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

SQL exercises

January 28, 06:36 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	34	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	212	66697	15	pegoopik	2010-11-20	9.4
178	3	23	64295	1	Baser	2011-08-13	9.1
102	4	179	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	410	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	163	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	102	37589	2	pegoopik	2014-02-14	9.0
57	1	109	35340	14	Kursist	2020-10-10	8.6
99	3	193	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	553	27545	9	paparome	2006-07-26	8.5
49	2	1155	26758	23	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	105	20891	4	Velmont	2014-03-07	9.6
153	3	36	20110	4	Ozzy	2009-02-14	9.5
116	5	243	19494	20	$erges	2008-12-13	9.4
126	2	184	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	133	16023	2	Dmitrij Grinkevich	2012-09-14	6.1
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	1962	13539	23	Serge I	2004-06-23	7.5
145	3	70	11864	1	pvv	2008-01-07	8.6
62	2	688	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	246	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	76	8174	1	selber	2016-05-28	9.2
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
200	3	19	6776	0	qwrqwr	2013-10-05	9.3
144	4	45	6638	4	pvv	2008-01-01	7.2
141	4	79	6558	9	vlksm	2006-10-29	9.0
137	4	190	6428	25	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	299	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	243	4724	38	Ozzy	2009-08-22	9.0
45	2	418	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	404	4424	4	ZrenBy	2004-02-26	7.8
133	2	90	4324	0	pickman	2011-07-01	8.2
132	3	109	4322	4	risp	2010-01-25	7.7
26	1	1451	3993	24	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	64	3181	1	qwrqwr	2013-04-19	8.9
232	3	5	3110	0	al29	2018-08-20	10.0
65	3	695	3058	48	Ozzy	2010-01-29	7.8
131	2	91	2994	1	GriGrim	2012-05-25	8.6
72	4	1011	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	580	2770	44	ZrenBy	2003-09-01	8.2
221	2	16	2706	1	Baser	2016-11-05	8.9
87	4	631	2653	90	Roman Golubin	2006-07-14	9.3
256	1	39	2460	1	anddros	2013-11-08	8.9
89	3	409	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	113	2306	5	Ozzy	2011-05-12	7.5
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	533	1700	22	anddros	2009-12-26	8.4
76	3	446	1637	15	silver	2010-01-23	8.8
196	3	25	1616	0	qwrqwr	2013-05-17	9.4
125	3	369	1609	3	dimzv	2004-02-29	8.7
58	3	596	1540	11	qwrqwr	2013-03-01	8.2
127	2	58	1441	3	GriGrim	2014-12-21	7.8
130	2	118	1434	0	anddros	2010-05-22	8.9
85	3	362	1434	19	Ozzy	2009-10-10	8.6
20	2	1457	1412	35	VIG	2003-09-01	8.0
142	2	114	1377	1	paparome	2007-03-24	9.0
84	3	412	1308	16	Ozzy	2009-12-26	8.4
134	3	174	1242	4	pvv	2008-01-22	8.5
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	583	1169	47	qwrqwr	2010-05-13	8.0
162	2	59	1167	0	Ozzy	2009-12-26	9.3
88	3	278	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	336	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	375	970	3	DimaN	2004-02-26	8.3
66	3	652	954	54	anddros	2009-12-26	8.5
32	1	1332	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	449	901	4	Serge I	2003-12-24	8.4
40	1	272	899	12	Serge I	2018-09-07	7.1
201	2	38	806	0	Baser	2013-09-21	8.7
129	2	273	769	7	DimaN	2004-03-01	7.5
305	1	25	732	0	Baser	2017-01-06	9.0
23	3	1521	690	122	Palkin	2007-03-29	8.4
43	2	502	689	5	qwrqwr	2015-04-24	8.5
91	2	220	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	383	590	11	_Virt_	2010-04-27	8.2
118	2	425	560	1	Fiolent	2004-01-05	8.2
75	2	391	559	4	qwrqwr	2011-07-22	7.5
67	2	567	556	16	Ozzy	2010-04-27	8.3
68	3	280	537	23	pegoopik	2014-08-01	8.1
47	3	926	518	16	qwrqwr	2010-11-20	8.1
60	3	2041	515	119	Serge I	2005-03-05	7.8
54	2	1316	507	45	Ozzy	2008-09-06	8.2
37	3	738	500	25	qwrqwr	2013-02-22	8.0
41	3	1097	488	18	qwrqwr	2010-04-26	8.1
79	1	961	485	14	Serge I	2003-06-05	7.7
69	2	159	462	7	Gosha	2017-12-15	9.0
35	3	549	421	13	Baser	2015-09-18	8.8
262	2	11	405	0	selber	2019-06-21	6.5
50	1	805	399	5	mslava	2003-12-22	8.3
86	2	344	390	0	Ozzy	2010-03-05	8.6
109	2	491	385	1	VIG	2003-12-23	8.0
51	1	534	358	14	Fiolent	2004-06-23	8.1
78	2	411	358	4	_ORA_	2010-04-27	7.5
59	2	893	327	6	VIG	2003-12-22	8.3
63	1	1311	324	5	VIG	2003-06-05	7.6
73	1	451	322	3	Ruslan1707	2010-11-02	7.4
38	2	1006	319	24	ZrenBy	2003-09-01	7.6
34	2	1148	316	25	qwrqwr	2010-09-24	7.9
90	1	232	316	0	Dmitrij Grinkevich	2012-03-03	7.8
44	2	714	289	8	Serge I	2011-11-25	7.9
61	2	942	286	6	risp	2009-12-26	8.4
12	1	365	280	45	Serge I	2019-04-12	7.2
25	2	1199	275	29	DimaN	2004-06-22	7.0
97	1	365	271	3	dimzv	2004-03-01	7.7
74	2	662	268	8	vlksm	2008-06-21	8.3
46	2	1172	257	126	Serge I	2009-08-12	6.8
104	1	138	247	0	pegoopik	2013-07-19	8.4
113	1	133	227	0	smog	2013-03-29	8.5
33	2	1228	225	26	DimaN	2004-03-01	7.6
128	1	227	224	4	inkerman	2007-09-14	8.4
55	2	531	219	6	VIG	2005-06-26	7.6
6	2	1954	212	48	Serge I	2005-05-07	7.9
17	2	1611	208	24	VIG	2003-04-29	8.1
95	1	89	208	2	qwrqwr	2017-12-01	9.3
83	2	531	173	5	lepton	2006-09-29	8.5
18	1	1597	173	7	ZrenBy	2003-09-01	7.7
70	1	665	169	3	Serge I	2009-04-17	7.9
9	2	1364	168	30	vasia armor	2010-05-21	8.0
108	1	494	155	0	mslava	2003-12-23	7.4
94	2	251	153	0	pickman	2011-04-27	8.3
303	2	11	153	0	MikhailYakovlev535	2020-06-23	6.3
30	1	1723	138	3	Serge I	2003-08-28	7.9
81	2	591	136	12	$erges	2008-05-10	8.3
112	1	33	136	2	Gosha	2020-06-03	9.1
236	1	7	136	0	Baser	2021-07-24	9.4
56	1	1028	126	3	Fiolent	2004-06-22	7.9
52	1	473	125	3	Serge I	2015-01-10	8.7
36	3	1005	122	21	risp	2011-05-06	8.0
16	2	872	116	61	qwrqwr	2014-07-18	7.4
42	1	1595	110	14	Serge I	2003-06-05	7.7
21	1	1171	105	10	paparome	2006-03-14	8.0
13	1	1697	99	21	ZrenBy	2003-09-01	7.5
39	2	1354	98	21	Serge I	2003-08-28	7.5
53	1	1440	98	25	DimaN	2004-03-01	7.6
28	1	1181	94	12	ZrenBy	2003-09-01	7.6
14	1	2414	88	36	Serge I	2003-04-08	7.5
24	2	1590	86	6	Aaz	2004-02-26	6.9
29	2	1047	82	39	GiBis	2011-09-17	7.5
31	1	1014	64	7	Fiolent	2004-06-22	7.9
117	1	427	57	0	Fiolent	2003-12-26	7.6
7	1	113	54	40	Baser	2021-02-27	8.1
8	2	1445	50	94	Serge I	2008-06-21	7.7
48	1	1132	43	6	Serge I	2009-06-22	7.4
11	1	1872	42	15	ZrenBy	2003-09-01	7.5
22	1	1586	40	12	ZrenBy	2003-09-01	7.3
27	1	1247	36	8	Fiolent	2004-02-26	7.3
10	1	692	25	47	Serge I	2017-01-20	8.0
15	1	1178	24	8	Dmitrij Grinkevich	2012-04-21	7.5
306	2	7	19	0	Serge I	2021-10-15	7.5
301	0	43	7	0	pegoopik	2012-03-23	8.9

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