[英]what's wrong with my sql query
我希望它返回product_extrafield_id不為14的記錄,但它仍會在我的結果中返回它。
SELECT op. *
FROM
products_to_products_extra_fields AS p
INNER JOIN orders_products AS op ON p.products_id = op.products_id
INNER JOIN orders AS o ON op.orders_id = o.orders_id
WHERE NOT
EXISTS (
SELECT *
FROM products_to_products_extra_fields
WHERE
p.products_id = op.products_id
AND p.products_extra_fields_id = 14
)
AND o.date_purchased BETWEEN '2013-11-29' AND '2013-12-03 23:59:59'
AND o.payment_method = 'Institutional Billing'
AND o.orders_status <100001
GROUP BY o.orders_id
ORDER BY DECODE( o.cc_type, 'oFsAfHr7' ) ASC
LIMIT 0 , 30
如果我正確地閱讀了您的SQL,那么您就不需要NOT NOTISTS子句了。 只需用以下語句替換NOT EXISTS子句:p.products_extra_fields_id!= 14
SELECT
op. *
FROM
products_to_products_extra_fields AS p
INNER JOIN orders_products AS op
ON p.products_id = op.products_id
INNER JOIN orders AS o
ON op.orders_id = o.orders_id
WHERE
p.products_extra_fields_id != 14
AND o.date_purchased BETWEEN '2013-11-29' AND '2013-12-03 23:59:59'
AND o.payment_method = 'Institutional Billing'
AND o.orders_status <100001
GROUP BY o.orders_id
ORDER BY DECODE( o.cc_type, 'oFsAfHr7' ) ASC
LIMIT 0 , 30
為什么在不使用聚合函數的情況下進行分組? 另外,為什么要嘗試對不在您的SELECT中的字段進行GROUP BY? 我添加了DISTINCT運算符,並移動了邏輯。 您的子查詢使用的是來自主/外部查詢的條件。
SELECT DISTINCT o.cc_type, op.*
FROM orders_products AS op
INNER JOIN orders AS o
ON op.orders_id = o.orders_id
WHERE o.date_purchased BETWEEN '2013-11-29' AND '2013-12-03 23:59:59'
AND o.payment_method = 'Institutional Billing'
AND o.orders_status <100001
AND NOT EXISTS (SELECT *
FROM products_to_products_extra_fields AS p
WHERE p.products_id = op.products_id
AND p.products_extra_fields_id = 14)
ORDER BY DECODE( o.cc_type, 'oFsAfHr7' ) ASC
LIMIT 0 , 30;
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