postgresql duplicate table code example

Example 1: postgres select duplicate columns

select Column1, Column2, count(*)
from yourTable
group by Column1, Column2
HAVING count(*) > 1

Example 2: copy table postgres

CREATE TABLE new_table AS 
TABLE existing_table;

Example 3: postgres select duplicate columns

select * from yourTable ou
where (select count(*) from yourTable inr
where inr.sid = ou.sid) > 1

Example 4: copy table postgres

CREATE TABLE new_table AS 
SELECT
*
FROM
    existing_table
WHERE
    condition;

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Sql Example

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