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

June 26, 06:46 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.
NOTE: Your browser should support Cookies and Javascript to provide correct usage of this site. If you use content filter, it should allow opening child windows to explore help pages.

Ratings

  • Top 100
  • Top 100 on latest exercises
  • "Liberal" rating
  • Olympic rating
  • TOP 100 of Learning Stage
  • Rating by summation of ranks
  • Top 10 (photos)
  • Last-week results
  • Rating of second-stage exercises (average)
  • Rating of 2nd-stage exercises (median)
  • Author's rating  • 2nd stage rating up to exercise:
   enter No 
  • Rating on the exercise:
   enter No
  • Optimistic rating
   enter factor

Statistics

  • Today statistics
  • Site's old residents
  • Recent leaders activity
  • Сhanges in exercises' TOP 10
  • Results' chart

SQL exercises

  • SELECT (learning stage)
  • SELECT (learning stage,
      choosing DBMS)
  • SELECT (rating stages)
  • DML 
  • Modelling of data
  • Visual modelling (painting)
  • Exercises voting

Forums

  • Learning stage
  • Rating stages
  • Favorites
  • Search

Certification

  • About certification
  • The first certificate in SQL
  • Certified professionals
  • Statistics
  • Statistics over regions (map)
  • Confirm certificate

HELP

Query optimization

Transact-SQL tests

For employers

Support SQL-EX.RU

Poll

Would you get the following certificate?

Тренер по большому теннису в Москве зао
Новости тенниса. Товары для настольного тенниса
jprotennis.ru
Ландшафтный дизайн
Дизайн и ремонт квартир. Услуги ландшафтного дизайна и озеленения
zelmeridian.ru
Металлокерамические коронки - металлокерамические коронки Екатеринбург .
citydent96.ru

Rating of 2nd-stage exercises (median)

Rating of second-stage exercises (average)

No - exercise number; Bonus - level of difficulty;
Solved - number of visitors, who have solved this exercise;
Time(min) - the median time (calculated over all participants) 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
217	4	5	17420	3	pegoopik	2015-08-28	9.3 (3)
147	4	22	15084	1	$erges	2010-08-06	9.8 (15)
157	3	21	13065	2	anddros	2009-06-05	9.5 (12)
143	5	42	11323	15	inkerman	2007-10-07	9.0 (28)
259	4	21	9370	0	anddros	2009-08-24	9.5 (12)
253	3	27	8719	7	$erges	2008-05-17	8.9 (17)
155	3	21	8713	2	vlksm	2009-04-17	10.0 (13)
163	3	16	8342	0	Ozzy	2010-01-08	9.5 (11)
194	4	13	7588	1	pegoopik	2012-07-13	10.0 (9)
214	4	7	6392	1	pegoopik	2015-05-30	10.0 (5)
138	5	139	6385	32	Cyrilus	2005-12-09	9.1 (60)
178	3	19	5910	1	Baser	2011-08-13	8.9 (12)
181	4	12	5296	1	Ozzy	2011-10-08	10.0 (7)
161	3	17	4787	2	Ozzy	2009-11-06	9.5 (13)
160	3	22	4731	0	Ozzy	2009-08-07	9.6 (13)
211	2	11	4638	1	Baser	2014-06-30	9.7 (7)
255	4	12	4399	2	vlksm	2012-02-14	9.9 (7)
220	3	3	4388	2	pegoopik	2016-12-17	10.0 (2)
191	3	11	4212	0	qwrqwr	2012-06-08	9.5 (8)
154	4	21	4200	3	anddros	2009-03-18	9.9 (13)
206	4	11	4162	0	Baser	2013-11-23	8.8 (9)
149	3	27	3818	2	$erges	2008-09-08	9.0 (15)
172	3	18	3717	0	Ozzy	2011-03-11	9.7 (12)
257	4	14	3710	0	pegoopik	2012-02-20	9.5 (11)
171	3	15	3682	0	Ozzy	2010-12-05	9.5 (11)
252	2	29	3569	5	Ozzy	2009-06-14	8.3 (19)
119	5	69	3569	4	Velmont	2014-03-07	9.8 (37)
218	4	8	3491	1	al29	2016-04-04	10.0 (5)
116	5	210	3322	20	$erges	2008-12-13	9.3 (101)
216	3	8	3223	1	pegoopik	2015-05-15	10.0 (6)
100	4	201	3165	9	qwrqwr	2010-04-27	9.4 (103)
151	3	27	3152	3	anddros	2008-12-30	9.5 (14)
208	3	11	3063	0	pegoopik	2013-12-20	8.6 (9)
167	3	19	3032	0	qwrqwr	2011-01-18	9.9 (12)
188	3	14	3005	1	qwrqwr	2012-02-04	9.7 (10)
156	2	43	3004	2	anddros	2009-04-17	9.0 (23)
224	3	5	2984	0	selber	2017-04-14	9.5 (4)
189	4	11	2930	1	Baser	2012-02-05	8.4 (9)
102	4	139	2835	5	GriGrim	2011-07-16	9.5 (65)
144	4	38	2809	3	pvv	2008-01-01	7.1 (22)
221	2	9	2539	1	Baser	2016-11-05	9.2 (5)
207	3	7	2363	0	pegoopik	2016-01-15	10.0 (4)
101	4	171	2309	12	pegoopik	2010-11-20	9.4 (93)
210	2	11	2132	0	_dimon_	2014-02-07	10.0 (8)
165	2	23	2120	3	vlksm	2010-03-18	10.0 (13)
120	4	68	2024	1	pegoopik	2014-02-14	8.8 (38)
98	4	535	2022	46	ZrenBy	2003-09-01	8.1 (110)
145	3	63	1999	1	pvv	2008-01-07	8.5 (28)
164	2	29	1915	1	anddros	2010-04-26	9.8 (17)
148	2	59	1910	6	vlksm	2008-09-06	9.2 (31)
141	4	69	1897	8	vlksm	2006-10-29	9.0 (28)
72	4	928	1882	149	paparome	2005-12-03	9.2 (232)
87	4	580	1828	83	Roman Golubin	2006-07-14	9.3 (154)
153	3	28	1812	4	Ozzy	2009-02-14	9.4 (14)
89	3	364	1739	28	_Bkmz_	2008-06-21	7.9 (132)
205	2	12	1707	0	qwrqwr	2013-11-22	8.9 (7)
187	3	20	1658	1	=Maxim=	2011-12-31	8.5 (16)
150	4	31	1652	4	@Nikotin	2008-11-09	8.8 (17)
184	2	20	1643	0	Baser	2011-11-26	9.2 (15)
179	3	14	1619	0	pegoopik	2011-09-17	9.0 (9)
137	4	183	1619	24	Cyrilus	2005-03-06	9.2 (62)
146	3	54	1606	3	paparome	2008-01-22	9.7 (29)
159	3	14	1596	0	anddros	2012-07-22	8.3 (11)
196	3	21	1529	0	qwrqwr	2013-05-17	9.4 (12)
136	3	106	1492	5	Ozzy	2011-05-12	7.5 (44)
175	3	24	1484	0	pegoopik	2011-04-28	8.4 (19)
132	3	100	1472	4	risp	2010-01-25	7.7 (50)
121	3	374	1471	4	ZrenBy	2004-02-26	7.8 (86)
123	3	212	1457	38	Ozzy	2009-08-22	9.0 (101)
200	3	14	1452	0	qwrqwr	2013-10-05	9.1 (9)
222	2	6	1448	1	pegoopik	2016-12-23	10.0 (4)
198	2	16	1444	0	Angellore	2013-09-13	9.3 (12)
169	3	26	1443	0	Valdaj	2010-09-02	8.4 (18)
106	3	241	1432	6	vlksm	2008-11-27	8.7 (102)
215	2	15	1412	0	pegoopik	2015-03-06	8.9 (8)
77	2	215	1393	32	selber	2015-07-10	8.7 (90)
96	3	366	1386	81	anddros	2008-11-22	8.8 (144)
135	3	56	1376	1	qwrqwr	2013-04-19	9.1 (29)
180	3	26	1375	0	qwrqwr	2011-09-16	9.7 (19)
76	3	368	1371	13	silver	2010-01-23	8.8 (145)
199	3	15	1350	0	Baser	2013-08-17	8.3 (11)
140	2	71	1315	2	_Bkmz_	2010-01-30	8.8 (35)
176	3	26	1307	0	qwrqwr	2011-05-20	9.4 (18)
182	3	18	1288	0	Baser	2011-10-29	8.1 (14)
85	3	303	1243	19	Ozzy	2009-10-10	8.5 (117)
190	4	13	1217	0	vlksm	2012-03-17	8.8 (10)
186	1	30	1215	0	Ozzy	2011-12-30	9.8 (18)
183	2	24	1205	3	GriGrim	2011-11-12	9.0 (12)
82	3	316	1201	6	_Virt_	2010-04-27	8.2 (114)
152	3	40	1189	4	vlksm	2009-01-05	9.7 (22)
65	3	579	1178	41	Ozzy	2010-01-29	7.7 (208)
93	3	116	1177	5	qwrqwr	2014-03-14	9.2 (50)
173	1	45	1172	2	Ozzy	2011-01-13	9.4 (23)
84	3	352	1120	13	Ozzy	2009-12-26	8.3 (130)
51	2	267	1096	11	qwrqwr	2014-07-18	6.9 (85)
223	2	6	1050	1	Baser	2016-11-12	10.0 (4)
134	3	167	1049	3	pvv	2008-01-22	8.6 (65)
193	2	16	1040	1	Baser	2012-07-06	8.2 (11)
68	3	175	1030	14	pegoopik	2014-08-01	8.2 (71)
158	3	32	1016	0	Ozzy	2010-04-09	8.8 (19)
37	3	484	1004	22	qwrqwr	2013-02-22	8.2 (174)
45	2	162	1003	21	dumkan	2016-04-03	7.6 (49)
212	3	11	994	1	Baser	2014-10-14	8.8 (8)
99	3	146	949	10	Dmitrij Grinkevich	2012-05-05	7.9 (60)
168	2	34	945	1	qwrqwr	2010-08-27	9.6 (17)
71	3	447	848	19	anddros	2009-12-26	8.3 (152)
213	2	23	721	0	qwrqwr	2014-10-17	9.2 (13)
58	3	390	720	10	qwrqwr	2013-03-01	8.1 (146)
110	3	394	713	9	Snowbear	2006-03-14	8.8 (99)
125	3	338	704	3	dimzv	2004-02-29	8.7 (80)
251	4	63	634	3	paparome	2006-10-01	7.8 (25)
126	2	169	601	8	$erges	2008-09-07	8.5 (82)
195	3	21	586	0	Dmitrij Grinkevich	2013-04-20	8.9 (12)
185	1	37	583	3	=Maxim=	2011-11-25	8.2 (21)
130	2	106	559	0	anddros	2010-05-22	8.8 (52)
162	2	52	554	1	Ozzy	2009-12-26	9.4 (30)
64	3	448	513	40	qwrqwr	2010-05-13	7.8 (144)
219	3	7	461	2	pegoopik	2016-04-08	10.0 (4)
174	1	49	449	0	qwrqwr	2011-02-25	9.3 (28)
66	3	547	449	51	anddros	2009-12-26	8.4 (211)
127	2	47	443	2	GriGrim	2014-12-21	7.3 (20)
166	1	53	431	2	anddros	2010-07-26	9.5 (26)
107	2	364	417	9	Fiolent	2004-02-26	8.1 (81)
23	3	1233	397	111	Palkin	2007-03-29	8.3 (287)
202	2	23	390	0	qwrqwr	2013-11-01	9.8 (12)
115	2	34	388	0	selber	2016-05-28	9.3 (15)
142	2	106	379	1	paparome	2007-03-24	9.0 (43)
177	1	47	372	0	pegoopik	2011-07-17	8.4 (23)
80	2	262	360	12	qwrqwr	2011-10-21	8.9 (105)
92	2	510	332	9	paparome	2006-07-26	8.4 (104)
88	3	227	331	3	crescent	2011-03-23	8.9 (91)
254	1	38	321	2	Baser	2011-09-02	8.6 (21)
36	3	753	320	19	risp	2011-05-06	7.9 (231)
209	1	27	319	1	Baser	2013-12-30	8.1 (11)
170	2	49	315	1	qwrqwr	2010-10-24	8.8 (24)
139	2	117	310	2	Snowbear	2006-09-09	8.3 (40)
47	3	718	296	14	qwrqwr	2010-11-20	7.9 (223)
60	3	1851	291	119	Serge I	2005-03-05	7.7 (268)
41	3	874	285	21	qwrqwr	2010-04-26	7.9 (277)
111	2	416	277	3	Fiolent	2005-01-19	8.3 (84)
54	2	1117	260	43	Ozzy	2008-09-06	8.2 (391)
118	2	393	242	1	Fiolent	2004-01-05	8.2 (76)
34	2	891	240	24	qwrqwr	2010-09-24	7.9 (275)
29	2	779	234	34	GiBis	2011-09-17	7.3 (251)
67	2	464	232	16	Ozzy	2010-04-27	8.3 (163)
133	2	81	228	0	pickman	2011-07-01	8.1 (42)
105	2	96	224	0	Baser	2013-09-20	8.5 (38)
91	2	176	215	0	smog	2012-05-26	9.2 (70)
122	1	100	214	2	Dmitrij Grinkevich	2012-09-14	6.0 (44)
129	2	261	206	7	DimaN	2004-03-01	7.4 (52)
112	2	397	204	3	VIG	2005-06-26	7.5 (70)
131	2	80	198	1	GriGrim	2012-05-25	8.4 (37)
49	2	953	193	21	anddros	2009-06-05	7.8 (297)
260	2	49	183	0	qwrqwr	2012-02-03	7.6 (32)
204	1	27	181	1	anddros	2013-11-19	8.8 (13)
20	2	1149	178	32	VIG	2003-09-01	8.0 (257)
43	2	255	175	3	qwrqwr	2015-04-24	8.5 (91)
61	2	755	170	4	risp	2009-12-26	8.4 (252)
86	2	286	170	0	Ozzy	2010-03-05	8.6 (95)
75	2	308	168	5	qwrqwr	2011-07-22	7.5 (109)
261	1	28	165	2	Fomichev	2013-12-07	6.5 (14)
304	2	19	165	1	aks_nsk	2016-02-05	9.5 (12)
62	2	498	160	8	Dmitrij Grinkevich	2012-02-11	7.9 (164)
124	2	344	154	3	DimaN	2004-02-26	8.2 (75)
59	2	693	146	4	VIG	2003-12-22	8.4 (141)
74	2	582	143	8	vlksm	2008-06-21	8.2 (172)
16	2	511	140	52	qwrqwr	2014-07-18	7.4 (154)
203	1	33	139	1	=Maxim=	2013-10-05	9.5 (18)
52	1	243	138	6	Serge I	2015-01-10	8.6 (82)
109	2	453	138	1	VIG	2003-12-23	8.0 (82)
83	2	468	124	4	lepton	2006-09-29	8.4 (118)
94	2	205	120	1	pickman	2011-04-27	8.3 (74)
81	2	518	119	13	$erges	2008-05-10	8.1 (139)
78	2	338	117	3	_ORA_	2010-04-27	7.3 (105)
38	2	756	116	21	ZrenBy	2003-09-01	7.8 (136)
57	2	1636	112	14	Serge I	2005-05-07	7.7 (251)
35	3	264	109	7	Baser	2015-09-18	9.0 (83)
201	2	33	109	0	Baser	2013-09-21	8.7 (20)
39	2	1120	108	18	Serge I	2003-08-28	7.4 (203)
104	1	97	108	1	pegoopik	2013-07-19	8.3 (44)
33	2	966	107	25	DimaN	2004-03-01	7.6 (280)
46	2	963	107	126	Serge I	2009-08-12	6.4 (261)
128	1	216	106	4	inkerman	2007-09-14	8.3 (67)
70	1	576	104	3	Serge I	2009-04-17	7.9 (187)
79	1	891	104	13	Serge I	2003-06-05	7.6 (129)
103	1	97	103	1	Baser	2013-10-05	7.1 (41)
90	1	187	102	0	Dmitrij Grinkevich	2012-03-03	7.7 (65)
197	1	37	102	1	pegoopik	2013-06-10	8.7 (15)
73	1	370	97	2	Ruslan1707	2010-11-02	7.2 (117)
44	2	493	96	2	Serge I	2011-11-25	7.9 (159)
113	1	97	93	0	smog	2013-03-29	8.5 (43)
114	1	415	87	4	Serge I	2003-12-24	8.4 (81)
305	1	14	87	0	Baser	2017-01-06	9.3 (6)
69	1	573	86	1	mslava	2003-12-22	8.3 (118)
40	2	1901	85	73	Serge I	2003-04-08	7.7 (278)
50	2	1267	80	8	VIG	2003-04-29	8.2 (236)
24	2	1311	76	7	Aaz	2004-02-26	6.8 (377)
25	2	915	76	27	DimaN	2004-06-22	6.9 (248)
95	1	286	71	0	Fiolent	2004-06-23	8.0 (71)
55	2	1166	69	72	Serge I	2008-06-21	7.5 (298)
17	2	933	68	4	vasia armor	2010-05-21	7.7 (265)
32	1	1071	67	8	Roman Golubin	2005-12-13	7.4 (244)
26	1	1176	65	21	VIG	2003-12-22	7.7 (289)
10	1	159	61	16	Serge I	2017-01-20	7.9 (67)
42	1	1373	59	15	Serge I	2003-06-05	7.5 (252)
97	1	319	59	4	dimzv	2004-03-01	7.7 (65)
21	1	862	58	6	paparome	2006-03-14	7.9 (202)
117	1	395	57	0	Fiolent	2003-12-26	7.6 (72)
28	1	901	56	12	ZrenBy	2003-09-01	7.4 (159)
192	2	43	52	0	Baser	2012-03-03	9.2 (22)
30	1	1466	51	3	Serge I	2003-08-28	7.7 (309)
18	1	1280	50	4	ZrenBy	2003-09-01	7.4 (279)
48	1	927	50	6	Serge I	2009-06-22	7.3 (243)
256	1	34	50	1	anddros	2013-11-08	9.1 (17)
56	1	828	48	3	Fiolent	2004-06-22	7.7 (216)
19	1	1657	47	19	Serge I	2004-06-23	7.4 (337)
31	1	744	47	6	Fiolent	2004-06-22	7.6 (177)
27	1	969	46	8	Fiolent	2004-02-26	7.2 (221)
108	1	456	45	0	mslava	2003-12-23	7.4 (79)
22	1	1291	44	10	ZrenBy	2003-09-01	7.1 (294)
14	1	2071	44	34	Serge I	2003-04-08	7.4 (340)
12	1	2027	43	59	Serge I	2006-11-17	7.8 (351)
63	1	1122	42	5	VIG	2003-06-05	7.5 (183)
53	1	1238	42	25	DimaN	2004-03-01	7.4 (314)
302	0	34	36	0	pegoopik	2012-07-27	7.8 (9)
13	1	1336	35	18	ZrenBy	2003-09-01	7.3 (310)
11	1	1492	32	10	ZrenBy	2003-09-01	7.3 (332)
15	1	819	30	6	Dmitrij Grinkevich	2012-04-21	7.3 (237)
306	1	9	11	0	no_more	2017-05-19	9.4 (5)
303	0	28	7	0	Serge I	2013-06-28	9.7 (13)
301	0	39	7	0	pegoopik	2012-03-23	8.8 (18)
258	3	21	3	1	Baser	2014-09-19	7.4 (7)

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References