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What's wrong with this query?

SELECT ps_stock_available.quantity 
FROM ps_stock_available 
INNER JOIN ps_product_attribute ON ps_product_attribute.id_product ON ps_stock_available.id_product 
WHERE ps_product_attribute.reference =100102
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  • 2
    Two on clauses don't normally follow each other. Commented Nov 2, 2018 at 15:06

1 Answer 1

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2

I think you intend:

SELECT sa.quantity
FROM ps_stock_available sa INNER JOIN
     ps_product_attribute pa 
     ON sa.id_product = pa.id_product
WHERE pa.reference = 100102;

Notes:

  • Use table aliases. They make the query easier to write and to read.
  • The ON clause contains a boolean expression.
  • A single JOIN has a single ON clause.
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