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

SQL exercises

October 18, 08:34 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
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	0	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	211	66697	16	pegoopik	2010-11-20	9.4
178	3	23	64295	1	Baser	2011-08-13	9.1
102	4	179	64195	6	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	409	58462	81	anddros	2008-11-22	8.8
191	3	14	58423	0	qwrqwr	2012-06-08	9.5
143	5	45	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	0	=Maxim=	2011-12-31	8.8
169	3	30	45744	0	Valdaj	2010-09-02	8.4
138	5	145	44372	33	Cyrilus	2005-12-09	9.1
93	3	162	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	101	37589	2	pegoopik	2014-02-14	9.0
57	1	94	35340	12	Kursist	2020-10-10	8.7
99	3	192	35317	8	Dmitrij Grinkevich	2012-05-05	8.2
188	3	17	34385	1	qwrqwr	2012-02-04	9.8
148	2	65	32566	7	vlksm	2008-09-06	9.3
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	552	27545	9	paparome	2006-07-26	8.5
49	2	1143	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	25	23397	3	anddros	2009-03-18	9.9
186	1	37	23340	0	Ozzy	2011-12-30	9.2
149	3	34	21580	2	$erges	2008-09-08	9.2
161	3	21	21439	4	Ozzy	2009-11-06	9.2
119	5	104	20891	4	Velmont	2014-03-07	9.6
153	3	36	20110	4	Ozzy	2009-02-14	9.5
116	5	242	19494	20	$erges	2008-12-13	9.4
126	2	182	18693	11	$erges	2008-09-07	8.6
150	4	36	18162	4	@Nikotin	2008-11-09	8.5
147	4	26	18075	2	$erges	2010-08-06	9.7
171	3	19	17760	1	Ozzy	2010-12-05	9.3
122	1	131	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	1946	13539	24	Serge I	2004-06-23	7.5
151	3	33	13131	5	anddros	2008-12-30	8.9
145	3	69	11864	1	pvv	2008-01-07	8.6
62	2	677	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	279	10702	6	vlksm	2008-11-27	8.8
100	4	245	10440	11	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	75	8174	1	selber	2016-05-28	9.1
225	2	10	7677	0	pegoopik	2017-07-15	9.8
139	2	125	7537	2	Snowbear	2006-09-09	8.3
155	3	26	7331	2	vlksm	2009-04-17	9.9
222	2	13	6850	1	pegoopik	2016-12-23	9.8
144	4	45	6638	4	pvv	2008-01-01	7.2
141	4	79	6558	9	vlksm	2006-10-29	9.0
200	3	18	6532	0	qwrqwr	2013-10-05	9.3
137	4	190	6428	24	Cyrilus	2005-03-06	9.2
152	3	46	6401	4	vlksm	2009-01-05	9.7
180	3	32	6342	0	qwrqwr	2011-09-16	9.6
77	2	296	6212	32	selber	2015-07-10	8.8
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	241	4724	38	Ozzy	2009-08-22	9.0
45	2	403	4707	17	dumkan	2016-04-03	8.0
140	2	81	4518	2	_Bkmz_	2010-01-30	8.9
168	2	42	4507	2	qwrqwr	2010-08-27	9.5
213	2	26	4445	0	qwrqwr	2014-10-17	9.6
121	3	402	4424	5	ZrenBy	2004-02-26	7.8
133	2	89	4324	0	pickman	2011-07-01	8.2
132	3	108	4322	4	risp	2010-01-25	7.6
26	1	1434	3993	25	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	63	3181	1	qwrqwr	2013-04-19	8.9
232	3	5	3110	0	al29	2018-08-20	10.0
65	3	688	3058	49	Ozzy	2010-01-29	7.7
131	2	88	2994	1	GriGrim	2012-05-25	8.5
72	4	1007	2891	150	paparome	2005-12-03	9.2
107	2	402	2864	9	Fiolent	2004-02-26	8.2
167	3	24	2850	0	qwrqwr	2011-01-18	9.9
207	3	16	2850	0	pegoopik	2016-01-15	10.0
98	4	579	2770	44	ZrenBy	2003-09-01	8.2
221	2	16	2706	1	Baser	2016-11-05	8.9
87	4	629	2653	90	Roman Golubin	2006-07-14	9.3
256	1	39	2460	1	anddros	2013-11-08	8.9
89	3	407	2414	31	_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	112	2306	5	Ozzy	2011-05-12	7.4
146	3	60	2262	3	paparome	2008-01-22	9.7
235	2	5	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	529	1700	20	anddros	2009-12-26	8.4
76	3	443	1637	15	silver	2010-01-23	8.8
196	3	25	1616	0	qwrqwr	2013-05-17	9.4
125	3	366	1609	3	dimzv	2004-02-29	8.7
58	3	584	1540	10	qwrqwr	2013-03-01	8.2
127	2	56	1441	2	GriGrim	2014-12-21	7.7
130	2	116	1434	0	anddros	2010-05-22	8.8
85	3	360	1434	19	Ozzy	2009-10-10	8.5
20	2	1441	1412	35	VIG	2003-09-01	8.0
142	2	114	1377	1	paparome	2007-03-24	9.0
84	3	410	1308	16	Ozzy	2009-12-26	8.4
134	3	173	1242	4	pvv	2008-01-22	8.6
226	3	9	1236	2	pegoopik	2017-10-14	9.2
111	2	451	1232	3	Fiolent	2005-01-19	8.3
105	2	137	1206	0	Baser	2013-09-20	8.6
197	1	43	1185	0	pegoopik	2013-06-10	8.8
64	3	576	1169	47	qwrqwr	2010-05-13	8.0
162	2	59	1167	0	Ozzy	2009-12-26	9.3
88	3	276	1166	5	crescent	2011-03-23	8.9
110	3	429	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	334	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	373	970	3	DimaN	2004-02-26	8.3
66	3	646	954	54	anddros	2009-12-26	8.5
32	1	1316	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	448	901	4	Serge I	2003-12-24	8.4
40	1	255	899	13	Serge I	2018-09-07	7.1
201	2	38	806	0	Baser	2013-09-21	8.7
129	2	271	769	7	DimaN	2004-03-01	7.5
305	1	25	732	0	Baser	2017-01-06	9.0
23	3	1506	690	122	Palkin	2007-03-29	8.4
43	2	488	689	4	qwrqwr	2015-04-24	8.5
91	2	219	672	1	smog	2012-05-26	9.1
192	2	48	608	0	Baser	2012-03-03	9.2
103	1	138	599	1	Baser	2013-10-05	7.4
82	3	381	590	11	_Virt_	2010-04-27	8.3
118	2	424	560	1	Fiolent	2004-01-05	8.2
75	2	388	559	4	qwrqwr	2011-07-22	7.5
67	2	561	556	16	Ozzy	2010-04-27	8.3
68	3	273	537	24	pegoopik	2014-08-01	8.1
47	3	912	518	15	qwrqwr	2010-11-20	8.1
60	3	2029	515	119	Serge I	2005-03-05	7.8
54	2	1304	507	46	Ozzy	2008-09-06	8.2
37	3	724	500	25	qwrqwr	2013-02-22	8.0
41	3	1083	488	18	qwrqwr	2010-04-26	8.1
79	1	959	485	14	Serge I	2003-06-05	7.7
69	2	152	462	7	Gosha	2017-12-15	9.0
35	3	534	421	12	Baser	2015-09-18	8.8
262	2	11	405	0	selber	2019-06-21	6.5
50	1	793	399	4	mslava	2003-12-22	8.3
86	2	342	390	0	Ozzy	2010-03-05	8.6
109	2	491	385	1	VIG	2003-12-23	8.0
51	1	522	358	14	Fiolent	2004-06-23	8.1
78	2	409	358	3	_ORA_	2010-04-27	7.5
59	2	881	327	5	VIG	2003-12-22	8.3
63	1	1300	324	5	VIG	2003-06-05	7.6
73	1	447	322	3	Ruslan1707	2010-11-02	7.4
38	2	991	319	25	ZrenBy	2003-09-01	7.6
34	2	1132	316	25	qwrqwr	2010-09-24	7.9
90	1	231	316	0	Dmitrij Grinkevich	2012-03-03	7.8
44	2	700	289	8	Serge I	2011-11-25	7.9
61	2	931	286	5	risp	2009-12-26	8.4
12	1	342	280	44	Serge I	2019-04-12	7.1
25	2	1183	275	29	DimaN	2004-06-22	7.0
97	1	364	271	3	dimzv	2004-03-01	7.7
74	2	658	268	8	vlksm	2008-06-21	8.3
46	2	1158	257	126	Serge I	2009-08-12	6.8
104	1	138	247	0	pegoopik	2013-07-19	8.4
113	1	132	227	0	smog	2013-03-29	8.5
33	2	1212	225	26	DimaN	2004-03-01	7.6
128	1	225	224	4	inkerman	2007-09-14	8.3
55	2	515	219	7	VIG	2005-06-26	7.6
6	2	1922	212	44	Serge I	2005-05-07	7.9
17	2	1596	208	24	VIG	2003-04-29	8.1
95	1	88	208	2	qwrqwr	2017-12-01	9.3
236	1	6	175	0	Baser	2021-07-24	9.5
83	2	530	173	5	lepton	2006-09-29	8.5
18	1	1581	173	7	ZrenBy	2003-09-01	7.7
70	1	658	169	3	Serge I	2009-04-17	7.9
9	2	1341	168	30	vasia armor	2010-05-21	7.9
108	1	494	155	0	mslava	2003-12-23	7.4
94	2	250	153	0	pickman	2011-04-27	8.3
303	2	11	153	0	MikhailYakovlev535	2020-06-23	6.3
30	1	1707	138	3	Serge I	2003-08-28	7.9
81	2	589	136	12	$erges	2008-05-10	8.3
112	1	31	136	2	Gosha	2020-06-03	9.0
56	1	1015	126	3	Fiolent	2004-06-22	7.9
52	1	461	125	3	Serge I	2015-01-10	8.6
36	3	991	122	21	risp	2011-05-06	8.0
16	2	856	116	60	qwrqwr	2014-07-18	7.4
42	1	1581	110	14	Serge I	2003-06-05	7.7
21	1	1155	105	10	paparome	2006-03-14	8.0
13	1	1678	99	21	ZrenBy	2003-09-01	7.5
39	2	1339	98	21	Serge I	2003-08-28	7.5
53	1	1429	98	25	DimaN	2004-03-01	7.6
28	1	1165	94	11	ZrenBy	2003-09-01	7.5
14	1	2398	88	36	Serge I	2003-04-08	7.5
24	2	1574	86	6	Aaz	2004-02-26	6.9
29	2	1030	82	40	GiBis	2011-09-17	7.5
31	1	998	64	7	Fiolent	2004-06-22	7.8
117	1	426	57	0	Fiolent	2003-12-26	7.6
7	1	69	54	31	Baser	2021-02-27	8.5
8	2	1421	50	93	Serge I	2008-06-21	7.6
48	1	1118	43	6	Serge I	2009-06-22	7.4
11	1	1852	42	15	ZrenBy	2003-09-01	7.5
22	1	1570	40	12	ZrenBy	2003-09-01	7.3
27	1	1230	36	8	Fiolent	2004-02-26	7.3
10	1	669	25	46	Serge I	2017-01-20	7.9
15	1	1160	24	8	Dmitrij Grinkevich	2012-04-21	7.5
306	2	4	16	0	Serge I	2021-10-15	10.0
301	0	43	7	0	pegoopik	2012-03-23	8.9

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