I have been trying to remove duplicates from the table but I need more of a generalized way of doing it. There are numerous ways to do it if the table has a unique identifier like row ID. But otherwise, it seems to be very difficult and different for different databases.
I even explored CTE (Common Table Expressions) to do the same but seems that databases do not allow the use of CTE followed by
DELETE clause (at least what I saw with MySQL and Snowflake).
But in PostgreSQL, there seems to be a way in which we can achieve this without necessarily having any unique identifier. This is through the use of
ctid, a system column in PostgreSQL. I am curious if there is a similar functionality like
ctid for other databases especially MySQL and Snowflake is what I am interested in currently.
I am curious if there is a similar functionality like
ctidfor other databases especially MySQL and Snowflake is what I am interested in currently.
There is no
CTID in Snowflake.
Answered By – Robert Long
Answer Checked By – Jay B. (BugsFixing Admin)