复杂的mysql查询，将对2个表的结果进行排序

Question

I have to change an existing query and make it sort all results from 2 tables in 1 which is OK but there is something I am not sure if it can be done at all and how the query should look like. The problem is that I need to save in the temporary table with the results from both tables the name of specific field from both tables. Plese look at the attached screenshot for better understanding

I wish the results from both tables to be combined as shown in the Desired table. So far I have this query

SELECT `weddings_objects_lists`.`id`, 

weddings_objects_lists . object as description, weddings_objects_lists . date , weddings_objects_lists .qty FROM weddings_objects_lists WHERE weddings_objects_lists . wedding_id ='6'
union

 SELECT `weddings_schedules_lists`.`id`,  

`weddings_schedules_lists`.`schedule` as description, 

weddings_schedules_lists . date , weddings_schedules_lists .qty FROM weddings_schedules_lists WHERE weddings_schedules_lists . wedding_id ='6'

ORDER BY date ASC

I will really appreciate any help, Thanks

Answer 1

Try this:

(SELECT
    `weddings_objects_lists`.`id`, 
    `weddings_objects_lists`.`object` as description,  
    `weddings_objects_lists`.`date`, 
    `weddings_objects_lists`.`qty`,
    'object' as `type`
FROM `weddings_objects_lists`
WHERE `weddings_objects_lists`.`wedding_id` = '6'
UNION
SELECT 
    `weddings_schedules_lists`.`id`,  
    `weddings_schedules_lists`.`schedule` as `description`, 
    `weddings_schedules_lists`.`date`,
    `weddings_schedules_lists`.`qty`,
    'schedule' as `type`
FROM `weddings_schedules_lists`
WHERE `weddings_schedules_lists`.`wedding_id` = '6')
ORDER BY `date` ASC, `type`

You should wrap you union query with parentheses, and use fixed value as type, then do order by .