I meet an issue with a recursive CTE.
The error message is :
[Exception, Error code 1 146, SQLState 42S02] Table 'mysql.gen_lignes' doesn't exist
Line 3, column 1
Here is the query (which works fine on PostgreSQL). Thank's a lot for you help :
-- tableau d'amortissement d'immobilisation
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WITH
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tmp_valinitiales (capital, taux, annee_depart, nb_mois_an1, nb_annuites) AS (
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SELECT CAST(100000 AS DECIMAL(11, 0)), -- capital initial
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CAST((10+0.0) / 100 AS DECIMAL(5, 2)), -- taux d'amortissment
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CAST(2001 AS INTEGER), -- année de départ
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CAST(6 AS INTEGER), -- nbre mois pour calcul 1ère annuitée
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CAST(10 AS INTEGER) -- nombre d'années d'amortissement
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),
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-- Conversion de certaines valeurs initiales en format décimal et précalcul de certaines données
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tmp_valdepart (capital, taux, annee_depart, nb_mois_an1, prorata, nb_annuites) AS (
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SELECT capital, taux, annee_depart, nb_mois_an1,
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CAST( CAST(nb_mois_an1 AS DEC(2, 0)) / 12.0 AS DEC(5, 4)) as prorata, -- prorata de la première annuité au format décimal
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CASE WHEN nb_mois_an1 = 12 THEN nb_annuites ELSE nb_annuites + 1 END AS nb_annuites -- nombre d'années d'amortissement de type entier
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FROM tmp_valinitiales
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),
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-- Génération des lignes du tableau
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gen_lignes AS (
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SELECT cast(nx as integer) as val_inc FROM (
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WITH RECURSIVE gen_lignes(nx) AS (
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SELECT 1 as n1
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UNION ALL
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SELECT nx+1 as n2 FROM gen_lignes WHERE nx < (SELECT nb_annuites FROM tmp_valdepart)
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) SELECT nx FROM gen_lignes
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) AS X
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),
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-- Calcul d'un premier tableau d'annuités théoriques
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tmp_tableau1 as (
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SELECT val_inc, (SELECT taux FROM tmp_valdepart) AS taux,
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(SELECT capital FROM tmp_valdepart) AS capital_initial,
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CASE WHEN val_inc = 1 THEN
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-- la première année n'est pas forcément une année pleine, d'où application d'un prorata temporis sur la mensualité
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(SELECT capital FROM tmp_valdepart) * (SELECT taux FROM tmp_valdepart) * (SELECT prorata FROM tmp_valdepart)
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ELSE
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-- mensualité théorique pour une année pleine
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(SELECT capital FROM tmp_valdepart) * (SELECT taux FROM tmp_valdepart)
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END AS annuites
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FROM gen_lignes
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),
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-- Second tableau théorique incluant le calcul du CRD
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tmp_tableau2 AS (
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SELECT a.val_inc, a.capital_initial, a.annuites,
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a.capital_initial - (SELECT SUM(annuites) FROM tmp_tableau1 x WHERE x.val_inc <= a.val_inc) AS crd
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FROM tmp_tableau1 a
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)
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SELECT *
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FROM tmp_tableau1
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;
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Thanks for the report and test case.
I'm not sure whether it's the same problem as
MDEV-13780, I'll leave it to igor to decide.Here is a simplified version of the same query:
WITH
),
)
MariaDB 10.2 result
PostgreSQL 9.6 result
n
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