SQL exercises

October 24, 09:26 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

(39DML, 40DML, 41DML, 42DML, 43DML, 12, 112, 233, 234, 262)

No	person	exs	score	minutes	last_ex
1	Chernov D.V. (Kursist)¹	10/10(2)	18	1181	dml 43 (2020-06-08)
2	Koptel'tsev V. (selber)³¹	10/10(2)	18	8184	sel 112 (2020-06-23)
3	Doschenko V.N. (mcrain)²	9/10(0)	17	3314	dml 43 (2020-06-24)
4	Kreslavskij O.M. (Arcan)⁵	9/10(0)	15	136	sel 112 (2020-09-01)
5	Sigankov V.I. (vasilyvanc)³⁰	9/10(0)	15	835	sel 112 (2020-07-06)
6	Varenikov D.M. (Dmitriy Varenikov)¹⁸	9/10(0)	15	17826	sel 262 (2020-07-25)
7	Shkarednyj I.N. (Gosha)³⁴	8/10(1)	13	55503	dml 43 (2020-07-16)
8	Filippkin D.V. (_dimon_)¹²	7/10(0)	13	418	dml 43 (2020-06-08)
9	Krasovskij E.A. (pegoopik)³	7/10(1)	13	2411	dml 42 (2019-12-09)
10	Karasyova N.V. (vlksm)⁹	7/10(0)	13	2656	sel 262 (2020-04-25)
11	Komarov A.N. (Shveda Saulya)¹²⁹	7/10(0)	12	2020	sel 112 (2020-07-28)
12	Dubinskij A.V. (_velial)⁸	7/10(0)	12	2905	sel 112 (2020-08-27)
13	Yakovlev M.V. (MikhailYakovlev535)¹³⁰	6/10(0)	11	1107	dml 43 (2020-07-08)
14	Milenkov (wqer)⁹⁵	6/10(0)	11	2044	dml 43 (2020-07-12)
15	Samarin A. (not.yet.sql.master)¹²⁸	5/10(0)	10	391	dml 42 (2020-05-09)
16	Fedevych V.I. (labuch_fedev)³³	5/10(0)	6	378	sel 262 (2020-03-19)
17	Timofeeva E.V. (Umrikhina)²³	4/10(0)	6	412	dml 41 (2019-11-27)
18	Buldenkov D.A. (eXeQuThor)¹³²	4/10(0)	6	506	dml 41 (2019-10-28)
19	Fokin A. (Vizitor )⁴¹	4/10(0)	6	1229	dml 41 (2019-08-16)
20	Dmitriev A. (Havr)¹⁴⁶	4/10(0)	6	1414	dml 41 (2019-07-30)
21	Vasilevskaya E.A. (kattiks)¹³⁸	4/10(0)	6	5106	sel 12 (2019-08-09)
22	Williams B. (BW)³⁶	4/10(0)	6	121443	dml 41 (2020-02-20)
23	Kostomarov A.V. (al29)⁴	4/10(0)	5	1560	sel 112 (2020-08-10)
24	Boiko D. (Angellore)⁶	4/10(0)	4	232	sel 12 (2019-05-23)
25	Kurochkin P.A. (qwrqwr)¹⁰	4/10(0)	4	1330	sel 112 (2020-06-06)
26	Pusev D.V. (Pusev_Denis)²⁷	4/10(0)	4	2215	sel 112 (2020-06-06)
27	Latyntsev N.G. (aks_nsk)⁵⁰	3/10(0)	3	24	sel 12 (2019-05-11)
28	Kopylov A.V. (alegzey)²⁸²	3/10(0)	3	38	dml 40 (2019-09-02)
29	Balbekov A.G. (NtFire)²⁸⁶	3/10(0)	3	43	dml 40 (2019-09-03)
30	Petrov Y. (YuriPetrov)³⁵	3/10(0)	3	57	sel 12 (2019-07-04)
31	bitsadze K.R. (furie)²³⁷	3/10(0)	3	537	dml 40 (2020-10-01)
32	Zhulanov S.G. (borey.mdb)¹⁴⁵	3/10(0)	3	851	sel 12 (2019-07-20)
33	Osin V. (anyman1979)¹⁴⁷	2/10(0)	2	12	dml 40 (2019-11-03)
34	Demin D. (demind74)¹³⁵	2/10(0)	2	19	dml 40 (2019-07-01)
35	Pyatiletov A. (MontaG)⁵⁵	2/10(0)	2	20	sel 12 (2019-06-30)
36	Panfilov A. (alexey.p4nfilov)¹³³	2/10(0)	2	40	dml 40 (2019-06-06)
37	Pavlov A.V. (Anton)⁵⁶	2/10(0)	2	45	dml 40 (2019-06-03)
38	Tarshin S.N. (tsn)¹⁵⁶	2/10(0)	2	46	sel 112 (2020-07-30)
39	Yartsev Yu. (Yury66)²⁰⁹	2/10(0)	2	792	sel 112 (2020-08-27)
40	Novikov (PNA921)²²³	2/10(0)	2	1501	sel 112 (2020-09-19)
41	Verdiyev A. (Nuklinoid)⁷²³	1/10(0)	1	5	sel 12 (2019-07-05)
42	Maksimov A.A. (AntonMaksimov77778888)⁴⁸²³	1/10(0)	1	6	sel 12 (2020-07-09)
43	Belyaev (andruwa)¹⁰⁰⁵	1/10(0)	1	8	sel 12 (2020-05-12)
44	alex (alex882)⁴⁰³	1/10(0)	1	8	sel 12 (2019-07-26)
45	Petropavlov (sqlstuding)²⁵¹²	1/10(0)	1	9	sel 12 (2020-03-22)
46	Kuz'mitskij Ya.O. (YaroslavYaroslav)¹⁰⁴⁴	1/10(0)	1	10	sel 12 (2020-06-19)
47	Pronina (Nnet)⁵⁵¹	1/10(0)	1	11	sel 12 (2019-07-10)
48	Ovsyankin V.S. (Kazaam)¹⁴⁴	1/10(0)	1	11	sel 12 (2020-08-23)
49	Gulyaev S. (sergey.g)³²⁶	1/10(0)	1	12	sel 12 (2019-07-02)
50	Medyakov A.V. (Sky34)¹³⁴⁸	1/10(0)	1	12	sel 12 (2020-05-02)
51	Neboronov M.M. (maksoooun)⁵⁸²	1/10(0)	1	13	sel 12 (2019-07-06)
52	Vanteev A.G. (vanteevart)³⁷⁸	1/10(0)	1	16	sel 12 (2019-08-30)
53	Lyubomudrov R.G. (PB-77)⁶⁹⁶	1/10(0)	1	16	sel 12 (2019-10-31)
54	Kisselev D. (ryan9)⁶⁰⁵	1/10(0)	1	16	sel 12 (2019-06-28)
55	Khamidov D. (damirr)⁴²⁸	1/10(0)	1	17	sel 12 (2020-05-12)
56	Trukhina (anntrukhina)³¹⁸⁸	1/10(0)	1	17	sel 12 (2020-05-22)
57	Gorshelev M.O. (eximka)³⁵⁶	1/10(0)	1	18	sel 12 (2020-09-23)
58	Samorodov F.A. (Spetsialist)¹⁶⁵⁸	1/10(0)	1	19	sel 12 (2020-05-06)
59	Koletvinova A. (Poganka)³¹⁷	1/10(0)	1	19	sel 12 (2019-07-01)
60	Kharitskij D.K. (Rognak)⁷⁴⁵	1/10(0)	1	19	sel 12 (2020-05-13)
61	Fomichev A.V. (Fomichev)¹⁷¹	1/10(0)	1	20	sel 12 (2019-10-22)
62	Efimova V. (captainX)⁴⁹⁶	1/10(0)	1	21	sel 12 (2019-11-05)
63	Smirnov S.V. (Wild_Sery)¹³⁶³	1/10(0)	1	22	sel 12 (2019-07-02)
64	Kuanchaleev A.B. (Avangard)²⁵¹	1/10(0)	1	22	sel 12 (2020-05-19)
65	Dedyukiev K. (ogir)¹⁰⁷⁰	1/10(0)	1	22	sel 12 (2020-04-29)
66	Mityurin V. (mitvol)¹⁶¹	1/10(0)	1	23	sel 12 (2020-05-27)
67	Azanov E.D. (Eugene_Azanov)¹⁰¹³	1/10(0)	1	24	sel 12 (2020-05-14)
68	Borisenkov D.V. (xuser)⁹⁸	1/10(0)	1	25	sel 12 (2019-11-22)
69	Egorova E.A. (Egorova_Elena)⁴⁸²⁸	1/10(0)	1	25	sel 12 (2020-01-27)
70	Shalavin D.E. (Juster81)²⁵⁸	1/10(0)	1	25	sel 12 (2019-09-25)
71	Kartashov M.S. (mimi789456)⁷²²	1/10(0)	1	26	sel 12 (2020-08-10)
72	Iskhokov F.S. (Faridun89)¹⁹⁶⁶	1/10(0)	1	26	sel 12 (2020-04-23)
73	Valeev R.D. (ValRus)¹²⁵¹	1/10(0)	1	27	sel 12 (2020-02-10)
74	Sablina A. (VitalAnastasia)¹⁰⁰⁴	1/10(0)	1	27	sel 12 (2020-04-23)
75	Sokolov A.V. (Falcon06)⁶⁹⁴	1/10(0)	1	28	sel 12 (2020-04-03)
76	Zajtsev R.A. (PrideGoldFish)⁹⁴⁴	1/10(0)	1	28	sel 12 (2019-07-11)
77	Aronov O. (aronov.oleg)¹³⁹	1/10(0)	1	29	sel 12 (2019-12-19)
78	Burdenko Ya. (Bsl)¹¹⁵²	1/10(0)	1	30	sel 12 (2019-07-01)
79	Rebrin A. (Hydra86)⁷⁷³	1/10(0)	1	30	sel 12 (2019-06-30)
80	Ivanova S. (moonfish)¹¹⁸³	1/10(0)	1	30	sel 12 (2019-09-14)
81	Pantileenko D. (iriswind1)³⁷⁰	1/10(0)	1	31	sel 12 (2019-08-09)
82	Kvochkin V. (ASEVlad)¹¹⁵³	1/10(0)	1	31	sel 12 (2020-01-10)
83	Mamichev S.G. (SergeyMamichev)¹²⁷⁷	1/10(0)	1	31	sel 12 (2020-04-26)
84	LOl K.C. (HOAJG)³⁵⁶⁹	1/10(0)	1	34	sel 12 (2020-08-05)
85	Gireiko E. (Zubryonok)²²⁹	1/10(0)	1	34	sel 12 (2019-09-05)
86	Russkikh A. (mandarinchik)⁴¹²	1/10(0)	1	34	sel 12 (2020-01-25)
87	Kudravtsev V.S. (Vitaliy_Kudravtsev)⁹⁵³	1/10(0)	1	38	sel 12 (2019-11-08)
88	Gajchuk A.S. (asgaychuk)³⁷¹	1/10(0)	1	39	sel 12 (2019-08-19)
89	Petrova K.O. (Lanelia)⁷³⁹	1/10(0)	1	41	sel 12 (2020-05-17)
90	Chechulin (Sinde)¹³³⁰	1/10(0)	1	41	sel 12 (2020-02-18)
91	Murtazaliev M.G. (Magmur)⁶⁰⁶	1/10(0)	1	41	sel 12 (2020-05-04)
92	Gur'yanov D.A. (Dmitro94)²¹⁴⁴	1/10(0)	1	43	sel 12 (2020-08-02)
93	Nazhestkin I.A. (gausseuler60)⁴⁷⁴⁷	1/10(0)	1	44	sel 12 (2019-07-04)
94	Yolokhov V.Yu. (Vladimir Elokhov)³⁷⁴⁴	1/10(0)	1	46	sel 12 (2019-10-17)
95	Slepnev S.V. (SergSlep)¹³⁶¹	1/10(0)	1	46	sel 12 (2020-09-08)
96	Ostrovskij A.A. (aleost)³³³	1/10(0)	1	47	sel 12 (2019-07-04)
97	Lazareva E. (lea_22)³⁴⁹	1/10(0)	1	50	sel 12 (2019-07-18)
98	Alborov K.R. (albor)⁵⁸¹	1/10(0)	1	50	sel 12 (2019-07-03)
99	Savin A.Yu. (mirovingin)²⁵⁷	1/10(0)	1	51	sel 12 (2019-08-12)
100	Poroshkova (vvvvvloi)⁵³¹	1/10(0)	1	51	sel 12 (2020-04-02)

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