MySQL get previous row with inner join
In my query, I need to get the previous row with the current row and everything works fine here.
SELECT *,
(SELECT calendar_id
FROM calendar AS sub
WHERE sub.calendar_id < calendar.calendar_id
ORDER BY sub.calendar_id DESC
LIMIT 1) AS previous
FROM calendar
But now i need to join more two tables i using inner join for what.
SELECT *,
(SELECT calendar_id
FROM calendar AS sub
WHERE sub.calendar_id < calendar.calendar_id
ORDER BY sub.calendar_id DESC
LIMIT 1) AS previous
FROM calendar
INNER JOIN relationships
ON calendar.relation_id = relationships.relation_id
INNER JOIN customers
ON customers.customer_id = relationships.customer_id
WHERE relationships.user_id = '$user_id'
AND Date_format(calendar.date, '%m-%Y') = '$date'
ORDER BY calendar.date ASC
Here is my final query with inner joins, but that part about previous row now result is just mixed. How i can keep my previous row result good and have that data from other tables with inner join?
mysql join
asked Apr 18 '18 at 17:19
SkySonnySkySonny
1
bumped to the homepage by Community♦ 8 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
In my query, I need to get the previous row with the current row and everything works fine here.
SELECT *,
(SELECT calendar_id
FROM calendar AS sub
WHERE sub.calendar_id < calendar.calendar_id
ORDER BY sub.calendar_id DESC
LIMIT 1) AS previous
FROM calendar
But now i need to join more two tables i using inner join for what.
SELECT *,
(SELECT calendar_id
FROM calendar AS sub
WHERE sub.calendar_id < calendar.calendar_id
ORDER BY sub.calendar_id DESC
LIMIT 1) AS previous
FROM calendar
INNER JOIN relationships
ON calendar.relation_id = relationships.relation_id
INNER JOIN customers
ON customers.customer_id = relationships.customer_id
WHERE relationships.user_id = '$user_id'
AND Date_format(calendar.date, '%m-%Y') = '$date'
ORDER BY calendar.date ASC
Here is my final query with inner joins, but that part about previous row now result is just mixed. How i can keep my previous row result good and have that data from other tables with inner join?
mysql join
asked Apr 18 '18 at 17:19
SkySonnySkySonny
1
bumped to the homepage by Community♦ 8 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
What does "mixed" mean? Don't you get the results you want?
– ypercubeᵀᴹ
Apr 18 '18 at 17:36
If the problem is that sometimes the previous row isn't included in the result set, then you need to perform the joins with theprevioussub-query, as well as in the main query.
– RDFozz
Apr 18 '18 at 17:48
add a comment |
In my query, I need to get the previous row with the current row and everything works fine here.
SELECT *,
(SELECT calendar_id
FROM calendar AS sub
WHERE sub.calendar_id < calendar.calendar_id
ORDER BY sub.calendar_id DESC
LIMIT 1) AS previous
FROM calendar
But now i need to join more two tables i using inner join for what.
SELECT *,
(SELECT calendar_id
FROM calendar AS sub
WHERE sub.calendar_id < calendar.calendar_id
ORDER BY sub.calendar_id DESC
LIMIT 1) AS previous
FROM calendar
INNER JOIN relationships
ON calendar.relation_id = relationships.relation_id
INNER JOIN customers
ON customers.customer_id = relationships.customer_id
WHERE relationships.user_id = '$user_id'
AND Date_format(calendar.date, '%m-%Y') = '$date'
ORDER BY calendar.date ASC
Here is my final query with inner joins, but that part about previous row now result is just mixed. How i can keep my previous row result good and have that data from other tables with inner join?
mysql join
asked Apr 18 '18 at 17:19
SkySonnySkySonny
1
In my query, I need to get the previous row with the current row and everything works fine here.
SELECT *,
(SELECT calendar_id
FROM calendar AS sub
WHERE sub.calendar_id < calendar.calendar_id
ORDER BY sub.calendar_id DESC
LIMIT 1) AS previous
FROM calendar
But now i need to join more two tables i using inner join for what.
SELECT *,
(SELECT calendar_id
FROM calendar AS sub
WHERE sub.calendar_id < calendar.calendar_id
ORDER BY sub.calendar_id DESC
LIMIT 1) AS previous
FROM calendar
INNER JOIN relationships
ON calendar.relation_id = relationships.relation_id
INNER JOIN customers
ON customers.customer_id = relationships.customer_id
WHERE relationships.user_id = '$user_id'
AND Date_format(calendar.date, '%m-%Y') = '$date'
ORDER BY calendar.date ASC
Here is my final query with inner joins, but that part about previous row now result is just mixed. How i can keep my previous row result good and have that data from other tables with inner join?
mysql join
mysql join
asked Apr 18 '18 at 17:19
SkySonnySkySonny
1
asked Apr 18 '18 at 17:19
SkySonnySkySonny
1
asked Apr 18 '18 at 17:19
SkySonnySkySonny
1
asked Apr 18 '18 at 17:19
SkySonnySkySonny
1
asked Apr 18 '18 at 17:19
SkySonnySkySonny
1
1
bumped to the homepage by Community♦ 8 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 8 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
What does "mixed" mean? Don't you get the results you want?
– ypercubeᵀᴹ
Apr 18 '18 at 17:36
If the problem is that sometimes the previous row isn't included in the result set, then you need to perform the joins with theprevioussub-query, as well as in the main query.
– RDFozz
Apr 18 '18 at 17:48
add a comment |
What does "mixed" mean? Don't you get the results you want?
– ypercubeᵀᴹ
Apr 18 '18 at 17:36
If the problem is that sometimes the previous row isn't included in the result set, then you need to perform the joins with theprevioussub-query, as well as in the main query.
– RDFozz
Apr 18 '18 at 17:48
What does "mixed" mean? Don't you get the results you want?
– ypercubeᵀᴹ
Apr 18 '18 at 17:36
What does "mixed" mean? Don't you get the results you want?
– ypercubeᵀᴹ
Apr 18 '18 at 17:36
If the problem is that sometimes the previous row isn't included in the result set, then you need to perform the joins with the
previous sub-query, as well as in the main query.– RDFozz
Apr 18 '18 at 17:48
If the problem is that sometimes the previous row isn't included in the result set, then you need to perform the joins with the
previous sub-query, as well as in the main query.– RDFozz
Apr 18 '18 at 17:48
add a comment |
1 Answer
1
active
oldest
votes
Use that query as a 'derived table' to finish the task:
SELECT ...
FROM ( ... your query ... ) AS x
JOIN calendar AS prev_row ON prev_row.calendar_id = x.previous
...
(If you are using MySQL 8.0, there is a "windowing" way to get the previous id.)
answered May 5 '18 at 14:54
Rick JamesRick James
42k22258
add a comment |
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1 Answer
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active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Use that query as a 'derived table' to finish the task:
SELECT ...
FROM ( ... your query ... ) AS x
JOIN calendar AS prev_row ON prev_row.calendar_id = x.previous
...
(If you are using MySQL 8.0, there is a "windowing" way to get the previous id.)
answered May 5 '18 at 14:54
Rick JamesRick James
42k22258
add a comment |
Use that query as a 'derived table' to finish the task:
SELECT ...
FROM ( ... your query ... ) AS x
JOIN calendar AS prev_row ON prev_row.calendar_id = x.previous
...
(If you are using MySQL 8.0, there is a "windowing" way to get the previous id.)
answered May 5 '18 at 14:54
Rick JamesRick James
42k22258
add a comment |
Use that query as a 'derived table' to finish the task:
SELECT ...
FROM ( ... your query ... ) AS x
JOIN calendar AS prev_row ON prev_row.calendar_id = x.previous
...
(If you are using MySQL 8.0, there is a "windowing" way to get the previous id.)
answered May 5 '18 at 14:54
Rick JamesRick James
42k22258
Use that query as a 'derived table' to finish the task:
SELECT ...
FROM ( ... your query ... ) AS x
JOIN calendar AS prev_row ON prev_row.calendar_id = x.previous
...
(If you are using MySQL 8.0, there is a "windowing" way to get the previous id.)
answered May 5 '18 at 14:54
Rick JamesRick James
42k22258
answered May 5 '18 at 14:54
Rick JamesRick James
42k22258
answered May 5 '18 at 14:54
Rick JamesRick James
42k22258
answered May 5 '18 at 14:54
Rick JamesRick James
42k22258
42k22258
add a comment |
add a comment |
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What does "mixed" mean? Don't you get the results you want?
– ypercubeᵀᴹ
Apr 18 '18 at 17:36
If the problem is that sometimes the previous row isn't included in the result set, then you need to perform the joins with the
previoussub-query, as well as in the main query.– RDFozz
Apr 18 '18 at 17:48