postgres first_value in gropby 1

postgres first_value in gropby

try using "DISTINCT" instead of "GROUP BY", then use the "PARTITION BY"
clause inside the first_value.

Here is what the above code is Doing:
1. The first_value function is used to get the first value of the “date” column
for each “id” value.
2. The partition by clause is used to tell the first_value function to only
consider the first value of the “date” column for each “id” value.
3. The order by clause is used to tell the first_value function to order the
“date” column by the “date” column in ascending order.
4. The over clause is used to tell the first_value function to use the
partition by and order by clauses.
5. The distinct clause is used to tell the first_value function to only return
distinct values.
6. The group by clause is used to tell the first_value function to group the
results by the “id” column.

Similar Posts