Rating of second-stage exercises (average) on SQL Exercises

SQL exercises

September 22, 09:17 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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Rating of second-stage exercises (average)

Rating of 2nd-stage exercises (median)

No - exercise number; Bonus - level of difficulty;
Solved - number of visitors, who have solved this exercise;
Time(min) - the average time (calculated over TOP 20) that has been spent for solution in minutes;
noOK - number of visitors, who have not solved this exercise yet.
(Click on a cell to see list of these);
Rank - average score on a result of voting.

No	Bonus	Solved	Time(min)	noOK	Author	Date	Rank
237	3	3	239814	1	Baser	2022-05-13	9.5
254	1	45	190491	1	Baser	2011-09-02	8.8
211	2	14	173915	1	Baser	2014-06-30	9.8
223	2	13	157657	0	Baser	2016-11-12	9.9
217	4	9	113664	4	pegoopik	2015-08-28	9.2
234	3	5	95156	1	Kursist	2020-02-28	9.7
151	3	35	90967	4	anddros	2008-12-30	9.0
159	3	17	88573	1	anddros	2012-07-22	8.2
190	4	17	74530	1	vlksm	2012-03-17	8.9
214	4	11	73899	0	pegoopik	2015-05-30	10.0
251	4	68	70257	3	paparome	2006-10-01	8.0
255	4	14	68481	4	vlksm	2012-02-14	9.8
252	2	35	67434	3	Ozzy	2009-06-14	8.4
178	3	23	67318	1	Baser	2011-08-13	9.1
101	4	220	66513	16	pegoopik	2010-11-20	9.4
40	1	333	64581	11	Serge I	2018-09-07	7.1
102	4	186	64201	8	GriGrim	2011-07-16	9.5
143	5	46	59698	14	inkerman	2007-10-07	8.8
172	3	22	59687	0	Ozzy	2011-03-11	9.8
304	2	24	58879	0	aks_nsk	2016-02-05	9.3
220	3	7	58774	1	pegoopik	2016-12-17	10.0
96	3	421	58455	81	anddros	2008-11-22	8.8
191	3	14	58423	0	qwrqwr	2012-06-08	9.5
175	3	30	58250	1	pegoopik	2011-04-28	8.5
189	4	15	52225	0	Baser	2012-02-05	8.6
181	4	15	51625	1	Ozzy	2011-10-08	9.7
259	4	22	50526	2	anddros	2009-08-24	9.5
187	3	26	49596	0	=Maxim=	2011-12-31	8.8
216	3	11	49497	1	pegoopik	2015-05-15	9.9
148	2	67	49300	7	vlksm	2008-09-06	9.3
258	3	25	46006	0	Baser	2014-09-19	7.6
138	5	146	44295	33	Cyrilus	2005-12-09	9.1
93	3	176	42869	5	qwrqwr	2014-03-14	9.3
253	3	30	39967	7	$erges	2008-05-17	8.9
173	1	52	39895	3	Ozzy	2011-01-13	9.3
120	4	107	39776	2	pegoopik	2014-02-14	9.0
165	2	30	38796	3	vlksm	2010-03-18	9.9
205	2	16	38349	0	qwrqwr	2013-11-22	8.9
194	4	15	37950	1	pegoopik	2012-07-13	10.0
261	1	35	37826	1	Fomichev	2013-12-07	7.0
188	3	17	34385	1	qwrqwr	2012-02-04	9.8
99	3	203	33463	8	Dmitrij Grinkevich	2012-05-05	8.2
152	3	47	32145	4	vlksm	2009-01-05	9.7
174	1	56	29935	0	qwrqwr	2011-02-25	9.3
219	2	17	29828	0	pegoopik	2016-04-08	9.9
212	3	16	28385	0	Baser	2014-10-14	8.9
157	3	24	28226	2	anddros	2009-06-05	9.6
92	2	566	27534	9	paparome	2006-07-26	8.6
49	2	1212	26757	22	anddros	2009-06-05	7.9
163	3	19	26664	0	Ozzy	2010-01-08	9.6
233	1	16	24576	1	pegoopik	2019-03-08	10.0
224	3	11	24375	0	selber	2017-04-14	9.5
160	3	27	24342	0	Ozzy	2009-08-07	9.6
57	2	177	23844	16	Kursist	2020-10-10	8.3
154	4	26	23397	3	anddros	2009-03-18	9.9
186	1	37	23332	0	Ozzy	2011-12-30	9.2
119	5	110	21998	4	Velmont	2014-03-07	9.6
149	3	35	21580	3	$erges	2008-09-08	9.2
153	3	37	21549	4	Ozzy	2009-02-14	9.5
161	3	22	21439	3	Ozzy	2009-11-06	9.3
116	5	248	19323	20	$erges	2008-12-13	9.4
126	2	186	18699	12	$erges	2008-09-07	8.6
150	4	37	18162	5	@Nikotin	2008-11-09	8.6
147	4	28	18075	2	$erges	2010-08-06	9.7
171	3	19	17760	1	Ozzy	2010-12-05	9.3
176	3	31	16018	0	qwrqwr	2011-05-20	9.5
200	3	19	15209	0	qwrqwr	2013-10-05	9.3
184	2	26	15179	1	Baser	2011-11-26	8.9
156	2	51	15162	3	anddros	2009-04-17	9.1
122	1	138	15140	2	Dmitrij Grinkevich	2012-09-14	5.9
146	3	62	14934	3	paparome	2008-01-22	9.7
19	1	2033	13538	23	Serge I	2004-06-23	7.5
145	3	71	11710	1	pvv	2008-01-07	8.6
164	2	37	11673	1	anddros	2010-04-26	9.7
193	2	22	11363	0	Baser	2012-07-06	8.3
62	2	739	10980	10	Dmitrij Grinkevich	2012-02-11	8.0
106	3	285	10696	6	vlksm	2008-11-27	8.8
100	4	255	10437	11	qwrqwr	2010-04-27	9.4
215	2	23	10161	0	pegoopik	2015-03-06	9.3
168	2	43	9629	2	qwrqwr	2010-08-27	9.5
206	4	14	9282	0	Baser	2013-11-23	9.1
210	2	15	9016	0	_dimon_	2014-02-07	10.0
183	2	30	9005	2	GriGrim	2011-11-12	9.1
257	4	17	8812	1	pegoopik	2012-02-20	9.4
230	2	8	8606	1	pegoopik	2018-07-27	9.8
218	4	13	8380	2	al29	2016-04-04	9.6
115	2	83	7699	1	selber	2016-05-28	9.1
139	2	126	7537	2	Snowbear	2006-09-09	8.3
155	3	27	7331	2	vlksm	2009-04-17	9.9
225	2	11	6846	0	pegoopik	2017-07-15	9.9
144	4	46	6638	4	pvv	2008-01-01	7.3
222	2	14	6419	1	pegoopik	2016-12-23	9.8
137	4	191	6301	25	Cyrilus	2005-03-06	9.2
141	4	80	6285	10	vlksm	2006-10-29	9.0
77	2	316	6213	33	selber	2015-07-10	8.7
262	2	14	5553	0	selber	2019-06-21	7.0
221	2	17	5048	1	Baser	2016-11-05	8.9
179	3	17	4926	0	pegoopik	2011-09-17	9.2
198	2	23	4815	1	Angellore	2013-09-13	9.4
45	2	477	4709	15	dumkan	2016-04-03	8.0
123	3	249	4682	38	Ozzy	2009-08-22	9.0
229	3	7	4615	1	al29	2018-03-23	9.7
227	3	10	4590	1	mcrain	2017-12-08	7.3
180	3	32	4579	0	qwrqwr	2011-09-16	9.6
208	3	14	4572	0	pegoopik	2013-12-20	8.8
213	2	26	4508	0	qwrqwr	2014-10-17	9.6
182	3	23	4468	0	Baser	2011-10-29	8.1
140	2	82	4465	2	_Bkmz_	2010-01-30	8.9
133	2	92	4315	0	pickman	2011-07-01	8.2
132	3	111	4274	4	risp	2010-01-25	7.7
121	3	409	4274	4	ZrenBy	2004-02-26	7.7
231	3	6	4196	0	mcrain	2018-08-24	10.0
26	1	1516	3980	26	VIG	2003-12-22	7.7
127	2	61	3702	2	GriGrim	2014-12-21	7.9
158	3	38	3421	0	Ozzy	2010-04-09	8.9
135	3	66	3206	1	qwrqwr	2013-04-19	8.9
65	3	732	3041	50	Ozzy	2010-01-29	7.8
72	4	1028	2940	150	paparome	2005-12-03	9.2
131	2	93	2931	1	GriGrim	2012-05-25	8.6
107	2	408	2864	9	Fiolent	2004-02-26	8.1
167	3	24	2850	0	qwrqwr	2011-01-18	9.9
185	1	44	2715	3	=Maxim=	2011-11-25	7.9
87	4	645	2696	89	Roman Golubin	2006-07-14	9.3
232	3	6	2570	0	al29	2018-08-20	10.0
98	4	591	2563	44	ZrenBy	2003-09-01	8.2
207	3	17	2464	0	pegoopik	2016-01-15	10.0
89	3	422	2412	31	_Bkmz_	2008-06-21	7.9
32	3	29	2402	5	blr_Oliver	2023-07-08	9.6
136	3	114	2361	6	Ozzy	2011-05-12	7.5
302	0	37	2325	0	pegoopik	2012-07-27	7.6
256	1	39	2312	1	anddros	2013-11-08	8.9
228	1	19	2312	1	qwrqwr	2018-01-12	10.0
169	3	32	2190	0	Valdaj	2010-09-02	8.5
196	3	25	2131	0	qwrqwr	2013-05-17	9.4
162	2	59	2035	0	Ozzy	2009-12-26	9.3
209	1	33	2003	1	Baser	2013-12-30	8.0
199	3	20	1940	0	Baser	2013-08-17	8.4
204	1	34	1874	1	anddros	2013-11-19	8.7
195	3	26	1760	0	Dmitrij Grinkevich	2013-04-20	9.1
76	3	463	1674	16	silver	2010-01-23	8.8
71	3	552	1662	22	anddros	2009-12-26	8.4
125	3	375	1609	3	dimzv	2004-02-29	8.7
166	1	61	1593	1	anddros	2010-07-26	9.5
58	3	647	1540	13	qwrqwr	2013-03-01	8.2
130	2	120	1427	0	anddros	2010-05-22	8.9
142	2	115	1422	1	paparome	2007-03-24	9.0
20	2	1533	1414	31	VIG	2003-09-01	8.0
85	3	375	1374	20	Ozzy	2009-10-10	8.6
84	3	426	1333	16	Ozzy	2009-12-26	8.4
134	3	176	1251	4	pvv	2008-01-22	8.5
202	2	29	1240	0	qwrqwr	2013-11-01	9.1
111	2	457	1226	3	Fiolent	2005-01-19	8.3
197	1	43	1199	0	pegoopik	2013-06-10	8.8
108	3	283	1168	5	crescent	2011-03-23	8.9
110	3	435	1164	11	Snowbear	2006-03-14	8.9
64	3	623	1162	49	qwrqwr	2010-05-13	8.1
105	2	143	1137	0	Baser	2013-09-20	8.6
203	1	40	1134	1	=Maxim=	2013-10-05	9.4
235	2	7	1124	0	Kursist	2021-07-10	9.5
226	3	10	1120	2	pegoopik	2017-10-14	9.3
307	2	19	1032	0	Baser	2017-06-29	8.5
80	2	350	1029	10	qwrqwr	2011-10-21	9.0
177	1	53	998	0	pegoopik	2011-07-17	8.5
170	2	55	985	1	qwrqwr	2010-10-24	9.0
66	3	685	984	54	anddros	2009-12-26	8.5
124	2	381	970	3	DimaN	2004-02-26	8.3
114	1	455	901	4	Serge I	2003-12-24	8.4
260	2	52	888	0	qwrqwr	2012-02-03	7.7
201	2	38	807	0	Baser	2013-09-21	8.7
129	2	275	773	7	DimaN	2004-03-01	7.5
43	2	556	689	3	qwrqwr	2015-04-24	8.4
23	3	1590	687	125	Palkin	2007-03-29	8.4
305	1	25	684	0	Baser	2017-01-06	9.0
91	2	233	671	1	smog	2012-05-26	9.1
192	2	48	610	0	Baser	2012-03-03	9.2
103	1	144	594	2	Baser	2013-10-05	7.5
82	3	397	572	11	_Virt_	2010-04-27	8.2
118	2	430	565	1	Fiolent	2004-01-05	8.2
75	2	408	558	4	qwrqwr	2011-07-22	7.5
67	2	596	557	17	Ozzy	2010-04-27	8.3
47	3	981	517	14	qwrqwr	2010-11-20	8.1
54	2	1371	503	45	Ozzy	2008-09-06	8.2
41	3	1148	487	18	qwrqwr	2010-04-26	8.1
68	3	305	483	26	pegoopik	2014-08-01	8.1
79	1	976	483	14	Serge I	2003-06-05	7.8
60	3	2090	462	120	Serge I	2005-03-05	7.9
69	2	182	454	8	Gosha	2017-12-15	9.1
35	3	611	421	13	Baser	2015-09-18	8.7
37	3	794	421	25	qwrqwr	2013-02-22	8.0
86	2	358	396	0	Ozzy	2010-03-05	8.7
109	2	497	385	1	VIG	2003-12-23	8.0
51	1	591	361	14	Fiolent	2004-06-23	8.3
78	2	426	358	5	_ORA_	2010-04-27	7.5
59	2	944	323	6	VIG	2003-12-22	8.3
63	1	1362	320	5	VIG	2003-06-05	7.6
73	1	468	318	3	Ruslan1707	2010-11-02	7.5
38	2	1063	315	25	ZrenBy	2003-09-01	7.5
34	2	1208	305	28	qwrqwr	2010-09-24	7.9
90	1	245	305	1	Dmitrij Grinkevich	2012-03-03	8.0
44	2	767	289	8	Serge I	2011-11-25	7.9
61	2	993	282	5	risp	2009-12-26	8.5
97	1	377	279	3	dimzv	2004-03-01	7.6
25	2	1267	275	30	DimaN	2004-06-22	7.1
12	1	466	269	49	Serge I	2019-04-12	7.2
74	2	678	265	8	vlksm	2008-06-21	8.3
104	1	144	251	0	pegoopik	2013-07-19	8.3
46	2	1225	249	127	Serge I	2009-08-12	6.8
5	1	54	231	26	Serge I	2023-06-18	8.5
33	2	1292	227	27	DimaN	2004-03-01	7.6
128	1	230	225	4	inkerman	2007-09-14	8.4
236	1	10	224	0	Baser	2021-07-24	9.6
113	1	139	218	0	smog	2013-03-29	8.6
55	2	593	216	6	VIG	2005-06-26	7.7
6	2	2148	211	127	Serge I	2005-05-07	8.0
17	2	1689	208	25	VIG	2003-04-29	8.2
95	1	103	196	3	qwrqwr	2017-12-01	9.4
29	2	1113	194	39	GiBis	2011-09-17	7.5
83	2	546	177	5	lepton	2006-09-29	8.5
18	1	1670	168	10	ZrenBy	2003-09-01	7.7
9	2	1462	165	31	vasia armor	2010-05-21	8.0
70	1	684	164	3	Serge I	2009-04-17	7.9
50	1	565	156	18	mslava	2003-12-23	7.3
94	2	264	150	0	pickman	2011-04-27	8.3
30	1	1787	138	3	Serge I	2003-08-28	7.9
81	2	605	135	12	$erges	2008-05-10	8.3
56	1	1082	129	3	Fiolent	2004-06-22	8.0
52	1	530	123	3	Serge I	2015-01-10	8.6
36	3	1062	123	23	risp	2011-05-06	8.0
16	2	952	116	60	qwrqwr	2014-07-18	7.5
112	1	46	115	2	Gosha	2020-06-03	8.9
42	1	1644	107	14	Serge I	2003-06-05	7.7
21	1	1244	106	9	paparome	2006-03-14	8.1
39	2	1406	103	24	Serge I	2003-08-28	7.5
13	1	1777	98	21	ZrenBy	2003-09-01	7.5
53	1	1495	97	25	DimaN	2004-03-01	7.6
238	2	5	93	0	Baser	2022-05-13	8.0
28	1	1247	92	11	ZrenBy	2003-09-01	7.5
14	1	2494	89	37	Serge I	2003-04-08	7.6
24	2	1658	86	6	Aaz	2004-02-26	7.0
31	1	1080	64	6	Fiolent	2004-06-22	7.9
306	1	9	62	0	Baser	2022-04-29	7.4
117	1	432	58	0	Fiolent	2003-12-26	7.6
7	1	274	42	107	Baser	2021-02-27	7.9
8	2	1556	42	95	Serge I	2008-06-21	7.7
22	1	1658	42	12	ZrenBy	2003-09-01	7.3
11	1	1963	41	15	ZrenBy	2003-09-01	7.5
48	1	1187	41	6	Serge I	2009-06-22	7.4
27	1	1313	36	8	Fiolent	2004-02-26	7.4
10	1	794	23	49	Serge I	2017-01-20	8.0
15	1	1258	23	8	Dmitrij Grinkevich	2012-04-21	7.6
88	2	42	14	1	Serge I	2021-10-15	9.2
301	0	44	7	0	pegoopik	2012-03-23	8.7

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