34 lines
718 B
MySQL
34 lines
718 B
MySQL
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DELIMITER $$
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CREATE OR REPLACE DEFINER=`root`@`localhost` FUNCTION `vn`.`intrastat_estimateNet`(
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vSelf INT,
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vStems INT
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)
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RETURNS double
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DETERMINISTIC
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BEGIN
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/**
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* Calcula un valor neto estimado en función de
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* datos históricos de facturas intrastat.
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*
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* @param vSelf Id de intrastat
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* @param vStems Número de unidades
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* @return vNet
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*/
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DECLARE vNet DOUBLE;
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SELECT ROUND(vStems / (SUM(average) / COUNT(average)), 2) INTO vNet
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FROM (
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SELECT *, stems / net average
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FROM invoiceInIntrastat
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WHERE intrastatFk = vSelf
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AND net
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AND stems > 0
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ORDER BY dated DESC
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LIMIT 20
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) sub;
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RETURN vNet/2;
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END$$
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DELIMITER ;
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GRANT EXECUTE ON FUNCTION vn.intrastat_estimateNet TO administrative;
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