如果值包含SQL查询中的信息，则显示自定义数据

如果值包含以下信息，我将尝试显示“是”：

这里我有一个与id_order建立关系的re：

LEFT JOIN ps_surchage_eq_orders re ON a.`id_order`=re.`id_order`

如果当前id_订单中有任何与此关系相关的数据，则可以显示值YES

    SELECT SQL_CALC_FOUND_ROWS DISTINCT a.`id_order`, a.`invoice_number` AS num_factura,a.`delivery_number` AS num_albaran,a.`reference`, CONCAT(c.`firstname`, ' ', c.`lastname`) AS `customer`, c.email, addr.dni, gr.name AS group_name, a.total_discounts_tax_excl,a.total_paid_real, re.`id_order` AS RE, a.`payment`, a.`date_add` AS `date_add` , a.id_currency, a.id_order AS id_pdf, osl.`name` AS `osname`, IF((SELECT so.id_order 

FROM `ps_orders` so 

WHERE so.id_customer = a.id_customer AND so.id_order < a.id_order LIMIT 1) > 0, 0, 1) as new, country_lang.name as cname, IF(a.valid, 1, 0) badge_success 

FROM `ps_orders` a 

LEFT JOIN `ps_customer` c ON (c.`id_customer` = a.`id_customer`) 

LEFT JOIN `ps_address` address ON address.id_address = a.id_address_delivery 

LEFT JOIN `ps_country` country ON address.id_country = country.id_country 

LEFT JOIN `ps_country_lang` country_lang ON (country.`id_country` = country_lang.`id_country` AND country_lang.`id_lang` = 1) 

LEFT JOIN `ps_order_state` os ON (os.`id_order_state` = a.`current_state`) 

LEFT JOIN `ps_order_state_lang` osl ON (os.`id_order_state` = osl.`id_order_state` AND osl.`id_lang` = 1) 

LEFT JOIN `ps_address` addr ON (c.id_customer=addr.id_customer) 

LEFT JOIN ps_group_lang gr ON c.id_default_group=gr.id_group AND gr.id_lang=a.id_lang  

LEFT JOIN ps_surchage_eq_orders re ON a.`id_order`=re.`id_order` 

WHERE 1 

ORDER BY a.`id_order` DESC

谢谢

如果re.id\u订单为空，则将re.id\u订单替换为re，'YES'，'NO'作为re

---

如果ps_surchage_eq_orders没有该id_order，它将为空，If将返回YES，如果有，它将不为空，并返回NO

添加一些示例数据和预期的ResultId order name order行示例，在行中重新显示YES如果ps_surchage_eq_orders表中有id order，最后一个表是OrdersHanks！！！！但是我改变了是和否的顺序，因为当值为空时，我显示的是，我很乐意提供帮助。我理解错了，如果您想在值为空或不为空时显示“是”。

SELECT SQL_CALC_FOUND_ROWS DISTINCT a.`id_order`, a.`invoice_number` AS num_factura,a.`delivery_number` AS num_albaran,a.`reference`, CONCAT(c.`firstname`, ' ', c.`lastname`) AS `customer`, c.email, addr.dni, gr.name AS group_name, a.total_discounts_tax_excl,a.total_paid_real, IF(re.`id_order` IS NULL, 'YES', 'NO' ), a.`payment`, a.`date_add` AS `date_add` , a.id_currency, a.id_order AS id_pdf, osl.`name` AS `osname`, IF((SELECT so.id_order 

FROM `ps_orders` so 

WHERE so.id_customer = a.id_customer AND so.id_order < a.id_order LIMIT 1) > 0, 0, 1) as new, country_lang.name as cname, IF(a.valid, 1, 0) badge_success 

FROM `ps_orders` a 

LEFT JOIN `ps_customer` c ON (c.`id_customer` = a.`id_customer`) 

LEFT JOIN `ps_address` address ON address.id_address = a.id_address_delivery 

LEFT JOIN `ps_country` country ON address.id_country = country.id_country 

LEFT JOIN `ps_country_lang` country_lang ON (country.`id_country` = country_lang.`id_country` AND country_lang.`id_lang` = 1) 

LEFT JOIN `ps_order_state` os ON (os.`id_order_state` = a.`current_state`) 

LEFT JOIN `ps_order_state_lang` osl ON (os.`id_order_state` = osl.`id_order_state` AND osl.`id_lang` = 1) 

LEFT JOIN `ps_address` addr ON (c.id_customer=addr.id_customer) 

LEFT JOIN ps_group_lang gr ON c.id_default_group=gr.id_group AND gr.id_lang=a.id_lang  

LEFT JOIN ps_surchage_eq_orders re ON a.`id_order`=re.`id_order` 

WHERE 1 

ORDER BY a.`id_order` DESC