Re: Union de consultas
SELECT
p.prod_id, p.prod_nombre,
group_concat( if(c.cod_id = 1, codprod_valor, null) ) AS Codigo1,
group_concat( if(c.cod_id = 2, codprod_valor, null) ) AS Codigo2,
group_concat( if(c.cod_id = 3, codprod_valor, null) ) AS Codigo3
FROM producto p
LEFT JOIN codprod cp ON p.prod_id=cp.prod_id
INNER JOIN codigo c ON cp.cod_id=c.cod_id
GROUP BY p.prod_id, p.prod_nombre;
"Pivot table basics: rows to columns",
https://www.artfulsoftware.com/infotree/queries.php
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April 20, 2020 11:45AM
231
April 20, 2020 01:35PM
195
April 26, 2020 06:45AM
Re: Union de consultas
211
April 27, 2020 01:26PM
177
April 27, 2020 02:05PM
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