19 lines
570 B
MySQL
19 lines
570 B
MySQL
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CREATE VIEW REGIONES_SINDESCUENTO(nombreRegion, cantidad)
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AS (
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SELECT nombre_region, COUNT(R2.rut_turista)
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FROM region R
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JOIN ciudad C ON (C.id_region = R.id_region)
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JOIN tour T ON (T.id_ciudad = C.id_ciudad)
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JOIN realiza R2 ON (R2.id_tour = T.id_tour)
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WHERE (
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EXISTS(SELECT fecha_llegada
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FROM asociado
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WHERE (id_tour = T.id_tour AND fecha_llegada BETWEEN '2018-11-01' AND '2018-11-30')
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) AND
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R2.id_descuento = 2
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)
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GROUP BY (R.nombre_region)
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);
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SELECT nombreRegion, cantidad FROM REGIONES_SINDESCUENTO ORDER BY cantidad DESC;
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