MariaDB - breaking up a multi join into CTEs
0
So I have the following query:
SELECT
i.mongodb_id
FROM
display_list_lists dll
JOIN
display_lists dl
ON
dll.display_list_id = dl._id
JOIN
list_items li
ON
dll.list_id = li.list_id
JOIN
items i
ON
li.item_id = i._id
WHERE
dl.mongodb_id = ?
AND
dl.account_id = ?
since, I only need the display_lists._id in order to then find the other details, would it be better to somehow use CTEs instead?
Broken up, it would look like this:
SELECT
_id
FROM
display_lists dl
WHERE
dl.mongodb_id = ?
AND
dl.account_id = ?;
SELECT
*
FROM
display_list_lists dll
WHERE
dll.display_list_id = ?; // previous _id
SELECT
*
FROM
list_items li
WHERE
li.list_id IN (?); // use list ids from previous results
SELECT
*
FROM
items i
WHERE
i._id IN (?); // use item ids from previous results
mysql join mariadb
asked 3 mins ago
A. LauA. Lau
1012
add a comment |
0
So I have the following query:
SELECT
i.mongodb_id
FROM
display_list_lists dll
JOIN
display_lists dl
ON
dll.display_list_id = dl._id
JOIN
list_items li
ON
dll.list_id = li.list_id
JOIN
items i
ON
li.item_id = i._id
WHERE
dl.mongodb_id = ?
AND
dl.account_id = ?
since, I only need the display_lists._id in order to then find the other details, would it be better to somehow use CTEs instead?
Broken up, it would look like this:
SELECT
_id
FROM
display_lists dl
WHERE
dl.mongodb_id = ?
AND
dl.account_id = ?;
SELECT
*
FROM
display_list_lists dll
WHERE
dll.display_list_id = ?; // previous _id
SELECT
*
FROM
list_items li
WHERE
li.list_id IN (?); // use list ids from previous results
SELECT
*
FROM
items i
WHERE
i._id IN (?); // use item ids from previous results
mysql join mariadb
asked 3 mins ago
A. LauA. Lau
1012
add a comment |
0
0
0
So I have the following query:
SELECT
i.mongodb_id
FROM
display_list_lists dll
JOIN
display_lists dl
ON
dll.display_list_id = dl._id
JOIN
list_items li
ON
dll.list_id = li.list_id
JOIN
items i
ON
li.item_id = i._id
WHERE
dl.mongodb_id = ?
AND
dl.account_id = ?
since, I only need the display_lists._id in order to then find the other details, would it be better to somehow use CTEs instead?
Broken up, it would look like this:
SELECT
_id
FROM
display_lists dl
WHERE
dl.mongodb_id = ?
AND
dl.account_id = ?;
SELECT
*
FROM
display_list_lists dll
WHERE
dll.display_list_id = ?; // previous _id
SELECT
*
FROM
list_items li
WHERE
li.list_id IN (?); // use list ids from previous results
SELECT
*
FROM
items i
WHERE
i._id IN (?); // use item ids from previous results
mysql join mariadb
asked 3 mins ago
A. LauA. Lau
1012
So I have the following query:
SELECT
i.mongodb_id
FROM
display_list_lists dll
JOIN
display_lists dl
ON
dll.display_list_id = dl._id
JOIN
list_items li
ON
dll.list_id = li.list_id
JOIN
items i
ON
li.item_id = i._id
WHERE
dl.mongodb_id = ?
AND
dl.account_id = ?
since, I only need the display_lists._id in order to then find the other details, would it be better to somehow use CTEs instead?
Broken up, it would look like this:
SELECT
_id
FROM
display_lists dl
WHERE
dl.mongodb_id = ?
AND
dl.account_id = ?;
SELECT
*
FROM
display_list_lists dll
WHERE
dll.display_list_id = ?; // previous _id
SELECT
*
FROM
list_items li
WHERE
li.list_id IN (?); // use list ids from previous results
SELECT
*
FROM
items i
WHERE
i._id IN (?); // use item ids from previous results
mysql join mariadb
mysql join mariadb
asked 3 mins ago
A. LauA. Lau
1012
asked 3 mins ago
A. LauA. Lau
1012
asked 3 mins ago
A. LauA. Lau
1012
asked 3 mins ago
A. LauA. Lau
1012
asked 3 mins ago
A. LauA. Lau
1012
1012
add a comment |
add a comment |
0
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