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

SQL exercises

July 05, 12:10 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
254	1	45	190498	1	Baser	2011-09-02	8.8
211	2	14	173915	1	Baser	2014-06-30	9.8
223	2	12	171592	0	Baser	2016-11-12	9.9
234	3	4	142013	1	Kursist	2020-02-28	9.5
217	4	9	113664	4	pegoopik	2015-08-28	9.2
151	3	35	90967	4	anddros	2008-12-30	9.0
159	3	17	88573	1	anddros	2012-07-22	8.2
251	4	68	74852	3	paparome	2006-10-01	8.0
214	4	11	73899	0	pegoopik	2015-05-30	10.0
175	3	30	71785	1	pegoopik	2011-04-28	8.5
190	4	16	70717	1	vlksm	2012-03-17	8.8
220	3	6	70495	1	pegoopik	2016-12-17	10.0
255	4	14	68481	3	vlksm	2012-02-14	9.8
252	2	34	67434	3	Ozzy	2009-06-14	8.3
101	4	216	66697	16	pegoopik	2010-11-20	9.4
178	3	23	64295	1	Baser	2011-08-13	9.1
102	4	183	64195	7	GriGrim	2011-07-16	9.5
304	2	24	63065	0	aks_nsk	2016-02-05	9.3
172	3	22	59687	0	Ozzy	2011-03-11	9.8
96	3	413	58462	81	anddros	2008-11-22	8.8
191	3	14	58423	0	qwrqwr	2012-06-08	9.5
143	5	46	57178	14	inkerman	2007-10-07	8.8
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
258	3	25	49820	0	Baser	2014-09-19	7.6
216	3	11	49497	1	pegoopik	2015-05-15	9.9
187	3	25	47200	1	=Maxim=	2011-12-31	8.8
169	3	30	45744	0	Valdaj	2010-09-02	8.4
138	5	146	44372	33	Cyrilus	2005-12-09	9.1
93	3	166	42786	5	qwrqwr	2014-03-14	9.3
173	1	52	40030	2	Ozzy	2011-01-13	9.3
253	3	30	39967	7	$erges	2008-05-17	8.9
165	2	30	38654	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	37829	1	Fomichev	2013-12-07	7.0
120	4	104	37589	2	pegoopik	2014-02-14	9.0
99	3	196	35317	8	Dmitrij Grinkevich	2012-05-05	8.2
188	3	17	34385	1	qwrqwr	2012-02-04	9.8
148	2	66	32566	7	vlksm	2008-09-06	9.3
57	1	132	31425	19	Kursist	2020-10-10	8.4
174	1	56	29937	0	qwrqwr	2011-02-25	9.3
157	3	24	28226	2	anddros	2009-06-05	9.6
212	3	16	27716	0	Baser	2014-10-14	8.9
92	2	556	27545	9	paparome	2006-07-26	8.5
49	2	1179	26758	22	anddros	2009-06-05	7.9
224	3	10	26714	0	selber	2017-04-14	9.4
163	3	19	26664	0	Ozzy	2010-01-08	9.6
160	3	27	24342	0	Ozzy	2009-08-07	9.6
154	4	26	23397	3	anddros	2009-03-18	9.9
186	1	37	23340	0	Ozzy	2011-12-30	9.2
149	3	35	21580	2	$erges	2008-09-08	9.2
161	3	22	21439	3	Ozzy	2009-11-06	9.3
119	5	107	20891	5	Velmont	2014-03-07	9.6
153	3	37	20110	4	Ozzy	2009-02-14	9.5
116	5	246	19494	20	$erges	2008-12-13	9.4
126	2	185	18693	12	$erges	2008-09-07	8.6
150	4	37	18162	4	@Nikotin	2008-11-09	8.6
147	4	27	18075	2	$erges	2010-08-06	9.7
171	3	19	17760	1	Ozzy	2010-12-05	9.3
122	1	135	16023	2	Dmitrij Grinkevich	2012-09-14	6.0
184	2	25	15219	2	Baser	2011-11-26	8.8
176	3	31	14985	0	qwrqwr	2011-05-20	9.5
156	2	51	14817	3	anddros	2009-04-17	9.1
19	1	1992	13539	23	Serge I	2004-06-23	7.5
145	3	71	11864	1	pvv	2008-01-07	8.6
62	2	704	11588	10	Dmitrij Grinkevich	2012-02-11	8.0
193	2	22	11370	0	Baser	2012-07-06	8.3
164	2	37	11169	1	anddros	2010-04-26	9.7
106	3	282	10702	6	vlksm	2008-11-27	8.8
100	4	250	10440	10	qwrqwr	2010-04-27	9.4
215	2	23	10440	0	pegoopik	2015-03-06	9.3
206	4	14	9282	0	Baser	2013-11-23	9.1
230	2	7	9143	1	pegoopik	2018-07-27	9.8
210	2	15	9016	0	_dimon_	2014-02-07	10.0
183	2	30	9016	2	GriGrim	2011-11-12	9.1
218	4	12	8905	2	al29	2016-04-04	9.6
257	4	17	8812	1	pegoopik	2012-02-20	9.4
208	3	14	8424	0	pegoopik	2013-12-20	8.8
115	2	79	8174	1	selber	2016-05-28	9.1
225	2	10	7677	0	pegoopik	2017-07-15	9.8
139	2	126	7537	2	Snowbear	2006-09-09	8.3
155	3	26	7331	3	vlksm	2009-04-17	9.9
222	2	13	6850	1	pegoopik	2016-12-23	9.8
200	3	19	6776	0	qwrqwr	2013-10-05	9.3
144	4	46	6638	4	pvv	2008-01-01	7.3
141	4	80	6558	10	vlksm	2006-10-29	9.0
137	4	191	6428	25	Cyrilus	2005-03-06	9.2
152	3	47	6401	4	vlksm	2009-01-05	9.7
180	3	32	6342	0	qwrqwr	2011-09-16	9.6
77	2	304	6212	32	selber	2015-07-10	8.7
229	3	6	5490	1	al29	2018-03-23	9.6
198	2	23	5228	0	Angellore	2013-09-13	9.4
227	3	9	5136	1	mcrain	2017-12-08	7.0
179	3	17	4926	0	pegoopik	2011-09-17	9.2
231	3	5	4923	0	mcrain	2018-08-24	10.0
123	3	245	4724	38	Ozzy	2009-08-22	9.0
45	2	442	4707	16	dumkan	2016-04-03	8.0
140	2	82	4518	2	_Bkmz_	2010-01-30	8.9
168	2	43	4507	2	qwrqwr	2010-08-27	9.5
213	2	26	4445	0	qwrqwr	2014-10-17	9.6
121	3	406	4424	4	ZrenBy	2004-02-26	7.8
133	2	91	4324	0	pickman	2011-07-01	8.2
132	3	110	4322	4	risp	2010-01-25	7.7
26	1	1480	3993	23	VIG	2003-12-22	7.7
182	3	23	3548	0	Baser	2011-10-29	8.1
158	3	38	3320	0	Ozzy	2010-04-09	8.9
233	1	14	3277	1	pegoopik	2019-03-08	10.0
135	3	65	3181	1	qwrqwr	2013-04-19	8.9
232	3	5	3110	0	al29	2018-08-20	10.0
65	3	706	3058	47	Ozzy	2010-01-29	7.7
131	2	92	2994	1	GriGrim	2012-05-25	8.6
72	4	1017	2891	149	paparome	2005-12-03	9.2
107	2	405	2864	9	Fiolent	2004-02-26	8.1
167	3	24	2850	0	qwrqwr	2011-01-18	9.9
207	3	16	2850	0	pegoopik	2016-01-15	10.0
98	4	583	2770	44	ZrenBy	2003-09-01	8.2
221	2	17	2706	1	Baser	2016-11-05	8.9
87	4	635	2653	89	Roman Golubin	2006-07-14	9.3
256	1	39	2460	1	anddros	2013-11-08	8.9
89	3	412	2414	32	_Bkmz_	2008-06-21	7.9
185	1	43	2363	3	=Maxim=	2011-11-25	7.9
302	0	37	2328	0	pegoopik	2012-07-27	7.6
136	3	114	2306	5	Ozzy	2011-05-12	7.5
146	3	61	2262	3	paparome	2008-01-22	9.7
235	2	6	2201	0	Kursist	2021-07-10	9.3
209	1	33	2078	1	Baser	2013-12-30	8.0
228	1	18	2048	1	qwrqwr	2018-01-12	10.0
219	2	16	1991	0	pegoopik	2016-04-08	9.9
199	3	20	1981	0	Baser	2013-08-17	8.4
204	1	34	1878	1	anddros	2013-11-19	8.7
166	1	60	1865	2	anddros	2010-07-26	9.5
195	3	26	1775	0	Dmitrij Grinkevich	2013-04-20	9.1
71	3	538	1700	22	anddros	2009-12-26	8.3
76	3	451	1637	16	silver	2010-01-23	8.8
196	3	25	1616	0	qwrqwr	2013-05-17	9.4
125	3	371	1609	3	dimzv	2004-02-29	8.7
58	3	612	1540	12	qwrqwr	2013-03-01	8.1
127	2	60	1441	2	GriGrim	2014-12-21	7.9
130	2	119	1434	0	anddros	2010-05-22	8.9
85	3	365	1434	19	Ozzy	2009-10-10	8.5
20	2	1490	1412	31	VIG	2003-09-01	8.0
142	2	115	1377	1	paparome	2007-03-24	9.0
84	3	415	1308	16	Ozzy	2009-12-26	8.4
134	3	175	1242	4	pvv	2008-01-22	8.5
226	3	9	1236	2	pegoopik	2017-10-14	9.2
111	2	454	1232	3	Fiolent	2005-01-19	8.3
105	2	140	1206	0	Baser	2013-09-20	8.6
197	1	43	1185	0	pegoopik	2013-06-10	8.8
64	3	593	1169	49	qwrqwr	2010-05-13	8.0
162	2	59	1167	0	Ozzy	2009-12-26	9.3
108	3	281	1166	5	crescent	2011-03-23	8.9
110	3	432	1166	11	Snowbear	2006-03-14	8.9
203	1	40	1137	1	=Maxim=	2013-10-05	9.4
307	2	19	1120	0	Baser	2017-06-29	8.5
80	2	340	1098	10	qwrqwr	2011-10-21	8.9
177	1	53	1004	0	pegoopik	2011-07-17	8.5
170	2	54	982	1	qwrqwr	2010-10-24	9.0
124	2	377	970	3	DimaN	2004-02-26	8.3
66	3	661	954	54	anddros	2009-12-26	8.4
32	1	1362	921	7	Roman Golubin	2005-12-13	7.5
260	2	52	913	0	qwrqwr	2012-02-03	7.7
202	2	29	911	0	qwrqwr	2013-11-01	9.1
114	1	452	901	4	Serge I	2003-12-24	8.4
40	1	297	899	11	Serge I	2018-09-07	7.0
201	2	38	806	0	Baser	2013-09-21	8.7
129	2	274	769	7	DimaN	2004-03-01	7.5
305	1	25	732	0	Baser	2017-01-06	9.0
23	3	1550	690	124	Palkin	2007-03-29	8.4
43	2	522	689	5	qwrqwr	2015-04-24	8.4
91	2	224	672	1	smog	2012-05-26	9.1
192	2	48	608	0	Baser	2012-03-03	9.2
103	1	142	599	1	Baser	2013-10-05	7.4
82	3	386	590	11	_Virt_	2010-04-27	8.2
118	2	428	560	1	Fiolent	2004-01-05	8.2
75	2	396	559	4	qwrqwr	2011-07-22	7.5
67	2	574	556	17	Ozzy	2010-04-27	8.3
68	3	285	537	24	pegoopik	2014-08-01	8.1
47	3	948	518	15	qwrqwr	2010-11-20	8.1
60	3	2056	515	120	Serge I	2005-03-05	7.8
54	2	1338	507	45	Ozzy	2008-09-06	8.1
37	3	762	500	25	qwrqwr	2013-02-22	8.0
41	3	1116	488	18	qwrqwr	2010-04-26	8.1
79	1	966	485	14	Serge I	2003-06-05	7.7
69	2	166	462	7	Gosha	2017-12-15	9.0
35	3	575	421	13	Baser	2015-09-18	8.7
262	2	12	405	0	selber	2019-06-21	6.5
86	2	347	390	0	Ozzy	2010-03-05	8.6
109	2	494	385	1	VIG	2003-12-23	8.0
78	2	416	358	4	_ORA_	2010-04-27	7.5
51	1	557	358	15	Fiolent	2004-06-23	8.2
59	2	909	327	6	VIG	2003-12-22	8.3
63	1	1327	324	5	VIG	2003-06-05	7.6
73	1	456	322	3	Ruslan1707	2010-11-02	7.4
38	2	1031	319	25	ZrenBy	2003-09-01	7.5
34	2	1172	316	27	qwrqwr	2010-09-24	7.9
90	1	236	316	0	Dmitrij Grinkevich	2012-03-03	7.9
236	1	9	292	0	Baser	2021-07-24	9.5
44	2	735	289	7	Serge I	2011-11-25	7.9
61	2	958	286	5	risp	2009-12-26	8.4
12	1	407	280	46	Serge I	2019-04-12	7.2
25	2	1227	275	29	DimaN	2004-06-22	7.1
97	1	368	271	3	dimzv	2004-03-01	7.6
74	2	666	268	8	vlksm	2008-06-21	8.3
46	2	1193	257	126	Serge I	2009-08-12	6.8
104	1	141	247	1	pegoopik	2013-07-19	8.4
113	1	136	227	0	smog	2013-03-29	8.5
33	2	1255	225	28	DimaN	2004-03-01	7.6
128	1	229	224	4	inkerman	2007-09-14	8.4
55	2	557	219	7	VIG	2005-06-26	7.6
6	2	2015	212	80	Serge I	2005-05-07	7.9
17	2	1646	208	23	VIG	2003-04-29	8.1
95	1	93	208	2	qwrqwr	2017-12-01	9.4
83	2	534	173	5	lepton	2006-09-29	8.5
18	1	1628	173	8	ZrenBy	2003-09-01	7.6
70	1	670	169	3	Serge I	2009-04-17	7.9
9	2	1395	168	30	vasia armor	2010-05-21	8.0
50	1	520	155	7	mslava	2003-12-23	7.2
94	2	254	153	0	pickman	2011-04-27	8.3
303	2	11	153	0	MikhailYakovlev535	2020-06-23	6.3
30	1	1750	138	3	Serge I	2003-08-28	7.9
81	2	595	136	12	$erges	2008-05-10	8.3
112	1	39	131	2	Gosha	2020-06-03	9.0
56	1	1049	126	3	Fiolent	2004-06-22	7.9
52	1	496	125	3	Serge I	2015-01-10	8.6
36	3	1029	122	22	risp	2011-05-06	8.0
16	2	904	116	60	qwrqwr	2014-07-18	7.5
42	1	1613	110	14	Serge I	2003-06-05	7.7
21	1	1202	105	9	paparome	2006-03-14	8.0
13	1	1726	99	21	ZrenBy	2003-09-01	7.5
39	2	1375	98	24	Serge I	2003-08-28	7.5
53	1	1462	98	25	DimaN	2004-03-01	7.6
28	1	1211	94	10	ZrenBy	2003-09-01	7.5
14	1	2445	88	37	Serge I	2003-04-08	7.5
24	2	1617	86	6	Aaz	2004-02-26	6.9
29	2	1075	82	41	GiBis	2011-09-17	7.6
306	1	6	73	0	Baser	2022-04-29	7.4
238	2	2	68	0	Baser	2022-05-13	5.0
31	1	1044	64	6	Fiolent	2004-06-22	7.8
117	1	430	57	0	Fiolent	2003-12-26	7.6
8	2	1481	50	94	Serge I	2008-06-21	7.6
7	1	172	48	63	Baser	2021-02-27	8.2
48	1	1154	43	6	Serge I	2009-06-22	7.4
11	1	1902	42	15	ZrenBy	2003-09-01	7.5
22	1	1616	40	12	ZrenBy	2003-09-01	7.3
27	1	1276	36	8	Fiolent	2004-02-26	7.3
10	1	728	25	47	Serge I	2017-01-20	8.0
15	1	1209	24	8	Dmitrij Grinkevich	2012-04-21	7.6
88	2	20	16	1	Serge I	2021-10-15	9.1
301	0	43	7	0	pegoopik	2012-03-23	8.9
308	1	5	5	0	Baser	2022-05-06	6.8
237	3	1		1	Baser	2022-05-13

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