Language

July 31, 21:16 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.

Login: Password:
	forgot password? Registration

Ratings

  • Top 100
  • "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 
  • 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 (rating stages)
  • DML

Forums

  • Learning stage
  • Rating stages
  • Favorites
  • Search

Certification

  • About certification
  • Certified professionals
  • Statistics
  • Confirm certificate

HELP

Transact-SQL tests

Modelling of data

Personal
page

Exercises voting

Query optimization

Developers & Thanks

For employers

References

Feedback

Support SQL-EX.RU

Poll

For what DBMS, besides SQL Server, you would like to have exercises on the site?

Results of exercises voting

In this Section you can see the results of voting for the tasks of the second and the third stages (SELECT exercises) on 10-score scale.
In order to estimate the tasks (if you have solved these yet), click here.

No	Exercise #	Rank	Number of votes
1	147	10.0	10
2	130	10.0	8
3	154	10.0	6
4	166	10.0	6
5	155	10.0	5
6	159	10.0	3
7	157	10.0	2
8	165	10.0	2
9	146	9.9	14
10	156	9.9	9
11	149	9.9	8
12	152	9.8	12
13	162	9.7	9
14	100	9.6	14
15	151	9.6	8
16	153	9.6	7
17	164	9.6	5
18	116	9.5	42
19	138	9.4	36
20	87	9.3	76
21	137	9.3	32
22	150	9.3	10
23	161	9.3	4
24	160	9.3	4
25	158	9.3	3
26	72	9.2	98
27	86	9.2	15
28	163	9.2	5
29	141	9.1	15
30	148	9.1	13
31	123	8.9	49
32	106	8.9	43
33	145	8.9	16
34	110	8.8	46
35	71	8.8	38
36	140	8.8	14
37	142	8.7	22
38	126	8.6	40
39	143	8.6	11
40	125	8.5	35
41	134	8.5	32
42	92	8.4	39
43	111	8.4	34
44	128	8.4	34
45	76	8.4	31
46	96	8.3	80
47	89	8.3	56
48	107	8.3	35
49	114	8.3	34
50	118	8.3	32
51	132	8.3	13
52	68	8.2	108
53	98	8.2	43
54	139	8.2	22
55	105	8.1	42
56	103	8.1	37
57	124	8.1	26
58	63	8.0	99
59	74	8.0	74
60	61	8.0	54
61	85	8.0	31
62	144	8.0	12
63	54	7.9	192
64	65	7.9	43
65	84	7.9	39
66	66	7.8	59
67	115	7.8	26
68	67	7.8	18
69	99	7.8	13
70	70	7.7	72
71	77	7.7	57
72	81	7.7	56
73	41	7.7	44
74	109	7.7	33
75	129	7.7	24
76	136	7.7	23
77	58	7.6	104
78	69	7.6	63
79	75	7.6	55
80	121	7.5	39
81	122	7.5	33
82	97	7.4	34
83	113	7.4	29
84	135	7.4	20
85	53	7.3	159
86	62	7.3	112
87	49	7.3	110
88	90	7.3	43
89	59	7.3	31
90	112	7.3	27
91	82	7.3	16
92	37	7.2	114
93	36	7.2	66
94	95	7.2	37
95	57	7.1	89
96	64	7.1	87
97	104	7.1	32
98	119	7.1	31
99	60	7.0	117
100	40	7.0	68
101	79	7.0	47
102	108	7.0	35
103	101	7.0	35
104	93	7.0	33
105	91	7.0	28
106	127	7.0	24
107	78	7.0	20
108	38	6.9	58
109	73	6.9	35
110	55	6.8	134
111	33	6.8	91
112	48	6.8	78
113	117	6.8	26
114	42	6.7	63
115	45	6.7	36
116	51	6.7	36
117	251	6.6	14
118	52	6.5	142
119	50	6.5	113
120	39	6.5	57
121	83	6.5	47
122	80	6.5	42
123	35	6.4	99
124	32	6.4	67
125	94	6.4	30
126	133	6.4	22
127	34	6.3	74
128	102	6.3	35
129	131	6.3	20
130	43	6.2	80
131	88	6.2	61
132	47	6.1	109
133	44	6.1	52
134	56	6.0	116
135	46	6.0	94
136	120	5.8	28
137	252	5.8	8

To vote

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References