67 lines
1.8 KiB
PL/PgSQL
67 lines
1.8 KiB
PL/PgSQL
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CREATE OR REPLACE FUNCTION pieces_membre(int) RETURNS TABLE(id_piece int, quantite_piece int)
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AS
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$$
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SELECT id_piece, SUM(quantite_pieces_possedees) FROM (
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SELECT id_piece, quantite_contenir * quantite_enregistrer as quantite_pieces_possedees
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FROM enregistrer
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NATURAL JOIN boites
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NATURAL JOIN contenir
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WHERE id_membre=$1
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UNION
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(SELECT id_piece, quantite_acheter as quantite_pieces_possedees
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FROM acheter WHERE id_membre=$1)
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)
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GROUP BY id_piece
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$$
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LANGUAGE SQL;
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;
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CREATE OR REPLACE FUNCTION pieces_boite(int) RETURNS TABLE(id_piece int, quantite_piece int)
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AS
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$$
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(SELECT id_piece, quantite_contenir
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FROM contenir WHERE id_boite=$1);
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$$
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LANGUAGE SQL;
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;
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-- Liste des modèles faisables à partir d'un membre
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CREATE OR REPLACE FUNCTION modeles_faisables_membre(int) RETURNS TABLE(
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id_modele int
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) AS
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$$
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SELECT id_modele
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FROM modeles
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WHERE id_modele not IN
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(
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SELECT id_modele FROM (SELECT * FROM pieces_membre($1)) as pieces_possedees
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RIGHT OUTER JOIN (SELECT id_piece as id_necessaire, quantite_necessiter, id_modele
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FROM necessiter) as pieces_modeles
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ON pieces_possedees.id_piece = id_necessaire
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WHERE quantite_necessiter > quantite_piece OR quantite_piece IS NULL
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)
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$$
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LANGUAGE SQL;
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-- Liste des modèles faisables à partir d'une boite
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CREATE OR REPLACE FUNCTION modeles_faisables_boite(int) RETURNS TABLE(
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id_modele int
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) AS
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$$
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SELECT id_modele
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FROM modeles
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WHERE id_modele not IN
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(
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SELECT id_modele FROM (SELECT * FROM pieces_boite($1)) as pieces_possedees
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RIGHT OUTER JOIN (SELECT id_piece as id_necessaire, quantite_necessiter, id_modele
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FROM necessiter) as pieces_modeles
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ON pieces_possedees.id_piece = id_necessaire
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WHERE quantite_necessiter > quantite_piece OR quantite_piece IS NULL
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)
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$$
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LANGUAGE SQL;
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