I have a weird situation. I need to select all data from table name with distinct values from other table.
Here is database scheme of database that I need to get distinct values:
When I run both queries without INNER JOIN they run without error but when I use INNER JOIN I got error
This is query that I used:
SELECT * FROM `todo`
INNER JOIN
SELECT `task`.`status`,COUNT(*) as count FROM `task`
ON `todo`.`id`=`task`.`id_list` WHERE `todo`.`user_id` = 43
As you can see I need to get total count of status column from other table. Can it be done using one single query or do I need to run two querys to get data...
You need to wrap the join In parenthesis
SELECT td.*, t.*
FROM `todo` td
JOIN
( SELECT `status`, SUM(status=0) as status_0, SUM(status=1) as status_1 , id_list
FROM `task`
GROUP BY id_list
) t ON td.id= t.id_list
WHERE td.user_id = 43
You can do this in one query. Even without a subquery:
SELECT ta.status, COUNT(*) as count
FROM todo t INNER JOIN
task ta
ON t.id = ta.id_list
WHERE t.user_id = 43
GROUP BY ta.status;
EDIT:
If the above produces what you want, then you probably need:
SELECT t.*, ta.status, taa.cnt
FROM todo t INNER JOIN
task ta
ON t.id = ta.id_list INNER JOIN
(SELECT count(*) as cnt, ta.status
FROM task ta
GROUP BY ta.status
) taa
on ta.status = taa.status
WHERE t.user_id = 43 ;
You seem to want a summary at the status
level, which is only in task
. But you want the information at the row level for todo
.
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