如何使用案例加入 SQL 查询

Question

我有一个查询 select 的案例

select 
    so.name,
    rp.name,
    CASE WHEN sp.delivery_type = 'direct' THEN true ELSE false END as is_direct,
    CASE WHEN sp.origin ilike 'Return%' THEN true ELSE false END as is_from_return_doc,
    jsonb_agg(
        json_build_object(
            'id', sm.id,
            'product_id', pp.id,
            'product_sku', pt.default_code,
            'product_name', pt.name,
            'image_url', CASE WHEN ir.store_fname IS NOT NULL THEN CONCAT('{}', ir.store_fname) ELSE '' END,
            'quantity', sm.product_uom_qty,
            'uom', json_build_object(
                'id', sm_uom.id,
                'name', sm_uom.name,
                'factor', sm_uom.factor,
                'barcode', piu.barcode
            )
        )
    ) as items
from sale_order so
JOIN res_partner rp on
    so.partner_id = rp.id
JOIN stock_picking sp ON
    CASE 
        WHEN sp.sale_id = so.id and sp.origin = so.name and sp.state in ('done') THEN
            sp.sale_id = so.id
        WHEN sp.sale_id = so.id and sp.origin ilike 'Return%' and sp.state not in ('cancel', 'done') THEN
            sp.sale_id = so.id
    END
JOIN stock_move sm on
    sm.picking_id = sp.id
JOIN product_product pp on
    sm.product_id = pp.id
JOIN product_template pt on
    pp.product_tmpl_id = pt.id
JOIN product_uom sm_uom ON
    sm.product_uom = sm_uom.id
LEFT JOIN product_identity_uom piu ON
    piu.product_id = pt.id 
    AND piu.uom_id = sm.product_uom
LEFT JOIN ir_attachment ir ON
    ir.res_id = pt.id
    and ir.res_model = 'product.template'
    and ir.res_field = 'image'
WHERE
    so.name = 'SO503251'
GROUP BY
    so.id, rp.id, sp.id

在这部分，如果第二个条件为真，我希望最后一个条件替换第一个条件，但它总是转到第一个条件..

因此，如果我们找到“返回”，它将替换第一个条件，.. 我试图让它嵌套条件以防万一但没有用.. 有人可以帮忙吗？

CASE 
    WHEN sp.sale_id = so.id and sp.origin = so.name and sp.state in ('done') THEN
        sp.sale_id = so.id
    WHEN sp.sale_id = so.id and sp.origin ilike 'Return%' and sp.state not in ('cancel', 'done') THEN
        sp.sale_id = so.id
END

谢谢

Answer 1

我推测你想要这样的逻辑：

ON sp.sale_id = so.id and
   (sp.origin = so.name and sp.state in ('done') or
    sp.origin ilike 'Return%' and sp.state not in ('cancel', 'done') 
   )