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我有2个表:项目和它们的价格。有些项目没有价格。我如何将价格加入商品,如果找不到商品匹配,请将其价格值设为0? P.S.SQLite LEFT JOIN ELSE
items (id INTEGER PRIMARY KEY, imgurl text, defindex int, name text)
prices (id INTEGER PRIMARY KEY, defindex int, quality int, effect int, currency text, price real