SQL exercises

May 18, 03:37 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

(41DML, 42DML, 43DML, 44DML, 12, 57, 112, 234, 235, 262)

No	person	exs	score	minutes	last_ex
1	Chernov D.V. (Kursist)¹	10/10(3)	18	1304	sel 235 (2021-02-27)
2	Koptel'tsev V. (selber)³¹	10/10(2)	18	1736	sel 235 (2021-02-27)
3	Kreslavskij O.M. (Arcan)⁵	9/10(0)	15	131	sel 235 (2021-02-27)
4	Sigankov V.I. (vasilyvanc)³⁰	9/10(0)	15	815	sel 235 (2021-02-27)
5	Karasyova N.V. (vlksm)⁹	9/10(0)	15	1918	dml 44 (2021-05-05)
6	Varenikov D.M. (Dmitriy Varenikov)¹⁹	9/10(0)	15	16989	sel 235 (2021-03-24)
7	Filippkin D.V. (_dimon_)¹¹	8/10(0)	14	368	dml 44 (2021-02-17)
8	Doschenko V.N. (mcrain)³	6/10(0)	14	4807	dml 43 (2020-06-24)
9	Kurochkin P.A. (qwrqwr)¹⁰	8/10(0)	13	98434	sel 235 (2021-03-11)
10	Gireiko E. (Zubryonok)¹⁴⁰	7/10(0)	12	53	dml 44 (2021-04-19)
11	Litvinov V.V. (NewsMan)¹⁴¹	7/10(0)	12	981	dml 44 (2021-04-04)
12	Komarov A.N. (Shveda Saulya)⁷⁰	7/10(0)	12	2054	dml 44 (2021-01-29)
13	Milenkov (wqer)⁹⁶	7/10(0)	12	2116	dml 44 (2021-03-08)
14	Matveeva D.D. (darya_matveeva)¹⁴³	7/10(0)	12	2528	dml 44 (2021-04-08)
15	Dubinskij A.V. (_velial)⁸	7/10(0)	12	2907	sel 57 (2021-02-23)
16	Konotopov S. (kinkou)¹⁴²	7/10(0)	12	5251	sel 112 (2021-02-15)
17	Shkarednyj I.N. (Gosha)³⁵	7/10(1)	12	64655	dml 44 (2021-01-25)
18	Slepnev S.V. (SergSlep)¹⁸⁸	6/10(0)	11	5343	dml 44 (2021-01-26)
19	Krasovskij E.A. (pegoopik)⁴	4/10(0)	10	3609	dml 42 (2019-12-09)
20	Kostomarov A.V. (al29)²	6/10(0)	9	46414	sel 234 (2021-04-17)
21	Yakovlev M.V. (MikhailYakovlev535)¹³⁰	4/10(0)	9	1644	dml 43 (2020-07-08)
22	Samarin A. (not.yet.sql.master)¹²⁹	3/10(0)	8	646	dml 42 (2020-05-09)
23	Vasilevskaya E.A. (kattiks)¹³⁷	3/10(0)	5	7280	sel 57 (2021-04-18)
24	Petrov Y. (YuriPetrov)³⁴	3/10(0)	5	334168	dml 41 (2021-05-17)
25	Timofeeva E.V. (Umrikhina)²⁴	2/10(0)	4	790	dml 41 (2019-11-27)
26	Buldenkov D.A. (eXeQuThor)¹³²	2/10(0)	4	996	dml 41 (2019-10-28)
27	Fokin A. (Vizitor )⁴¹	2/10(0)	4	2436	dml 41 (2019-08-16)
28	Dmitriev A. (Havr)¹⁵⁰	2/10(0)	4	2481	dml 41 (2019-07-30)
29	Williams B. (BW)³⁶	2/10(0)	4	170734	dml 41 (2020-02-20)
30	Chebykin D.N. (GriGrim)³⁷	3/10(0)	3	42	sel 112 (2020-12-19)
31	Zajtsev V.S. (Sleeping)²³	3/10(0)	3	86	sel 12 (2020-11-04)
32	Akol'zin M.S. (maksimok2991)¹⁹⁵	3/10(0)	3	483	sel 112 (2021-03-14)
33	Nikolaj (Bulocka_c_izumom)¹⁷⁸	3/10(0)	3	586	sel 112 (2020-12-27)
34	Novikov (PNA921)¹⁹³	3/10(0)	3	1551	sel 57 (2021-01-15)
35	Komov K.N. (zigmund1)²¹⁷	3/10(0)	3	7277	sel 112 (2021-03-21)
36	Yartsev Yu. (Yury66)²⁰¹	3/10(0)	3	55205	sel 57 (2021-04-02)
37	Fedevych V.I. (labuch_fedev)³³	2/10(0)	3	233	sel 262 (2020-03-19)
38	Tarshin S.N. (tsn)¹⁶⁰	2/10(0)	2	46	sel 112 (2020-07-30)
39	Aronov O. (aronov.oleg)¹³⁸	2/10(0)	2	48	sel 57 (2020-12-09)
40	Sergeev (post_prog)⁵²⁷	2/10(0)	2	84	sel 57 (2021-01-01)
41	Zhdanov K.V. (scuder)⁴⁷⁰	2/10(0)	2	85	sel 57 (2021-04-03)
42	Zelentsov I.A. (Overcomzi)⁷⁴⁵	2/10(0)	2	129	sel 57 (2021-02-10)
43	Prokof'eva I.V. (IrinaP)⁷⁴⁴	2/10(0)	2	208	sel 57 (2021-01-12)
44	Vestnikov D.A. (letsstudybegin)²⁷³	2/10(0)	2	236	sel 57 (2021-01-17)
45	Petrov D.B. (GiBis)²⁷⁴	2/10(0)	2	264	sel 57 (2020-12-04)
46	Markov (yaroslavv)⁷⁴⁶	2/10(0)	2	299	sel 57 (2020-12-14)
47	Krasavin A.A. (alexey.krasavin)⁶²⁹	2/10(0)	2	367	sel 57 (2021-02-17)
48	Markin N. (Qmaro)⁶⁰⁷	2/10(0)	2	504	sel 57 (2021-02-08)
49	Kuydinov D. (sh4rk717)⁶⁴⁰	2/10(0)	2	629	sel 57 (2021-03-21)
50	Vasil'ev A.A. (TruthFinder)⁴⁵²	2/10(0)	2	653	sel 57 (2020-12-08)
51	Kasumov M.M. (MaratKasumov)⁴⁷⁴	2/10(0)	2	812	sel 57 (2021-01-04)
52	Svitochev I.O. (Svitochev)³³⁹	2/10(0)	2	815	sel 57 (2020-12-08)
53	Lyaschenko S.N. (pimen78)⁶⁰⁸	2/10(0)	2	817	sel 57 (2021-04-13)
54	Drozdov A.S. (ELVISNEVERDIES1)⁶³³	2/10(0)	2	832	sel 57 (2020-12-21)
55	Kostyushko Yu.V. (kostushko)⁴¹⁷	2/10(0)	2	842	sel 57 (2021-04-27)
56	Tatsyuk O.A. (archi_98)⁶¹⁹	2/10(0)	2	850	sel 57 (2021-02-18)
57	Popov S.V. (PopovSV)⁷⁴³	2/10(0)	2	864	sel 57 (2021-04-16)
58	Gubarev L.I. (Livan)⁴⁴⁰	2/10(0)	2	878	sel 57 (2021-02-15)
59	gls G.G. (gls52)⁴⁰³	2/10(0)	2	913	sel 57 (2020-12-11)
60	Marchenkov (Decoe)⁷⁰⁴	2/10(0)	2	1184	sel 57 (2021-03-22)
61	Cherpak V.E. (OakTree)⁵⁸⁹	2/10(0)	2	1268	sel 57 (2020-11-19)
62	Trofimov (learn_jack)³³⁰	2/10(0)	2	1316	sel 57 (2020-11-17)
63	Ikramov R. (ARNET)⁵³⁶	2/10(0)	2	1409	sel 57 (2021-01-09)
64	Yanin M.Yu. (Mikhkha)⁷²¹	2/10(0)	2	1451	sel 57 (2021-04-05)
65	SmirnOFF (select0r)⁷⁶⁰	2/10(0)	2	1776	sel 57 (2021-04-01)
66	Rodionov S. (oldos)³²⁹	2/10(0)	2	1998	sel 57 (2021-02-27)
67	Ladanov N.V. (XAKEP_BBC)⁷⁵⁸	2/10(0)	2	2009	sel 57 (2020-11-28)
68	Lazareva E. (lea_22)³⁵¹	2/10(0)	2	2087	sel 57 (2020-11-19)
69	Mikhailov S. (curiouser)³²⁵	2/10(0)	2	3049	sel 57 (2020-11-18)
70	ol O. (svinokiller)⁴²⁹	2/10(0)	2	3149	sel 57 (2021-05-06)
71	Pravdyuk R.M. (Pro100geniy)⁷⁵⁰	2/10(0)	2	3150	sel 57 (2020-11-15)
72	Menyajlo S.S. (Kagerorus)⁷⁶²	2/10(0)	2	3588	sel 57 (2021-01-30)
73	Smol'nikova M.A. (fora)⁵³⁰	2/10(0)	2	4060	sel 57 (2020-12-01)
74	Vlasov (HandKot_)¹⁷³	2/10(0)	2	4664	sel 57 (2021-02-19)
75	Kokunina M.V. (Liss-miss)⁷⁴⁹	2/10(0)	2	5013	sel 57 (2021-04-12)
76	Veselov A.N. (almw)⁵⁰⁰	2/10(0)	2	5148	sel 57 (2021-01-21)
77	Novozhilov A. (BertokMo)⁶⁷¹	2/10(0)	2	5326	sel 57 (2021-03-16)
78	Russkikh A. (mandarinchik)³⁹⁰	2/10(0)	2	5614	sel 57 (2021-03-12)
79	Koletvinova A. (Poganka)³²⁰	2/10(0)	2	9601	sel 57 (2021-03-14)
80	Savin A.Yu. (mirovingin)²⁵⁸	2/10(0)	2	12155	sel 57 (2021-04-02)
81	Antunez Garcia F. (antunez)⁷⁹⁵	2/10(0)	2	27267	sel 57 (2021-02-18)
82	Shustov V.V. (shustovvlad)⁶⁵⁴	2/10(0)	2	61234	sel 57 (2020-11-30)
83	Zhdamorev (zda)²¹³	2/10(0)	2	165371	sel 57 (2021-01-29)
84	Bezhaev A.Yu. (Baser)⁷	1/10(1)	1		sel 235 (2021-02-27)
85	Abramov M.V. (AbramovMaksim2021)²⁹²⁹	1/10(0)	1	4	sel 12 (2021-04-07)
86	Verdiyev A. (Nuklinoid)⁶⁸⁶	1/10(0)	1	5	sel 12 (2019-07-05)
87	Maksimov A.A. (AntonMaksimov77778888)⁴⁹⁴⁸	1/10(0)	1	6	sel 12 (2020-07-09)
88	Belyaev (andruwa)¹⁰²⁹	1/10(0)	1	8	sel 12 (2020-05-12)
89	alex (alex882)⁴¹⁰	1/10(0)	1	8	sel 12 (2019-07-26)
90	Petropavlov (sqlstuding)²⁵⁷³	1/10(0)	1	9	sel 12 (2020-03-22)
91	Boiko D. (Angellore)⁶	1/10(0)	1	9	sel 12 (2019-05-23)
92	Kuz'mitskij Ya.O. (YaroslavYaroslav)¹⁰⁶⁸	1/10(0)	1	10	sel 12 (2020-06-19)
93	Pronina (Nnet)⁵⁶³	1/10(0)	1	11	sel 12 (2019-07-10)
94	Ovsyankin V.S. (Kazaam)¹⁴⁸	1/10(0)	1	11	sel 12 (2020-08-23)
95	Gulyaev S. (sergey.g)³³⁴	1/10(0)	1	12	sel 12 (2019-07-02)
96	Medyakov A.V. (Sky34)¹³⁷⁷	1/10(0)	1	12	sel 12 (2020-05-02)
97	Neboronov M.M. (maksoooun)⁵⁹⁴	1/10(0)	1	13	sel 12 (2019-07-06)
98	Zubkov A.A. (AlekseyBr)¹¹⁹⁵	1/10(0)	1	15	sel 12 (2021-03-26)
99	Kisselev D. (ryan9)⁶²⁰	1/10(0)	1	16	sel 12 (2019-06-28)
100	Vanteev A.G. (vanteevart)³⁸³	1/10(0)	1	16	sel 12 (2019-08-30)

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