Question

I have two tables

t1(id,c)
values = (1,aa),(2,bb),(3,cc)

t2(id,c)
values = (2,bbb),(3,ccc),(4,ddd)

I need a query that will produce:

1,aa,null,null
2,bb,2,bbb
3,cc,3,ccc
null,null,4,ddd

Can this be done in MySql?

Answer 1

select t1.id,t1.c, t2.id, t2.c
FROM t1
LEFT JOIN t2 on t1.id=t2.id
UNION
select t1.id,t1.c, t2.id, t2.c
FROM t2
LEFT JOIN t1 on t1.id=t2.id

based on albin’s response.