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I have a column that is a concatenation of 5 other columns plus a join to a different table. UPDATE db.a JOIN db.b ON fk_b = b.pk SET concat_field = CONCAT(field1,field2,field3,b.field,field4,fi...
#2: Post edited
by
Alexei
·
2021-06-15T05:52:16Z (over 3 years ago)
added relevant tag
#1: Initial revision
by
Charlie Brumbaugh
·
2021-06-14T16:20:18Z (over 3 years ago)
How to create a MySQL generated column that uses a join in a concat?
I have a column that is a concatenation of 5 other columns plus a join to a different table.
UPDATE db.a
JOIN db.b ON fk_b = b.pk
SET concat_field = CONCAT(field1,field2,field3,b.field,field4,field5)
What I would like to do is set the ``concat_field`` to a generated column,
concat_field VARCHAR(255) GENERATED ALWAYS AS (CONCAT(fields)) stored,
However while it's easy to do with a straight `concat` the join is giving me trouble.
How would I turn the update statement into a generated field?