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Connected to Oracle Database 10g Enterprise Edition Release 10.2.0.4.0
Connected as mni
SQL>
SQL> With DirtyData As ( -- les données initiales
2 Select '73282932000074' num_siret From dual Union All
3 Select '37282932000074' num_siret From dual Union All
4 Select '37282932000' num_siret From dual Union All
5 Select '00000000000000' num_siret From Dual Union ALL
6 Select Null num_siret From Dual Union ALL
7 Select 'N''importe quoi' num_siret From Dual
8 ), Data As ( -- les données filtrèes
9 Select rownum, num_siret
10 From Dirtydata
11 Where num_siret Is not null
12 And num_siret != '00000000000000'
13 And Length(num_siret) = 14
14 And Translate(num_siret, '#0123456789','#') Is Null
15 ), Generator As ( -- pour multiplier les enregistrements
16 Select rownum rn
17 From Dual
18 Connect By Level <= 14
19 Order By rn
20 ), Digits As ( -- le produit cartésien
21 Select num_siret, rn,
22 SubStr(num_siret, -rn, 1) Digit -- on commence par la fin de la chaîne
23 From Data
24 Cross Join
25 Generator
26 ), LuhnFormula As (
27 Select num_siret, rn, Digit,
28 Case BitAnd(rn, 1) -- position pair/impair
29 When 0 Then
30 Translate(Digit,'0123456789','0246813579') -- formule de Luhn
31 Else
32 Digit
33 End LuhnDigits
34 From Digits
35 )
36 Select num_siret,
37 case Mod(Sum(LuhnDigits),10) -- le test de Luhn
38 When 0 Then
39 'OK'
40 Else
41 'KO'
42 End Status
43 From LuhnFormula
44 Group By num_siret
45 Order by status
46 /
NUM_SIRET STATUS
-------------- ------
37282932000074 KO
73282932000074 OK
SQL> |
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