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SELECT name
FROM (
SELECT name
FROM [table1]
UNION
SELECT name
FROM [table2]
) [table]
GROUP BY name
SELECT
FROM (
SELECT name
FROM [table1]
UNION
SELECT name
FROM [table2]
) [table]
GROUP BY name
select name
from 表一
union
select name
from 表二
select distinct name from A
union all
select distinct name from B