Mysql group by multiple combinations
0
I'm building a chat app in which two people will comunicate on enquiry, I want to fetch conversation between two users on enquiry, table structure is like below:
Table: enquiries
id, name, product, msg
Table: replies
id, enquiry_id(fk), from_user(fk), to_user(fk), msg
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
What I'm doing
I'm using using below query to fetch communication between two users on the basis of enquiries but it is giving two seperate records for same users & enquiry.
SELECT
r.enquiry_id,
r.from_user,
r.to_user,
count(1) replies_count
FROM
`replies` r
GROUP BY
r.enquiry_id, r.from_user, r.to_user
ORDER BY
r.id DESC
This is the result of the above query
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
And my expected result is like
+--------+--------------+--------------+-----+
| enq_id | participant1 | participant2 | msg |
+--------+--------------+--------------+-----+
| 1 | 1 | 2 | 4 |
+--------+--------------+--------------+-----+
| 1 | 1 | 3 | 2 |
+--------+--------------+--------------+-----+
mysql group-by
asked Nov 29 '16 at 13:06
Ramesh MhetreRamesh Mhetre
1012
bumped to the homepage by Community♦ 14 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 |
0
I'm building a chat app in which two people will comunicate on enquiry, I want to fetch conversation between two users on enquiry, table structure is like below:
Table: enquiries
id, name, product, msg
Table: replies
id, enquiry_id(fk), from_user(fk), to_user(fk), msg
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
What I'm doing
I'm using using below query to fetch communication between two users on the basis of enquiries but it is giving two seperate records for same users & enquiry.
SELECT
r.enquiry_id,
r.from_user,
r.to_user,
count(1) replies_count
FROM
`replies` r
GROUP BY
r.enquiry_id, r.from_user, r.to_user
ORDER BY
r.id DESC
This is the result of the above query
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
And my expected result is like
+--------+--------------+--------------+-----+
| enq_id | participant1 | participant2 | msg |
+--------+--------------+--------------+-----+
| 1 | 1 | 2 | 4 |
+--------+--------------+--------------+-----+
| 1 | 1 | 3 | 2 |
+--------+--------------+--------------+-----+
mysql group-by
asked Nov 29 '16 at 13:06
Ramesh MhetreRamesh Mhetre
1012
bumped to the homepage by Community♦ 14 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
1
can be more than two distinct users in the conversation?
– McNets
Nov 29 '16 at 13:50
There will be single row for two users communicating on same enquiry, I've modified my question please check
– Ramesh Mhetre
Nov 30 '16 at 5:01
add a comment |
0
0
0
I'm building a chat app in which two people will comunicate on enquiry, I want to fetch conversation between two users on enquiry, table structure is like below:
Table: enquiries
id, name, product, msg
Table: replies
id, enquiry_id(fk), from_user(fk), to_user(fk), msg
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
What I'm doing
I'm using using below query to fetch communication between two users on the basis of enquiries but it is giving two seperate records for same users & enquiry.
SELECT
r.enquiry_id,
r.from_user,
r.to_user,
count(1) replies_count
FROM
`replies` r
GROUP BY
r.enquiry_id, r.from_user, r.to_user
ORDER BY
r.id DESC
This is the result of the above query
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
And my expected result is like
+--------+--------------+--------------+-----+
| enq_id | participant1 | participant2 | msg |
+--------+--------------+--------------+-----+
| 1 | 1 | 2 | 4 |
+--------+--------------+--------------+-----+
| 1 | 1 | 3 | 2 |
+--------+--------------+--------------+-----+
mysql group-by
asked Nov 29 '16 at 13:06
Ramesh MhetreRamesh Mhetre
1012
I'm building a chat app in which two people will comunicate on enquiry, I want to fetch conversation between two users on enquiry, table structure is like below:
Table: enquiries
id, name, product, msg
Table: replies
id, enquiry_id(fk), from_user(fk), to_user(fk), msg
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
What I'm doing
I'm using using below query to fetch communication between two users on the basis of enquiries but it is giving two seperate records for same users & enquiry.
SELECT
r.enquiry_id,
r.from_user,
r.to_user,
count(1) replies_count
FROM
`replies` r
GROUP BY
r.enquiry_id, r.from_user, r.to_user
ORDER BY
r.id DESC
This is the result of the above query
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
And my expected result is like
+--------+--------------+--------------+-----+
| enq_id | participant1 | participant2 | msg |
+--------+--------------+--------------+-----+
| 1 | 1 | 2 | 4 |
+--------+--------------+--------------+-----+
| 1 | 1 | 3 | 2 |
+--------+--------------+--------------+-----+
mysql group-by
mysql group-by
asked Nov 29 '16 at 13:06
Ramesh MhetreRamesh Mhetre
1012
asked Nov 29 '16 at 13:06
Ramesh MhetreRamesh Mhetre
1012
edited Nov 30 '16 at 4:56
Ramesh Mhetre
asked Nov 29 '16 at 13:06
Ramesh MhetreRamesh Mhetre
1012
asked Nov 29 '16 at 13:06
Ramesh MhetreRamesh Mhetre
1012
asked Nov 29 '16 at 13:06
Ramesh MhetreRamesh Mhetre
1012
1012
bumped to the homepage by Community♦ 14 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♦ 14 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
1
can be more than two distinct users in the conversation?
– McNets
Nov 29 '16 at 13:50
There will be single row for two users communicating on same enquiry, I've modified my question please check
– Ramesh Mhetre
Nov 30 '16 at 5:01
add a comment |
1
can be more than two distinct users in the conversation?
– McNets
Nov 29 '16 at 13:50
There will be single row for two users communicating on same enquiry, I've modified my question please check
– Ramesh Mhetre
Nov 30 '16 at 5:01
1
1
can be more than two distinct users in the conversation?
– McNets
Nov 29 '16 at 13:50
can be more than two distinct users in the conversation?
– McNets
Nov 29 '16 at 13:50
There will be single row for two users communicating on same enquiry, I've modified my question please check
– Ramesh Mhetre
Nov 30 '16 at 5:01
There will be single row for two users communicating on same enquiry, I've modified my question please check
– Ramesh Mhetre
Nov 30 '16 at 5:01
add a comment |
1 Answer
1
active
oldest
votes
0
check it here if it is what you're asking for: http://rextester.com/TVOKS20933
select enquiry_id, from_user, to_user, count(1) msg
from replies
group by enquiry_id, from_user, to_user
order by id;
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
answered Nov 29 '16 at 14:14
McNetsMcNets
16.3k42161
This what is I'm doing right now, I want only one row for communication between two users. I have modified my question, please check
– Ramesh Mhetre
Nov 30 '16 at 5:00
add a comment |
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0
check it here if it is what you're asking for: http://rextester.com/TVOKS20933
select enquiry_id, from_user, to_user, count(1) msg
from replies
group by enquiry_id, from_user, to_user
order by id;
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
answered Nov 29 '16 at 14:14
McNetsMcNets
16.3k42161
This what is I'm doing right now, I want only one row for communication between two users. I have modified my question, please check
– Ramesh Mhetre
Nov 30 '16 at 5:00
add a comment |
0
check it here if it is what you're asking for: http://rextester.com/TVOKS20933
select enquiry_id, from_user, to_user, count(1) msg
from replies
group by enquiry_id, from_user, to_user
order by id;
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
answered Nov 29 '16 at 14:14
McNetsMcNets
16.3k42161
This what is I'm doing right now, I want only one row for communication between two users. I have modified my question, please check
– Ramesh Mhetre
Nov 30 '16 at 5:00
add a comment |
0
0
0
check it here if it is what you're asking for: http://rextester.com/TVOKS20933
select enquiry_id, from_user, to_user, count(1) msg
from replies
group by enquiry_id, from_user, to_user
order by id;
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
answered Nov 29 '16 at 14:14
McNetsMcNets
16.3k42161
check it here if it is what you're asking for: http://rextester.com/TVOKS20933
select enquiry_id, from_user, to_user, count(1) msg
from replies
group by enquiry_id, from_user, to_user
order by id;
+----+--------+-----------+---------+------+
| id | enq_id | from_user | to_user | msg |
+----+--------+-----------+---------+------+
| 1 | 1 | 1 | 2 | msg1 |
+----+--------+-----------+---------+------+
| 2 | 1 | 2 | 1 | msg2 |
+----+--------+-----------+---------+------+
| 3 | 1 | 1 | 2 | msg3 |
+----+--------+-----------+---------+------+
| 4 | 1 | 2 | 1 | msg4 |
+----+--------+-----------+---------+------+
| 5 | 1 | 1 | 3 | msg1 |
+----+--------+-----------+---------+------+
| 6 | 1 | 3 | 1 | msg2 |
+----+--------+-----------+---------+------+
+--------+-----------+---------+-----+
| enq_id | from_user | to_user | msg |
+--------+-----------+---------+-----+
| 1 | 1 | 2 | 2 |
+--------+-----------+---------+-----+
| 1 | 2 | 1 | 2 |
+--------+-----------+---------+-----+
| 1 | 1 | 3 | 1 |
+--------+-----------+---------+-----+
| 1 | 3 | 1 | 1 |
+--------+-----------+---------+-----+
answered Nov 29 '16 at 14:14
McNetsMcNets
16.3k42161
edited Nov 29 '16 at 14:22
answered Nov 29 '16 at 14:14
McNetsMcNets
16.3k42161
answered Nov 29 '16 at 14:14
McNetsMcNets
16.3k42161
answered Nov 29 '16 at 14:14
McNetsMcNets
16.3k42161
16.3k42161
This what is I'm doing right now, I want only one row for communication between two users. I have modified my question, please check
– Ramesh Mhetre
Nov 30 '16 at 5:00
add a comment |
This what is I'm doing right now, I want only one row for communication between two users. I have modified my question, please check
– Ramesh Mhetre
Nov 30 '16 at 5:00
This what is I'm doing right now, I want only one row for communication between two users. I have modified my question, please check
– Ramesh Mhetre
Nov 30 '16 at 5:00
This what is I'm doing right now, I want only one row for communication between two users. I have modified my question, please check
– Ramesh Mhetre
Nov 30 '16 at 5:00
add a comment |
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1
can be more than two distinct users in the conversation?
– McNets
Nov 29 '16 at 13:50
There will be single row for two users communicating on same enquiry, I've modified my question please check
– Ramesh Mhetre
Nov 30 '16 at 5:01