-04-13)
9	Samarin A. (not.yet.sql.master)¹²⁸	7/10(0)	12	283	dml 42 (2020-05-09)
10	Milenkov (wqer)⁹⁵	7/10(0)	12	2050	dml 42 (2020-01-13)
11	Dubinskij A.V. (_velial)⁸	7/10(0)	12	2914	dml 42 (2019-12-25)
12	Varenikov D.M. (Dmitriy Varenikov)²⁰	7/10(0)	12	22498	dml 42 (2020-02-08)
13	Shkarednyj I.N. (Gosha)³⁴	7/10(0)	9	9001	sel 233 (2019-08-06)
14	Fedevych V.I. (labuch_fedev)³²	7/10(0)	8	281	sel 262 (2020-03-19)
15	Timofeeva E.V. (Umrikhina)²³	6/10(0)	8	281	dml 41 (2019-11-27)
16	Buldenkov D.A. (eXeQuThor)¹³⁰	6/10(0)	8	344	dml 41 (2019-10-28)
17	Fokin A. (Vizitor )⁴¹	6/10(0)	8	836	dml 41 (2019-08-16)
18	Dmitriev A. (Havr)¹⁴³	6/10(0)	8	1480	dml 41 (2019-07-30)
19	Vasilevskaya E.A. (kattiks)¹³⁶	6/10(0)	8	3445	sel 12 (2019-08-09)
20	Williams B. (BW)³⁶	6/10(0)	8	81405	dml 41 (2020-02-20)
21	Boiko D. (Angellore)⁶	6/10(0)	6	414	sel 12 (2019-05-23)
22	Kostomarov A.V. (al29)⁴	5/10(0)	6	8389	sel 262 (2019-06-25)
23	Latyntsev N.G. (aks_nsk)⁵⁰	5/10(0)	5	43	sel 12 (2019-05-11)
24	Petrov Y. (YuriPetrov)³³	5/10(0)	5	44	sel 12 (2019-07-04)
25	Kopylov A.V. (alegzey)²⁷⁵	5/10(0)	5	61	dml 40 (2019-09-02)
26	Balbekov A.G. (NtFire)²⁷⁹	5/10(0)	5	131	dml 40 (2019-09-03)
27	Zhulanov S.G. (borey.mdb)¹⁴²	5/10(0)	5	974	sel 12 (2019-07-20)
28	Kurochkin P.A. (qwrqwr)¹⁰	5/10(0)	5	1137	sel 12 (2019-04-14)
29	Pusev D.V. (Pusev_Denis)²⁹	5/10(0)	5	1785	sel 233 (2020-03-14)
30	Demin D. (demind74)¹³³	4/10(0)	4	21	dml 40 (2019-07-01)
31	Pyatiletov A. (MontaG)⁵⁵	4/10(0)	4	23	sel 12 (2019-06-30)
32	Panfilov A. (alexey.p4nfilov)¹³¹	4/10(0)	4	54	dml 40 (2019-06-06)
33	Pavlov A.V. (Anton)⁵⁶	4/10(0)	4	225	sel 40 (2019-06-04)
34	Osin V. (anyman1979)¹⁴⁴	3/10(0)	3	39	dml 40 (2019-11-03)
35	Azanov E.D. (Eugene_Azanov)⁹⁹⁶	2/10(0)	2	23	sel 40 (2020-05-19)
36	Zajtsev R.A. (PrideGoldFish)⁹²⁵	2/10(0)	2	24	sel 40 (2019-07-14)
37	Starodubtsev P. (pashila86)⁹⁸⁷	2/10(0)	2	25	sel 40 (2020-05-21)
38	Akhmedzyanov (datyzayebal)⁹⁸⁸	2/10(0)	2	26	sel 40 (2020-05-14)
39	Khamidov D. (damirr)⁵²⁹	2/10(0)	2	26	sel 40 (2020-05-15)
40	Efimova V. (captainX)⁴⁹⁰	2/10(0)	2	29	sel 40 (2020-03-13)
41	Familiya (WereWolf777)¹¹⁸	2/10(0)	2	35	sel 40 (2019-01-07)
42	Neboronov M.M. (maksoooun)⁵⁷³	2/10(0)	2	36	sel 12 (2019-07-06)
43	Kvochkin V. (ASEVlad)¹¹³³	2/10(0)	2	39	sel 40 (2020-01-25)
44	Borisenkov D.V. (xuser)⁹⁸	2/10(0)	2	40	sel 40 (2019-11-22)
45	Kisselev D. (ryan9)⁵⁹⁷	2/10(0)	2	41	sel 12 (2019-06-28)
46	Yakovlev M.V. (MikhailYakovlev535)²³⁰	2/10(0)	2	44	sel 12 (2019-07-09)
47	Tarshin S.N. (tsn)¹⁵⁴	2/10(0)	2	46	sel 12 (2019-07-01)
48	Vasil'ev A.A. (TruthFinder)⁷⁴⁰	2/10(0)	2	46	sel 40 (2019-10-06)
49	Burdenko Ya. (Bsl)¹¹³²	2/10(0)	2	48	sel 40 (2019-10-19)
50	Gireiko E. (Zubryonok)²⁵⁶	2/10(0)	2	57	sel 12 (2019-09-05)
51	Filatova O.E. (PolitechFox)¹⁰⁷⁶	2/10(0)	2	58	sel 40 (2019-07-08)
52	Podmarev E.A. (Podmarev)⁶¹²	2/10(0)	2	64	sel 40 (2020-04-12)
53	Burmistrov V.V. (Razorkell)³⁵³	2/10(0)	2	65	sel 40 (2019-08-07)
54	Safonov A.A. (funnym33)⁴⁹⁹	2/10(0)	2	69	sel 40 (2019-08-16)
55	Kuydinov D. (sh4rk717)⁶⁷⁰	2/10(0)	2	77	sel 40 (2019-09-21)
56	Shalavin D.E. (Juster81)²⁵⁰	2/10(0)	2	77	sel 40 (2019-09-25)
57	Rebrin A. (Hydra86)⁷⁵³	2/10(0)	2	80	sel 12 (2019-06-30)
58	Lyubomudrov R.G. (PB-77)⁶⁸⁵	2/10(0)	2	81	sel 40 (2019-11-06)
59	Litvinov V.V. (NewsMan)²⁵⁷	2/10(0)	2	81	sel 12 (2019-09-04)
60	Baskakov A. (solertia)⁵¹⁶	2/10(0)	2	90	sel 40 (2020-03-23)
61	Popov S.V. (PopovSV)⁷⁵⁵	2/10(0)	2	92	sel 40 (2019-09-23)
62	Komarov A.N. (Shveda Saulya)³⁴⁶	2/10(0)	2	99	sel 40 (2020-03-02)
63	Chukanov V.S. (VSC)⁴³⁹	2/10(0)	2	103	sel 12 (2020-03-17)
64	Pronina (Nnet)⁵⁴⁵	2/10(0)	2	104	sel 40 (2019-07-10)
65	Novozhilov A. (BertokMo)⁶⁷³	2/10(0)	2	107	sel 40 (2020-02-13)
66	Tymochko T. (Sunny_boy)⁷⁵⁸	2/10(0)	2	108	sel 40 (2020-01-15)
67	Alborov K.R. (albor)⁵⁷²	2/10(0)	2	108	sel 12 (2019-07-03)
68	Ushakov A.K. (andrew_ushakov)³⁶⁴	2/10(0)	2	112	sel 40 (2020-02-03)
69	Solov'yov E.I. (ty7ic)⁴⁰³	2/10(0)	2	112	sel 12 (2019-07-01)
70	Leschyov S.V. (SPMV)¹⁸⁰	2/10(0)	2	119	dml 38 (2019-01-07)
71	Kon'kov D. (training123)⁷¹⁹	2/10(0)	2	120	sel 12 (2019-07-04)
72	Shabanov R.R. (Vertel)¹¹⁴⁰	2/10(0)	2	122	sel 12 (2019-11-13)
73	Chmelyov G.A. (Grigory630)¹¹⁵²	2/10(0)	2	123	sel 40 (2020-04-18)
74	Krasavin A.A. (alexey.krasavin)⁶⁴¹	2/10(0)	2	125	sel 40 (2019-09-25)
75	Pantileenko D. (iriswind1)³⁶⁵	2/10(0)	2	134	sel 40 (2019-08-09)
76	Poroshkova (vvvvvloi)⁹⁵³	2/10(0)	2	148	sel 40 (2020-05-06)
77	Verdiyev A. (Nuklinoid)⁷¹⁰	2/10(0)	2	172	sel 12 (2019-07-05)
78	Grebla A.I. (A1412)⁵⁵⁸	2/10(0)	2	177	sel 12 (2019-06-29)
79	Gribkov (Lenarino)⁵⁶⁷	2/10(0)	2	192	sel 40 (2019-09-01)
80	Legoshin V.V. (Vasilij Legoshin)⁹⁷⁰	2/10(0)	2	195	sel 40 (2020-05-22)
81	Smolyar P. (smolyar)¹⁰⁵⁷	2/10(0)	2	219	sel 40 (2020-05-06)
82	Grishunin M.F. (MikhailFG)⁸⁶	2/10(0)	2	229	sel 40 (2019-01-25)
83	Mikhed (am37)¹¹⁶⁴	2/10(0)	2	239	sel 40 (2020-03-09)
84	Shmigirev A.E. (Shmigirev)³⁸⁹	2/10(0)	2	260	sel 40 (2019-07-02)
85	Tyannikov V.P. (TVP)³¹³	2/10(0)	2	266	sel 40 (2020-02-14)
86	Sazonov A.V. (AlexSZ)⁷²³	2/10(0)	2	314	sel 40 (2019-09-20)
87	Arzamasov M.A. (Michael.Arz)⁴⁵²	2/10(0)	2	327	sel 12 (2019-09-05)
88	Bogdanov K.A. (KAB956)³⁷⁶	2/10(0)	2	432	sel 40 (2019-07-13)
89	Nikolaj (Bulocka_c_izumom)⁴³²	2/10(0)	2	434	sel 40 (2020-03-09)
90	Igumnov (HermanI)⁴⁶⁹	2/10(0)	2	469	sel 40 (2020-01-03)
91	alex (alex882)³⁹⁹	2/10(0)	2	495	sel 12 (2019-07-26)
92	Vestnikov D.A. (letsstudybegin)³²¹	2/10(0)	2	576	sel 12 (2019-07-10)
93	Egorov A.Yu. (Anthe)⁷¹⁸	2/10(0)	2	601	sel 40 (2019-12-24)
94	Nechaeva O.A. (Nechaeva Olga)²⁹²	2/10(0)	2	620	sel 40 (2020-01-31)
95	Selezen' A.N. (Artny)³²⁴	2/10(0)	2	667	sel 12 (2019-07-01)
96	Stepanov A.S. (Stepanov Aleksej)⁷⁶⁴	2/10(0)	2	711	sel 40 (2019-07-29)
97	Zemlyanukhin N.V. (NIKITA123321)⁷⁶²	2/10(0)	2	732	sel 40 (2019-07-16)
98	Lazareva E. (lea_22)³⁴⁹	2/10(0)	2	770	sel 12 (2019-07-18)
99	Golubeva (Sutie)⁷³⁶	2/10(0)	2	772	sel 40 (2019-09-19)
100	Vasyaeva N.A. (V_Natali)³⁰⁷	2/10(0)	2	779	sel 40 (2019-12-12)

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