I’m using PostgreSQL v.11. I have a table with 3 columns. My goal is to find redundancy inside data. First of all, I do a simple GROUP BY: SELECT client, block, “date” FROM lines GROUP BY …
I’m using PostgreSQL v.11. I have a table with 3 columns. My goal is to find redundancy inside data. First of all, I do a simple GROUP BY: SELECT client, block, “date” FROM lines GROUP BY …