選擇 2 個日期之間，但也選擇 NULL 值

Question

我正在嘗試運行一個查詢，在其中選擇 2 個值之間的日期

OR ( `order_products`.`deleted_at` BETWEEN
                 '2021-01-01 00:00:00' AND '2021-07-28 23:59:59' )

但我還需要收集具有 NULL 值的 order_products。

這完全可能嗎，就像我把

OR `order_products`.`deleted_at` IS NULL

在我的代碼中，它似乎只是返回數據庫中的絕對所有內容:-(

我當前的代碼，上下文是：

SELECT 
`orders`.`id`, 
`orders`.`reference`, 
`orders`.`order_date`, 
`orders`.`cancellation_date`,
 `order_products`.`description`, 
`order_products`.`st_code`, 
`order_products`.`supplier_stock_code`,
 `order_products`.`status`, 
`order_products`.`deleted_at`,
 `supplier`.`name`, 
 order_invoice.created_at AS credit_date, 
fitters.account_number AS fitter_account_number, 
fitters.name AS fitter 
FROM `order_products`
 LEFT JOIN `orders` ON (`orders`.`id` = `order_products`.`order_id`) 
LEFT JOIN `supplier` ON (`order_products`.`supplier_id` = `supplier`.`id`) 
LEFT JOIN `fitters` ON (`orders`.`fitter_id` = `fitters`.`id`) 
JOIN `order_invoice` ON (`order_invoice`.`order_id` = `orders`.`id`) 
WHERE `cancellation_date` IS null 
AND `cancellation_date` BETWEEN '2021-01-01 00:00:00' AND '2021-07-28 23:59:59'
 AND `order_invoice`.`status` = 'approved' 
OR (`order_products`.`deleted_at` BETWEEN '2021-01-01 00:00:00' 
OR `order_products`.`deleted_at` IS NULL
AND '2021-07-28 23:59:59') 
AND `order_products`.`product_type` = 'product' 
ORDER BY `orders`.`id` ASC

Answer 1

請嘗試將 where 條件更改為 WHERE cancellation_date空 AND cancellation_date BETWEEN '2021-01-01 00:00:00' AND '2021-07-28 23:59:59' AND order_invoice 。 status = 'approved' OR ( order_products deleted_at IS NULL OR order_products deleted_at BETWEEN '2021-01-01 00:00:00' AND '2021-07-28 23:59:59') AND order_products 。 product_type = '產品'

Answer 2

您的語法已關閉。 你需要：

WHERE order_products.deleted_at >= '2021-01-01' AND
      order_products.deleted_at <  '2021-07-29' OR
      order_products.deleted_at IS NULL

請注意，我使用日期不等式編寫了日期時間檢查，這對我來說似乎更清晰。 此外，我們在這里不需要任何額外的括號，因為AND優先級高於OR 。