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

December 11, 01:36 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.
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

  • Site rules
  • SELECT (learning stage)
  • SELECT (learning stage,
      choosing DBMS)
  • SELECT (rating stages)
  • DML 
  • Transact-SQL tests
  • Data simulation
  • Visual simulation (painting)
  • Exercises voting

Forums

  • Learning stage
  • Rating stages
  • Favorites
  • Search
  • Blogs

Certification

  • Certified professionals
  • Statistics
  • Statistics over regions (map)
  • Confirm certificate

HELP

Query optimization

For employers

Support SQL-EX.RU

Звоните 7(495) 660-92-90 пластика груди
lantanclinic.ru
Vzp
vzp
petrocontrol.ru
Зеленая карта для авто в европу
зеленая карта в европу
inzuro.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);
Length - wording length in symbols;
Rank - average score on a result of voting.

No	Bonus	Solved	Time(min)	noOK	Length	Author	Date	Rank
217	4	9	31871	4	549	pegoopik	2015-08-28	9.2 (5)
147	4	26	14593	2	1213	$erges	2010-08-06	9.7 (19)
157	3	24	12925	2	960	anddros	2009-06-05	9.6 (15)
163	3	19	11408	0	1640	Ozzy	2010-01-08	9.6 (14)
143	5	44	11333	14	946	inkerman	2007-10-07	8.8 (29)
214	4	11	10103	0	433	pegoopik	2015-05-30	10.0 (7)
259	4	22	9370	1	276	anddros	2009-08-24	9.5 (13)
155	3	25	8819	3	761	vlksm	2009-04-17	10.0 (17)
216	3	11	8681	1	279	pegoopik	2015-05-15	9.9 (8)
181	4	15	8489	1	1869	Ozzy	2011-10-08	9.7 (10)
194	4	14	7588	2	1461	pegoopik	2012-07-13	10.0 (10)
253	3	30	7278	7	1097	$erges	2008-05-17	8.9 (20)
138	5	144	6385	32	949	Cyrilus	2005-12-09	9.2 (64)
161	3	21	6370	2	889	Ozzy	2009-11-06	9.2 (17)
224	3	10	6363	0	1979	selber	2017-04-14	9.4 (7)
231	3	5	6186	0	787	mcrain	2018-08-24	10.0 (3)
206	4	14	6127	0	1484	Baser	2013-11-23	9.1 (12)
225	2	9	6053	0	737	pegoopik	2017-07-15	9.8 (6)
211	2	13	5791	1	588	Baser	2014-06-30	9.8 (9)
230	2	6	5717	0	728	pegoopik	2018-07-27	9.8 (4)
255	4	13	5666	4	793	vlksm	2012-02-14	9.9 (8)
229	3	6	5468	1	1532	al29	2018-03-23	9.6 (5)
154	4	25	4892	3	848	anddros	2009-03-18	9.9 (17)
160	3	26	4731	0	961	Ozzy	2009-08-07	9.6 (17)
159	3	17	4480	0	565	anddros	2012-07-22	8.2 (14)
220	3	6	4388	1	1175	pegoopik	2016-12-17	10.0 (3)
232	3	5	4384	0	513	al29	2018-08-20	10.0 (4)
191	3	14	4212	0	948	qwrqwr	2012-06-08	9.5 (11)
252	2	34	3918	3	308	Ozzy	2009-06-14	8.3 (23)
149	3	33	3909	2	506	$erges	2008-09-08	9.2 (21)
257	4	16	3753	1	2758	pegoopik	2012-02-20	9.4 (12)
172	3	21	3717	0	1719	Ozzy	2011-03-11	9.7 (15)
171	3	19	3682	1	1670	Ozzy	2010-12-05	9.3 (15)
116	5	229	3494	20	469	$erges	2008-12-13	9.3 (107)
218	4	12	3491	2	1500	al29	2016-04-04	9.6 (7)
119	5	91	3203	5	703	Velmont	2014-03-07	9.7 (48)
188	3	17	3191	1	733	qwrqwr	2012-02-04	9.8 (12)
151	3	32	3152	5	1096	anddros	2008-12-30	8.9 (19)
189	4	14	3087	1	1563	Baser	2012-02-05	8.5 (11)
208	3	14	3063	0	821	pegoopik	2013-12-20	8.8 (12)
156	2	51	3004	3	391	anddros	2009-04-17	9.1 (29)
144	4	44	2928	4	950	pvv	2008-01-01	7.3 (27)
100	4	228	2916	10	650	qwrqwr	2010-04-27	9.4 (112)
167	3	22	2887	0	674	qwrqwr	2011-01-18	9.9 (15)
187	3	24	2802	0	978	=Maxim=	2011-12-31	8.8 (20)
102	4	164	2786	6	933	GriGrim	2011-07-16	9.4 (74)
153	3	35	2779	4	1539	Ozzy	2009-02-14	9.5 (20)
120	4	90	2597	1	239	pegoopik	2014-02-14	8.9 (43)
221	2	13	2539	0	1023	Baser	2016-11-05	8.6 (8)
190	4	16	2521	1	717	vlksm	2012-03-17	8.8 (13)
141	4	77	2335	9	977	vlksm	2006-10-29	9.0 (35)
179	3	17	2329	0	844	pegoopik	2011-09-17	9.2 (12)
178	3	22	2268	1	1680	Baser	2011-08-13	9.1 (15)
227	3	9	2137	1	2142	mcrain	2017-12-08	7.0 (5)
210	2	14	2132	0	483	_dimon_	2014-02-07	10.0 (11)
101	4	196	2125	14	1096	pegoopik	2010-11-20	9.4 (103)
145	3	68	2007	1	859	pvv	2008-01-07	8.6 (33)
184	2	25	1953	1	432	Baser	2011-11-26	8.8 (19)
72	4	978	1917	151	608	paparome	2005-12-03	9.2 (254)
164	2	36	1915	1	1622	anddros	2010-04-26	9.7 (22)
148	2	64	1910	8	894	vlksm	2008-09-06	9.3 (35)
228	1	16	1906	1	1419	qwrqwr	2018-01-12	10.0 (10)
98	4	562	1900	45	538	ZrenBy	2003-09-01	8.2 (120)
205	2	15	1877	0	529	qwrqwr	2013-11-22	8.9 (10)
193	2	21	1798	0	522	Baser	2012-07-06	8.3 (15)
87	4	611	1787	87	459	Roman Golubin	2006-07-14	9.3 (166)
146	3	59	1743	3	949	paparome	2008-01-22	9.7 (33)
89	3	392	1686	29	870	_Bkmz_	2008-06-21	7.9 (143)
165	2	29	1631	3	1600	vlksm	2010-03-18	9.9 (18)
137	4	188	1619	24	616	Cyrilus	2005-03-06	9.2 (66)
183	2	29	1611	2	518	GriGrim	2011-11-12	9.1 (15)
223	2	11	1596	1	641	Baser	2016-11-12	9.7 (7)
222	2	11	1583	1	1475	pegoopik	2016-12-23	9.8 (8)
182	3	22	1566	0	1377	Baser	2011-10-29	8.1 (17)
175	3	29	1548	0	2151	pegoopik	2011-04-28	8.5 (22)
196	3	23	1529	0	661	qwrqwr	2013-05-17	9.4 (14)
121	3	392	1527	4	804	ZrenBy	2004-02-26	7.8 (90)
169	3	29	1519	0	1559	Valdaj	2010-09-02	8.4 (21)
136	3	110	1492	5	618	Ozzy	2011-05-12	7.3 (47)
176	3	29	1484	0	385	qwrqwr	2011-05-20	9.5 (21)
219	2	14	1482	0	486	pegoopik	2016-04-08	9.9 (8)
132	3	106	1472	4	2500	risp	2010-01-25	7.7 (53)
200	3	17	1463	0	1129	qwrqwr	2013-10-05	9.3 (12)
152	3	45	1460	4	1301	vlksm	2009-01-05	9.7 (27)
158	3	36	1452	0	1174	Ozzy	2010-04-09	9.0 (22)
123	3	231	1445	39	1254	Ozzy	2009-08-22	9.0 (106)
198	2	21	1444	0	332	Angellore	2013-09-13	9.4 (15)
150	4	34	1442	4	909	@Nikotin	2008-11-09	8.5 (20)
212	3	15	1403	0	585	Baser	2014-10-14	8.8 (10)
135	3	61	1376	1	854	qwrqwr	2013-04-19	8.9 (33)
180	3	29	1375	0	274	qwrqwr	2011-09-16	9.6 (22)
199	3	18	1371	0	1448	Baser	2013-08-17	8.3 (13)
106	3	265	1362	5	647	vlksm	2008-11-27	8.7 (110)
213	2	25	1346	0	369	qwrqwr	2014-10-17	9.6 (15)
76	3	418	1344	15	949	silver	2010-01-23	8.8 (166)
96	3	393	1340	81	572	anddros	2008-11-22	8.8 (152)
77	2	272	1320	31	1053	selber	2015-07-10	8.7 (113)
85	3	337	1279	17	1397	Ozzy	2009-10-10	8.5 (129)
207	3	13	1255	0	486	pegoopik	2016-01-15	10.0 (8)
69	2	114	1246	9	210	Gosha	2017-12-15	9.3 (39)
226	3	9	1235	1	2054	pegoopik	2017-10-14	9.2 (5)
82	3	354	1235	14	1780	_Virt_	2010-04-27	8.2 (127)
186	1	36	1215	0	1447	Ozzy	2011-12-30	9.2 (24)
65	3	647	1180	45	671	Ozzy	2010-01-29	7.8 (233)
68	3	242	1174	20	608	pegoopik	2014-08-01	8.1 (94)
173	1	51	1172	3	945	Ozzy	2011-01-13	9.3 (28)
168	2	41	1159	2	455	qwrqwr	2010-08-27	9.5 (24)
84	3	385	1140	16	815	Ozzy	2009-12-26	8.4 (138)
93	3	146	1134	7	492	qwrqwr	2014-03-14	9.3 (60)
134	3	171	1049	4	821	pvv	2008-01-22	8.6 (68)
37	3	628	960	25	673	qwrqwr	2013-02-22	8.1 (227)
140	2	80	925	2	578	_Bkmz_	2010-01-30	8.9 (40)
233	1	9	868	1	2321	pegoopik	2019-03-08	10.0 (5)
71	3	500	805	18	941	anddros	2009-12-26	8.4 (171)
125	3	357	765	3	526	dimzv	2004-02-29	8.7 (83)
45	2	317	740	21	509	dumkan	2016-04-03	8.0 (94)
110	3	415	697	11	942	Snowbear	2006-03-14	8.8 (105)
195	3	25	669	0	722	Dmitrij Grinkevich	2013-04-20	9.1 (15)
127	2	53	642	2	985	GriGrim	2014-12-21	7.6 (23)
126	2	177	633	11	944	$erges	2008-09-07	8.5 (86)
58	3	508	632	11	440	qwrqwr	2013-03-01	8.2 (188)
99	3	175	617	8	956	Dmitrij Grinkevich	2012-05-05	8.0 (68)
251	4	68	594	3	850	paparome	2006-10-01	8.0 (29)
162	2	59	592	0	1067	Ozzy	2009-12-26	9.3 (34)
185	1	42	583	3	782	=Maxim=	2011-11-25	7.9 (25)
130	2	113	559	0	700	anddros	2010-05-22	8.8 (56)
64	3	528	542	45	508	qwrqwr	2010-05-13	7.9 (169)
174	1	55	535	1	1084	qwrqwr	2011-02-25	9.3 (32)
202	2	28	504	0	557	qwrqwr	2013-11-01	9.1 (16)
66	3	611	449	52	392	anddros	2009-12-26	8.4 (233)
307	2	17	421	0	1095	Baser	2017-06-29	8.4 (10)
254	1	43	420	2	1383	Baser	2011-09-02	8.7 (26)
107	2	388	417	9	688	Fiolent	2004-02-26	8.3 (90)
115	2	62	405	1	736	selber	2016-05-28	9.1 (24)
23	3	1403	391	118	249	Palkin	2007-03-29	8.3 (341)
142	2	113	388	1	944	paparome	2007-03-24	9.0 (47)
80	2	309	379	10	453	qwrqwr	2011-10-21	8.9 (122)
166	1	59	375	2	449	anddros	2010-07-26	9.6 (30)
177	1	52	372	0	935	pegoopik	2011-07-17	8.5 (26)
215	2	22	333	0	331	pegoopik	2015-03-06	9.3 (13)
170	2	53	332	1	320	qwrqwr	2010-10-24	9.0 (27)
88	3	258	329	4	521	crescent	2011-03-23	8.9 (102)
209	1	32	319	1	735	Baser	2013-12-30	8.0 (15)
92	2	538	317	9	405	paparome	2006-07-26	8.5 (113)
36	3	898	316	21	788	risp	2011-05-06	7.9 (281)
139	2	124	310	2	907	Snowbear	2006-09-09	8.3 (44)
47	3	836	291	14	608	qwrqwr	2010-11-20	8.0 (261)
111	2	437	280	3	545	Fiolent	2005-01-19	8.2 (89)
41	3	1003	279	17	271	qwrqwr	2010-04-26	8.0 (324)
60	3	1961	269	119	353	Serge I	2005-03-05	7.7 (304)
54	2	1230	256	44	706	Ozzy	2008-09-06	8.2 (431)
29	2	933	256	40	695	GiBis	2011-09-17	7.5 (305)
234	2	6	243	0	684	selber	2019-06-21	5.7 (3)
204	1	33	241	1	366	anddros	2013-11-19	8.7 (17)
118	2	412	236	1	206	Fiolent	2004-01-05	8.2 (80)
133	2	87	233	0	1614	pickman	2011-07-01	8.2 (45)
40	1	145	232	14	398	Serge I	2018-09-07	7.2 (43)
34	2	1035	230	25	750	qwrqwr	2010-09-24	7.9 (326)
105	2	122	219	0	610	Baser	2013-09-20	8.5 (45)
91	2	205	218	0	642	smog	2012-05-26	9.2 (81)
122	1	121	217	2	725	Dmitrij Grinkevich	2012-09-14	5.9 (47)
67	2	527	217	17	729	Ozzy	2010-04-27	8.3 (183)
129	2	268	206	7	658	DimaN	2004-03-01	7.5 (56)
112	2	417	195	3	324	VIG	2005-06-26	7.5 (74)
131	2	86	192	1	498	GriGrim	2012-05-25	8.5 (40)
43	2	400	189	4	648	qwrqwr	2015-04-24	8.5 (133)
75	2	361	186	4	644	qwrqwr	2011-07-22	7.4 (128)
260	2	52	183	0	999	qwrqwr	2012-02-03	7.7 (35)
49	2	1068	183	22	862	anddros	2009-06-05	7.8 (334)
20	2	1332	181	34	249	VIG	2003-09-01	8.0 (310)
62	2	609	175	8	446	Dmitrij Grinkevich	2012-02-11	8.0 (196)
86	2	319	173	0	433	Ozzy	2010-03-05	8.6 (105)
261	1	35	169	1	1495	Fomichev	2013-12-07	7.0 (19)
61	2	863	168	5	781	risp	2009-12-26	8.4 (288)
16	2	724	166	62	356	qwrqwr	2014-07-18	7.4 (221)
95	1	71	166	2	350	qwrqwr	2017-12-01	9.3 (29)
203	1	39	160	1	932	=Maxim=	2013-10-05	9.4 (23)
124	2	363	160	3	455	DimaN	2004-02-26	8.3 (79)
59	2	808	151	6	220	VIG	2003-12-22	8.3 (176)
304	2	24	151	0	1132	aks_nsk	2016-02-05	9.3 (15)
12	1	147	148	28	348	Serge I	2019-04-12	7.7 (43)
38	2	899	140	22	297	ZrenBy	2003-09-01	7.7 (175)
74	2	630	140	8	855	vlksm	2008-06-21	8.3 (186)
109	2	477	133	1	671	VIG	2003-12-23	7.9 (88)
201	2	37	127	0	749	Baser	2013-09-21	8.7 (23)
52	1	380	124	3	274	Serge I	2015-01-10	8.8 (116)
39	2	1255	122	18	263	Serge I	2003-08-28	7.4 (249)
78	2	386	122	3	451	_ORA_	2010-04-27	7.5 (118)
83	2	505	120	4	798	lepton	2006-09-29	8.4 (133)
94	2	234	120	0	773	pickman	2011-04-27	8.3 (83)
81	2	565	119	12	707	$erges	2008-05-10	8.2 (154)
33	2	1115	114	24	358	DimaN	2004-03-01	7.6 (319)
35	3	433	111	9	688	Baser	2015-09-18	8.7 (138)
104	1	123	108	0	571	pegoopik	2013-07-19	8.3 (51)
197	1	42	107	0	518	pegoopik	2013-06-10	8.8 (19)
44	2	619	106	5	348	Serge I	2011-11-25	7.9 (200)
79	1	937	104	14	403	Serge I	2003-06-05	7.7 (144)
128	1	222	104	4	829	inkerman	2007-09-14	8.3 (70)
46	2	1081	103	126	376	Serge I	2009-08-12	6.7 (294)
57	2	1749	102	14	281	Serge I	2005-05-07	7.8 (283)
90	1	216	102	0	499	Dmitrij Grinkevich	2012-03-03	7.8 (73)
305	1	24	101	0	160	Baser	2017-01-06	8.8 (13)
70	1	626	100	3	334	Serge I	2009-04-17	7.9 (201)
73	1	419	96	2	367	Ruslan1707	2010-11-02	7.4 (134)
51	1	440	95	11	410	Fiolent	2004-06-23	8.0 (117)
50	1	709	93	8	414	mslava	2003-12-22	8.3 (153)
113	1	119	91	0	497	smog	2013-03-29	8.4 (48)
17	2	1472	87	18	118	VIG	2003-04-29	8.1 (290)
103	1	123	86	1	850	Baser	2013-10-05	7.2 (47)
8	2	2100	83	100	101	Serge I	2003-04-08	7.9 (364)
10	1	500	83	41	179	Serge I	2017-01-20	8.1 (157)
114	1	435	83	4	298	Serge I	2003-12-24	8.4 (86)
256	1	39	82	1	436	anddros	2013-11-08	8.9 (20)
25	2	1082	81	30	208	DimaN	2004-06-22	7.0 (294)
24	2	1475	77	6	631	Aaz	2004-02-26	6.9 (425)
26	1	1338	73	23	269	VIG	2003-12-22	7.7 (331)
9	2	1184	72	22	510	vasia armor	2010-05-21	7.9 (358)
55	2	1279	66	72	600	Serge I	2008-06-21	7.6 (330)
28	1	1062	65	13	266	ZrenBy	2003-09-01	7.5 (201)
32	1	1218	64	7	529	Roman Golubin	2005-12-13	7.5 (285)
21	1	1043	64	8	680	paparome	2006-03-14	8.0 (246)
97	1	348	62	3	231	dimzv	2004-03-01	7.8 (72)
42	1	1500	57	14	254	Serge I	2003-06-05	7.6 (287)
117	1	414	55	0	193	Fiolent	2003-12-26	7.6 (76)
18	1	1471	53	6	149	ZrenBy	2003-09-01	7.6 (328)
192	2	47	52	0	709	Baser	2012-03-03	9.2 (25)
30	1	1613	51	3	154	Serge I	2003-08-28	7.9 (358)
27	1	1131	51	8	368	Fiolent	2004-02-26	7.2 (264)
48	1	1043	51	6	317	Serge I	2009-06-22	7.4 (277)
56	1	941	48	3	581	Fiolent	2004-06-22	7.9 (250)
31	1	897	48	7	342	Fiolent	2004-06-22	7.8 (225)
19	1	1835	47	22	279	Serge I	2004-06-23	7.5 (383)
14	1	2272	47	36	133	Serge I	2003-04-08	7.5 (397)
108	1	480	46	0	412	mslava	2003-12-23	7.3 (86)
22	1	1464	45	11	261	ZrenBy	2003-09-01	7.2 (341)
302	0	37	45	0	510	pegoopik	2012-07-27	7.6 (11)
63	1	1232	43	5	190	VIG	2003-06-05	7.5 (215)
7	1	2254	42	66	303	Serge I	2006-11-17	8.0 (421)
53	1	1353	40	25	230	DimaN	2004-03-01	7.6 (348)
13	1	1548	38	21	231	ZrenBy	2003-09-01	7.4 (369)
15	1	1032	33	8	252	Dmitrij Grinkevich	2012-04-21	7.5 (292)
11	1	1710	33	14	125	ZrenBy	2003-09-01	7.5 (394)
306	1	11	14	0	541	Serge I	2019-07-05	10.0 (7)
258	3	25	13	0	1070	Baser	2014-09-19	7.6 (10)
301	0	43	8	0	55	pegoopik	2012-03-23	8.9 (20)
303	0	33	7	0	141	Serge I	2013-06-28	9.5 (14)

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References