25 lines
586 B
MySQL
25 lines
586 B
MySQL
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DELIMITER $$
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CREATE OR REPLACE DEFINER=`root`@`localhost` FUNCTION `vn`.`invoiceOutAmount`(vInvoiceRef VARCHAR(15))
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RETURNS decimal(10,2)
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NOT DETERMINISTIC
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READS SQL DATA
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BEGIN
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DECLARE totalAmount DECIMAL(10,2);
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SELECT SUM(vat) INTO totalAmount
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FROM (
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SELECT iot.vat
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FROM invoiceOutTax iot
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JOIN invoiceOut io ON io.id = iot.invoiceOutFk
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WHERE io.ref = vInvoiceRef
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UNION ALL
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SELECT ioe.amount
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FROM invoiceOutExpense ioe
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JOIN invoiceOut io ON io.id = ioe.invoiceOutFk
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WHERE io.ref = vInvoiceRef
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) t1;
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RETURN totalAmount;
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END$$
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DELIMITER ;
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