SQL exercises

August 10, 06:08 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

(25DML, 28DML, 29DML, 43DML, 48DML, 51DML, 53DML, 54DML, 237, 238)

No	person	exs	score	minutes	last_ex
1	Chernov D.V. (Kursist)¹	9/10(0)	16	58	dml 54 (2022-07-17)
2	Koptel'tsev V. (selber)²⁸	9/10(5)	16	341	sel 238 (2022-07-21)
3	Suprun D. (TimonSP)⁷³	8/10(0)	14	196	dml 54 (2022-07-21)
4	Varenikov D.M. (Dmitriy Varenikov)¹⁸	8/10(0)	14	297	dml 54 (2022-07-20)
5	Filippkin D.V. (_dimon_)¹⁰	8/10(0)	14	878	dml 54 (2022-08-01)
6	Komarov A.N. (Shveda Saulya)⁶²	8/10(0)	14	1549	dml 54 (2022-07-17)
7	gls (gls52)¹⁵³	8/10(0)	14	2316	dml 54 (2022-07-25)
8	Shkarednyj I.N. (Gosha)³⁵	8/10(0)	14	4849	dml 54 (2022-07-15)
9	Filipas I.M. (Axocopan)¹³²	7/10(0)	13	59	dml 53 (2022-02-08)
10	Il'in A.N. (ani42)¹³⁰	7/10(0)	13	104	dml 53 (2022-01-29)
11	Doschenko V.N. (mcrain)²	7/10(0)	13	545	dml 53 (2022-04-25)
12	Gmar' D.V. (dimervvsu)⁴¹	7/10(0)	13	668	dml 53 (2022-04-19)
13	Petrov Y. (YuriPetrov)³⁴	7/10(0)	13	2010	dml 53 (2022-02-08)
14	Latyntsev N.G. (aks_nsk)⁵¹	6/10(0)	11	1950	dml 53 (2022-02-12)
15	Tsuranov E.V. (Tsuranov Eduard)³⁶⁹	6/10(0)	11	2288	dml 53 (2022-05-19)
16	Kreslavskij O.M. (Arcan)⁴	6/10(0)	10	78	dml 28 (2022-01-20)
17	Karasyova N.V. (vlksm)⁹	6/10(0)	10	620	dml 51 (2022-04-09)
18	Kurochkin P.A. (qwrqwr)¹¹	6/10(0)	10	3657	dml 28 (2022-01-20)
19	Pavlov A.V. (Anton)⁵⁷	5/10(0)	8	38	dml 51 (2022-04-05)
20	Lazareva E. (lea_22)²⁷⁸	5/10(0)	8	3763	dml 28 (2022-01-19)
21	Shishkin D. (Shinuz)¹⁶⁰	4/10(0)	6	405	dml 43 (2022-07-25)
22	Rybkina T.V. (Rybka)⁹³	4/10(0)	5	80	dml 29 (2022-02-05)
23	Fedevych V.I. (labuch_fedev)³³	4/10(0)	5	145	dml 48 (2022-01-30)
24	Mikhailov S. (curiouser)³¹¹	4/10(0)	5	3526	dml 29 (2022-03-05)
25	bitsadze K.R. (furie)²³⁸	4/10(0)	5	9145	dml 29 (2022-01-26)
26	Sigankov V.I. (vasilyvanc)³¹	3/10(0)	5	2624	dml 43 (2022-04-10)
27	Bezhaev A.Yu. (Baser)⁶	2/10(2)	5		sel 237 (2022-05-13)
28	Borzov V.V. (simulacrum)¹⁴⁹	3/10(0)	4	17	dml 29 (2022-06-28)
29	Belyakov M.Ya. (Mat_Original)³⁷³	3/10(0)	4	83	dml 29 (2022-07-19)
30	Lobashev A.G. (anewnick)⁵⁶²	3/10(0)	4	84	dml 29 (2022-02-11)
31	Kostaschuk R.M. (RaduKostashchuk)⁶²⁶	3/10(0)	4	89	dml 29 (2022-03-08)
32	Ashling (Ashling)⁴⁵⁷	3/10(0)	4	93	dml 29 (2022-04-13)
33	Sul'dina M.V. (mar91s)⁶¹⁷	3/10(0)	4	257	dml 29 (2022-02-28)
34	Gaas (_vlvl_)⁵⁹⁴	3/10(0)	4	258	dml 29 (2022-04-19)
35	Vestnikov D.A. (letsstudybegin)²⁴⁷	3/10(0)	4	321	dml 29 (2022-03-20)
36	Sopulyak S.V. (takoysebeproger)⁵⁷⁵	3/10(0)	4	471	dml 29 (2022-01-25)
37	Kadomtsev S.I. (z00mz00m1993)⁶²²	3/10(0)	4	481	dml 29 (2022-03-21)
38	Efimova V. (captainX)⁴⁵⁵	3/10(0)	4	503	dml 29 (2022-03-11)
39	Chunev N.A. (nik4un)⁴³¹	3/10(0)	4	664	dml 29 (2022-03-28)
40	Konovalov P.D. (pdkonovalov)⁶¹⁰	3/10(0)	4	731	dml 29 (2022-07-30)
41	Zakharov S. (sad_shrink)⁴⁸³	3/10(0)	4	883	dml 29 (2022-07-16)
42	Gatenadze V.Sh. (gaten1952)⁴⁹²	3/10(0)	4	940	dml 29 (2022-02-19)
43	Isaev V.Yu. (Valer4N1)⁴⁷⁷	3/10(0)	4	1032	dml 29 (2022-01-23)
44	Kuydinov D. (sh4rk717)⁵⁴⁹	3/10(0)	4	1069	dml 29 (2022-07-06)
45	Gorshelev M.O. (eximka)³⁴⁴	3/10(0)	4	1202	dml 29 (2022-08-08)
46	Aseph J. (rukia_)³⁷⁴	3/10(0)	4	1428	dml 29 (2022-06-13)
47	Khropunova S.P. (sony24)⁶¹²	3/10(0)	4	2893	dml 29 (2022-08-09)
48	Firstova A.O. (FAO)⁵⁴¹	3/10(0)	4	3007	dml 29 (2022-07-24)
49	Yartsev Yu. (Yury66)¹⁶⁸	3/10(0)	4	3644	dml 29 (2022-03-17)
50	Pegov S. (sergo_sql)⁶²⁴	3/10(0)	4	3697	dml 29 (2022-04-18)
51	Kostyushko Yu.V. (kostushko)³¹⁵	3/10(0)	4	3816	dml 29 (2022-02-04)
52	Akol'zin M.S. (maksimok2991)¹⁹³	3/10(0)	4	4186	dml 29 (2022-03-29)
53	Vinogradova S.M. (Tigra1)¹⁸⁴	3/10(0)	4	4354	dml 29 (2022-05-25)
54	Ustinova (Sforza)⁵⁹⁰	3/10(0)	4	4730	dml 29 (2022-08-07)
55	Komov K.N. (zigmund1)¹⁵⁹	3/10(0)	4	5034	dml 29 (2022-02-18)
56	ol O. (svinokiller)³⁸⁰	3/10(0)	4	7754	dml 29 (2022-03-08)
57	Savin A.Yu. (mirovingin)²¹⁶	3/10(0)	4	20149	dml 29 (2022-03-11)
58	Chebykin D.N. (GriGrim)³⁷	2/10(0)	3	31	dml 28 (2022-05-14)
59	Novozhilov A. (BertokMo)⁵⁵⁰	2/10(0)	3	3201	dml 28 (2022-02-15)
60	Rodionov S. (oldos)³⁰⁵	2/10(0)	3	5696	dml 28 (2022-05-29)
61	Kuritsyn V.N. (ValNick)²⁸¹	2/10(0)	3	9372	dml 28 (2022-06-18)
62	Veselov A.N. (almw)³⁹⁶	2/10(0)	2	1101	dml 48 (2022-01-26)
63	Tarshin S.N. (tsn)¹⁴¹	1/10(0)	1	24	dml 25 (2022-01-24)
64	Murtazaliev M.G. (Magmur)⁵⁹⁹	1/10(0)	1	41	dml 25 (2022-04-23)
65	Cherpak V.E. (OakTree)⁵⁷⁷	1/10(0)	1	2443	dml 25 (2022-08-05)
66	Rylov A.V. (LexaR2D2)⁴³⁴	1/10(0)	1	12499	dml 25 (2022-01-27)

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