PostgreSQL Insert Record: Insert rows from one table to another table
6. Write a SQL statement insert rows from the country_new table to countries table.
Here are the rows for country_new table. Assume that, the countries table is empty.
country_id | country_name | region_id ------------+--------------+----------- C1 | India | 1002 C2 | USA | C3 | UK | C4 | India | 1001 C5 | USA | 1007 C6 | UK | 1003 (6 rows)
Sample Solution:
Code:
INSERT INTO countries
SELECT * FROM country_new;
Here is the command to see the list of inserting rows :
postgres=# SELECT * FROM countries; country_id | country_name | region_id ------------+--------------+----------- C1 | India | 1002 C2 | USA | C3 | UK | C4 | India | 1001 C5 | USA | 1007 C6 | UK | 1003 (6 rows)
Have another way to solve this solution? Contribute your code (and comments) through Disqus.
What is the difficulty level of this exercise?
New Content: Composer: Dependency manager for PHP, R Programming