postgresql - Merge 3 tables in one table

Question

I have 3 tables (t1, t2, t3) in postgresql. they all have same number of columns (168 cols) with same type and overall 300k rows.

How can I add all of them in one table?

Answer 1

insert into t4
select * from t1
union all
select * from t2
union all
select * from t3

或者，如果您想在选择期间创建表：

select * into t4 from t1
union all
select * from t2
union all
select * from t3;

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