MySQL加入和聯盟優化

Question

我有這個SQL，它像它的想法，但我想有一個更好的方式來寫它，以避免重複的句子，並提高性能。

有什麼建議嗎？

CREATE OR REPLACE VIEW tx_oriconvocatorias_consultas AS 
SELECT pubs.*, pais.nombre_es as area, 
GROUP_CONCAT(DISTINCT linea_es ORDER BY linea_es SEPARATOR '\n') as linea_es, 
GROUP_CONCAT(DISTINCT modalidad_es ORDER BY modalidad_es SEPARATOR '\n') as modalidad_es, 
GROUP_CONCAT(DISTINCT orgs.nombre_es ORDER BY orgs.nombre_es SEPARATOR '\n') as organizacion_es 
FROM tx_oriconvocatorias_publicadas AS pubs 

INNER JOIN tx_oriconvocatorias_publicadas_lineas_mm as ml 
ON ml.uid_local=pubs.uid 

INNER JOIN tx_oritablascomunes_lineas as lins 
ON ml.uid_foreign=lins.uid 

INNER JOIN tx_oriconvocatorias_publicadas_modalidades_mm as mm 
ON mm.uid_local=pubs.uid 

INNER JOIN tx_oritablascomunes_modalidades as mods 
ON mm.uid_foreign=mods.uid 

INNER JOIN tx_oriconvocatorias_publicadas_organizaciones_mm as mo 
ON mo.uid_local=pubs.uid 

INNER JOIN tx_oritablascomunes_organizaciones as orgs 
ON mo.uid_foreign=orgs.uid 

INNER JOIN tx_oritablascomunes_paises AS pais 
ON pubs.carea = CONCAT('tx_oritablascomunes_paises_',pais.uid) 
GROUP BY uid 

UNION 

SELECT pubs.*, regs.nombre_es as area, 
GROUP_CONCAT(DISTINCT linea_es ORDER BY linea_es SEPARATOR '\n') as linea_es, 
GROUP_CONCAT(DISTINCT modalidad_es ORDER BY modalidad_es SEPARATOR '\n') as modalidad_es, 
GROUP_CONCAT(DISTINCT orgs.nombre_es ORDER BY orgs.nombre_es SEPARATOR '\n') as organizacion_es 

FROM tx_oriconvocatorias_publicadas AS pubs 

INNER JOIN tx_oriconvocatorias_publicadas_lineas_mm as ml 
ON ml.uid_local=pubs.uid 

INNER JOIN tx_oritablascomunes_lineas as lins 
ON ml.uid_foreign=lins.uid 

INNER JOIN tx_oriconvocatorias_publicadas_modalidades_mm as mm 
ON mm.uid_local=pubs.uid 

INNER JOIN tx_oritablascomunes_modalidades as mods 
ON mm.uid_foreign=mods.uid 

INNER JOIN tx_oriconvocatorias_publicadas_organizaciones_mm as mo 
ON mo.uid_local=pubs.uid 

INNER JOIN tx_oritablascomunes_organizaciones as orgs 
ON mo.uid_foreign=orgs.uid 

INNER JOIN tx_oritablascomunes_regiones AS regs 
ON pubs.carea = CONCAT('tx_oritablascomunes_regiones_',regs.uid) 
GROUP BY uid 

Answer 1

是的。使用視圖來所有常見的SQL收集多達兩個查詢：

CREATE VIEW PUB_ORGS AS 
SELECT * 
FROM tx_oriconvocatorias_publicadas AS pubs 
INNER JOIN tx_oriconvocatorias_publicadas_lineas_mm as ml ON ml.uid_local=pubs.uid 
INNER JOIN tx_oritablascomunes_lineas as lins ON ml.uid_foreign=lins.uid 
INNER JOIN tx_oriconvocatorias_publicadas_modalidades_mm as mm ON mm.uid_local=pubs.uid 
INNER JOIN tx_oritablascomunes_modalidades as mods ON mm.uid_foreign=mods.uid 
INNER JOIN tx_oriconvocatorias_publicadas_organizaciones_mm as mo ON mo.uid_local=pubs.uid 
INNER JOIN tx_oritablascomunes_organizaciones as orgs ON mo.uid_foreign=orgs.uid; 

然後從這個