60 lines
1.3 KiB
SQL
60 lines
1.3 KiB
SQL
DELIMITER $$
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CREATE OR REPLACE DEFINER=`vn`@`localhost` PROCEDURE `vn`.`client_RandomList`(vNumber INT)
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BEGIN
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DECLARE i INT DEFAULT 0;
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DECLARE c INT DEFAULT 0;
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DECLARE maxClientFk INT;
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DROP TEMPORARY TABLE IF EXISTS tmp.client;
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CREATE TEMPORARY TABLE tmp.`client`
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(id INT AUTO_INCREMENT,
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clientFk INT,
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isSelected TINYINT(1) NOT NULL DEFAULT 0,
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PRIMARY KEY(id),
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UNIQUE KEY clientFk (clientFk))
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ENGINE = MEMORY;
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INSERT INTO tmp.client(clientFk)
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SELECT DISTINCT clientFk
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FROM vn.invoiceOut
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WHERE issued > TIMESTAMPADD(MONTH, -2, util.VN_CURDATE());
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SELECT max(id) INTO maxClientFk
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FROM tmp.client;
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WHILE i < vNumber DO
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SET i = i + 1;
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WHILE c = 0 DO
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SELECT id INTO c
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FROM tmp.client
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WHERE id = floor(RAND() * maxClientFk) + 1
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AND isSelected = FALSE
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LIMIT 1;
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END WHILE;
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-- SELECT i, maxClientFk, c;
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UPDATE tmp.client
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SET isSelected = TRUE
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WHERE id = c;
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SET c = 0;
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END WHILE;
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SELECT c.id, c.name FROM tmp.client tc
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JOIN vn.client c ON c.id = tc.clientFk
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WHERE isSelected
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ORDER BY clientFk;
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END$$
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DELIMITER ;
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