SQL where條件和jion　on條件的詳解及區別

sql 語句中where條件和jion　on條件的區別

與有很大的差別，請注意！

SELECT TBL_SchemaDetail.MaterialNo, TBL_StockMaterial.SalePrice 
FROM TBL_StockMaterial RIGHT OUTER JOIN 
   TBL_SchemaDetail ON 
   TBL_StockMaterial.MaterialNo = TBL_SchemaDetail.MaterialNo AND 
   TBL_SchemaDetail.SchemaNo = '7411' AND TBL_StockMaterial.SalePrice = 0 

條件全部放到join的on中。

SELECT TBL_SchemaDetail.MaterialNo, TBL_StockMaterial.SalePrice 
FROM TBL_StockMaterial RIGHT OUTER JOIN 
   TBL_SchemaDetail ON 
   TBL_StockMaterial.MaterialNo = TBL_SchemaDetail.MaterialNo 
WHERE (TBL_SchemaDetail.SchemaNo = '7411') AND (TBL_StockMaterial.SalePrice = 0) 

連接和條件分開。

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