如何用group by和函数更新表？

Question

我正在尝试更新Postgresql中的一些列但我已经意识到有一些GROUP BY并且有条件和总和功能。 select语句：

SELECT mp.name , mbl.product_id, "produced",sum(round(mbl.product_qty*smp.product_uom_qty/mb.product_qty,3)) "theo" ,sum(round(smc.product_uom_qty,3)) "real"
FROM stock_move smp LEFT JOIN mrp_production mp ON (mp.id=smp.production_id and smp.state in('done','cancel') ) 
LEFT JOIN stock_move smc on  mp.id=smc.raw_material_production_id 
LEFT JOIN mrp_bom mb ON mb.id=mp.bom_id LEFT JOIN mrp_bom_line mbl ON mbl.bom_id=mb.id
WHERE smc.product_id=mbl.product_id  and mp.state='done'
GROUP BY mp.name,mbl.product_id  having sum(round(mbl.product_qty*smp.product_uom_qty/mb.product_qty,3))!=sum(round(smc.product_uom_qty,3))

我想更新一下

stock_move.product_uom_qty=sum(mbl.product_qty*smp.product_uom_qty/mb.product_qty)

我试过这个：

UPDATE stock_move sm SET product_uom_qty=sum(mbl.product_qty*smp.product_uom_qty/mb.product_qty )
FROM stock_move smp  LEFT JOIN mrp_production mp ON (mp.id=smp.production_id and smp.state in('done','cancel') ) 
LEFT JOIN mrp_bom mb ON mb.id=mp.bom_id LEFT JOIN mrp_bom_line mbl ON mbl.bom_id=mb.id  LEFT JOIN stock_move smc ON  mp.id=smc.raw_material_production_id  
GROUP BY mp.name,mbl.product_id 
HAVING SUM(round(mbl.product_qty*smp.product_uom_qty/mb.product_qty,3))!=SUM(round(smc.product_uom_qty,3)))
WHERE sm.product_id=smc.product_id

我有：

ERROR:  syntax error at or near "group"
LINE 4: group by mp.name,mbl.product_id 

Answer 1

我通过使用WITH AS作为以下查询解决了它

WITH tabpro AS (
SELECT smc.id,mp.name AS name, mbl.product_id ,sum(smp.product_uom_qty) "produced",sum(round(mbl.product_qty*smp.product_uom_qty/mb.product_qty,3)) AS realqty ,sum(round(smc.product_uom_qty,3))  "REAl" --,mbl.product_uom,smc.product_uom
FROM stock_move smp LEFT JOIN mrp_production mp ON (mp.id=smp.production_id AND smp.state in('done','cancel') ) LEFT JOIN stock_move smc ON  mp.id=smc.raw_material_production_id  
LEFT JOIN mrp_bom mb ON mb.id=mp.bom_id LEFT JOIN mrp_bom_line mbl ON mbl.bom_id=mb.id  
WHERE  smc.product_id=mbl.product_id  AND mp.state='done' --and mp.name like '%207'
GROUP BY smc.id, mp.name,mbl.product_id 
HAVING sum(round(mbl.product_qty*smp.product_uom_qty/mb.product_qty,3))!=sum(round(smc.product_uom_qty,3))
) 
UPDATE stock_move sm SET product_uom_qty=tabpro.realqty FROM tabpro
WHERE sm.product_id=tabpro.product_id AND sm.name=tabpro.name AND sm.id=tabpro.id;