Basically the question is how to get from this:
foo_id foo_name 1 A 1 B 2 C
to this:
foo_id foo_name 1 A B 2 C
Basically the question is how to get from this: foo_id foo_name 1 A 1
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Basically the question is how to get from this:
foo_id foo_name 1 A 1 B 2 C
to this:
foo_id foo_name 1 A B 2 C
https://dev.mysql.com/doc/refman/8.0/en/aggregate-functions.html#function_group-concat
From the link above,
GROUP_CONCAT: This function returns a string result with the concatenated non-NULL values from a group. It returns NULL if there are no non-NULL values.