Have the following table which i am trying to concat two rows from the 'value' column into one
mysql> select * from table;
+-----+---------+----------+------------------------+
| id | rsvp_id | field_id | value |
+-----+---------+----------+------------------------+
| 181 | 37 | 1 | First |
| 184 | 37 | 4 | Last |
| 187 | 37 | 10 | |
| 190 | 37 | 13 | spicegirls |
| 193 | 37 | 7 | mark@test2.com |
| 196 | 40 | 1 | Brian |
| 199 | 40 | 1 | Smith |
| 202 | 40 | 7 | Brian@test .com |
| 205 | 40 | 10 | BBQ |
+-----+---------+----------+------------------------+
9 rows in set (0.00 sec)
Ideally i'd like to get the following result
rsvp_id | value
======== ========
37 First Last
40 Brian Smith
The query only grabs the rows with field_id=1 then concats the value column and creates a new row with rsvp_id and the concat value.
Also, the field_id column right now and the 1 is an example, i'll have to figure out how to make it work so instead of 1
it takes the condition from a different table.
Basically the above are values for first name and last name. field_id is a foreign_key to a different table.
I've tried searching online and messing with it myself but i wasn't able to merge the two rows into one row.
Thank You.
You have to use grouping and then use GROUP_CONCAT
.
Something like this (untested) might work:
SELECT rsvp_id, GROUP_CONCAT(value SEPARATOR ' ')
FROM t
WHERE field_id = 1
GROUP BY rsvp_id
See MySQL docs for details, also to learn about ordering of values etc: https://dev.mysql.com/doc/refman/8.0/en/group-by-functions.html#function_group-concat
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