Question

I am using PostgreSQL.
I have the data in table like:

Parent_id     Count     Read
---------     ------    ------
52405          2         False
52405          1         True

Now i want to summarize the data like :

Parent_id     Count     Read
---------     ------    ------
52405          3         False

Count would be the sum of the records.
Read would be the logical AND operation.

Answer 1

SELECT
    "Parent_id",
    SUM("Count"),
    bool_and("Read")
FROM
    tablename
GROUP BY
    "Parent_id";

I did use double quotes ” because of illegal column names and the use of upper case in the names.