Insert multiple data from subquery into another table in postgres sql

问题

I have table alpha with two columns

id   school_name

I have another table beta which has around 600 rows of data with following columns

id  school_name    school_state school_city

now i want to select school_name from beta and insert it into alpha

something like

insert into alpha (school_name) values(select school_name from beta )

but for all data ,I know it can be done with procedures but pgsql doesn't support procedures unlike mysql ,so how to achieve it?

回答1:

The INSERT INTO ... SELECT syntax does not use a VALUES clause. Fix your syntax slightly, and your query should work:

INSERT INTO alpha (school_name)
SELECT school_name
FROM beta;

来源：https://stackoverflow.com/questions/50369147/insert-multiple-data-from-subquery-into-another-table-in-postgres-sql