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July 31, 21:59 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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Today statistics

nLog - number of logins;
nSelEx - number of select exercises solved today;
lastEx - number of last select exercise solved;
nDmlEx - number of dml exercises solved today;
Scores - sum of points on the exercises solved today (select and dml);
numLrnEx, LrnScores - number of exercises solved today and sum of points on learning stage

No Surname nLog nSelEx lastEx nDmlEx Scores numLrnEx LrnScores

1 Krasovskij E.A. (Pegoopik) 2 5 6 9 23

2 Kuz'min M. (AnaceH) 1 2 21 7 10

3 Dubinskij A.V. (_yizraor) 1 3 130 7

4 Mats V.V. (Easy-Human) 3 3 79 6

5 Chebykin D.N. (GriGrim) 2 2 22 4

6 gao (gaoweizhi) 3 2 7 3

7 Khramtsov (Uladzimir) 4 1 1 3 5 10

8 dekart (Victor_73) 1 1 74 2

9 Vanin V. (_Virt_) 1 1 83 2

10 Belousov I.A. (MAD_B) 1 1 35 1

11 Litvin M.S. (Mike.S.Litvin) 1 1 15 1

12 Dzhidzhikov A. (arslan1984) 1 1 1

13 George (Renju) 1 1 1

14 Petrovi4 (nukanaka) 1 19 28

15 Zatonskaya E. (zatonskaya) 2 17 21

16 Pertsev A.A. (haaji) 3 16 19

17 inopl (inopl2) 1 15 17

18 Shmorgun (ambrase) 1 14 15

19 atomix A.A. (andrejcheg) 1 6 14

20 Karakozov (ElKlon) 1 10 12

21 Matveev E. (Evg76) 1 8 12

22 Battle F.W. (battle.wesnoth) 1 8 12

23 Shvatskiy (Xe-Xe) 4 6 12

24 K S.A. (elim1980s) 2 4 12

25 bruder (jbruder) 2 8 9

26 Dimant A. (Ant archangel) 2 7 9

27 Valdez J.C. (jheimzkie) 1 7 8

28 ballesterol J.T. (mando_man) 1 7 8

29 Kommoju B. (bishu) 1 4 8

30 a A.A. (sofilala) 1 4 8

31 Dzhidzhikov A. (arslan1984) 1 3 8

32 Verkhovykh A. (fuksia) 1 6 6

33 Pandey A. (Ashutosh1977) 1 6 6

34 Popov S. (Fil0sOFFF) 2 6 6

35 Kolotushkin (Takhin) 1 6 6

36 Klement'eva S.V. (charm) 1 3 6

37 Kutty (AmmuK) 1 5 5

38 Zhivotnov (127) 2 5 5

39 nikolaev I.V. (Ivan429) 2 5 5

40 Tatulyants I. (Oduvanchik) 1 5 5

41 zhdynyak (szhdyn) 1 3 5

42 qwat (qwatt) 1 2 5

43 Chakhoyan (dikij khaker) 1 4 4

44 johnson C. (jalal) 1 4 4

45 Yunusova O.A. (lolo) 1 4 4

46 Krizhanovsky (selah) 1 2 4

47 Pyatin G.A. (Pyatin) 1 2 4

48 Arzamastsev D.A. (DeName) 2 3 3

49 Kartavtsev (Alex117) 2 3 3

50 Nevazhno K.Z. (dashulya) 1 3 3

51 nikitin V.A. (khochu vse znat') 1 3 3

52 Sokolov P.E. (Fa1CoN) 1 3 3

53 lunokhod (lunokhod) 2 2 3

54 Danilenko (Julia_88) 1 2 3

55 vulupala (saritha) 2 2 3

56 Tsang (hibye) 2 1 3

57 mgn Y. (yaroslavmgn_) 1 2 2

58 Baranchugov A.Yu. (ALEX_BORN) 4 2 2

59 noelia (noeliabta.90) 1 2 2

60 ranjeet R. (raju123) 1 2 2

61 Dolgopolov V.A. (VDShark) 5 1 2

62 Pasechnik V.A. (Valdemar777) 2 1 1

63 captain (Rinat2005) 1 1 1

64 C. D. (deem3r) 2 1 1

65 Mashkov (Diamond[[[) 1 1 1

66 Santos J.C. (pERz) 1 1 1

67 delgado E. (emilio) 3 1 1

68 Gotalsky (DobMos) 1 1 1

69 Sibgatullin I.N. (Mio) 2

70 Zajac (sudsycat) 2

71 Lyubenko (Atoy) 1

72 Filippov (Igor_Philippov) 2

73 Alex D. (1stMAN) 1

74 frosya (fro) 1

75 Kir'yanov M.Yu. (Mikha) 1

76 Aleksandrovich (Evgeniy_007) 1

77 Bazardaruev N.B. (Nomtoxa) 1

78 Fastakovskij D.S. (Dennnis) 1

79 Maksimov (Dima_1980) 1

80 Volkov P. (Sal28) 1

81 Belyaev A.V. (AlValBel) 1

82 sulieman (syrian danya) 1

83 Petrov-Vodkin I.Z. (windwail0) 1

84 Sosa (hsosa) 1

85 none N.N. (underdog0218) 1

86 ahmed M. (minhaz) 1

87 Dionisiev D.S. (didomido_) 1

88 Uyen T. (hoangfvinhx) 1

89 joseph S.-. (jo_arnold) 1

90 Shahul M.F. (Meers) 1

91 Khomuttsov D.Yu. (Dthhoma) 1

92 Smirnoff N. (NikolaySmirnoff) 1

93 Qaisar N.M. (Qnadeem) 2

94 Novodvorskyi O. (oleksii.n) 1

95 Shedenkov A.P. (AleksejSh) 1

96 shah A.C. (ashu18485) 2

97 Khaliman V.S. (Dark Voltage) 1

98 Knuykh (Worker) 1

99 Gukasyan A. (Artur) 1

100 Ivanov V. (Nameless1983) 1

101 Mazur A.A. (Ondre) 2

102 Leschev A.O. (ArtIMen) 1

103 Naporova M.M. (Melisa.87) 1

104 Lapun'ka I.N. (Ioan) 1

105 Babaytsev K.I. (babaytsev) 1

106 Pimenova M. (Self-in-use) 2

107 Armenta J.C. (Rata) 2

108 Gur E. (Ella) 1

109 Afanas'ev K.M. (zent) 1

110 Pravilov (Demid) 1

111 Eremenko E.N. (Goshick) 1

112 Kryachko M.O. (hitmax) 1

113 Kharlanchuk M.G. (MKharlanchuk) 1

114 Lebedev S.Yu. (Klukvin) 1

115 Kochetova A. (anastusha) 2

116 Lavrenko A. (Taery) 1

117 Nikitenko S.V. (nikol') 1

118 Rybkina T.V. (Rybka) 1

119 shah H.C. (HiravShah) 1

120 Epishova A. (Anna E) 1

121 Ivanov D.I. (IDimas) 1

122 Dvoryaninov V.A. (Valdaj) 1

123 Polubinskij A.Ya. (polubinsky) 1

124 Ledenev S.A. (Shurgenz) 1

125 Naporova S.M. (SN) 1

126 Zyrin V.E. (Vezyr) 1

127 Schukin A.S. (Faust) 1

128 Karasyova N.V. (vlksm) 5

129 Vil'danov M. (mar_vi) 1

130 Lozinin (Kri) 1

131 Bespyatov A. (lelik_b) 1

132 plisko O.V. (olpl) 1

133 k. (nida) 1

134 Nikolaev V.V. (Patr1ot_CTF) 2

135 Bakulkin (EugenBk) 1

136 Sadykov S.R. (SaidSR) 1

137 Ostroukhov K.G. (daosman) 1

138 belousov Yu.V. (YuranBBB) 1

139 Usik V.N. (Vladius) 2

140 Penzar' V.V. (Victor Penzar) 1

141 Martynenko V.Yu. (Fuddy-Duddy) 1

142 Fomchenkov V.N. (hamp) 1

143 Sal'nikov S.A. ($erges) 1

144 Zotov P.G. (Ozzy) 4

145 Makarov I.A. (_Bkmz_) 2

146 Sidorov A.S. (CodeIN) 1

147 Chobitok V. (vasia armor) 2

148 Kozlikova D.A. (kozlik) 1

149 Drozdkov A.N. (anddros) 1

150 Gorshelev M.O. (eximka) 1

151 Kudryashov O. (Olaf) 2

152 Tyunin E.B. (Tunin) 1

153 Kreslavskij O.M. (Arcan) 2

154 Tolstova O.V. (Ulga) 1

155 Bojko D.M. (Angellore) 3

156 Buldenkov D.A. (eXeQuThor) 1

157 Pluzhnikov D.M. (Tamagochi) 2

158 Levenkov S.N. (Cergej L) 1

159 ... C... (carlosdaniel2010) 1

160 petrenko S.S. (getrix_) 1

161 Telenkov D. (Nenuacho) 1

162 Fedorov M.V. (fearX) 1

163 Unregistered 31

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