Summing all 5 table values to form new table? - mysql

Question

I have 5 tables with following properties,
+--------------------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------------------+-------------+------+-----+---------+-------+
| actor_id | int(11) | YES | MUL | NULL | |
| activity_object_id | int(11) | YES | MUL | NULL | |
| interest_level | tinyint(4) | YES | | 10 | |
| feed_view | smallint(6) | YES | | 0 | |
| quick_view | smallint(6) | YES | | 0 | |
| page_view | smallint(6) | YES | | 0 | |
| fullscreen_view | smallint(6) | YES | | 0 | |
| reserved1 | int(11) | YES | | NULL | |
| reserved2 | int(11) | YES | | NULL | |
| reserved3 | int(11) | YES | | NULL | |
| created_at | datetime | YES | | NULL | |
| updated_at | datetime | YES | | NULL | |
+--------------------+-------------+------+-----+---------+-------+
How we can create new temporary table which is sum of all the 5 table values. activity_object_id is unique and one table might contain activity_object_id while the other one may not.
table1 has one active_object_id say 'gowthamkey', table2 has same key 'gowthamkey', and table3 might not have 'gowthamkey'. So I want to sum up all the tables values into new table, so that it has one key 'gowthamkey' where values are sum of:
feed_view,quick_view,page_view,fullscreen_view,reserved1,reserved2,reserved3 except actor_id, interest_level, created_at, updated_at.
Here is my query as per #bummer answer:
CREATE TABLE actor_activity_object_stats_temp_7_days_12 AS
select actor_id, activity_object_id, interest_level, SUM(feed_view) AS feed_view, SUM(quick_view) AS quick_view, SUM(fullscreen_view) as fullscreen_view
from (
select * from actor_activity_object_stats_temp_2016_04_29
union all,
select * from actor_activity_object_stats_temp_2016_04_30
union all,
select * from actor_activity_object_stats_temp_2016_05_01
union all,
select * from actor_activity_object_stats_temp_2016_05_02
union all,
select * from actor_activity_object_stats_temp_2016_05_03
union all,
select * from actor_activity_object_stats_temp_2016_05_04
union all,
select * from actor_activity_object_stats_temp_2016_05_05
union all,
select * from actor_activity_object_stats_temp_2016_05_06
union all,
select * from actor_activity_object_stats_temp_2016_05_07
union all,
select * from actor_activity_object_stats_temp_2016_05_08 ) AS X
group by activity_object_id

Answer 1

Start with a UNION, then use SUM() to add all the values from all the tables for the same activity_object_id.
CREATE TABLE new_table
AS SELECT activity_object_id, SUM(feed_view) AS feed_view, SUM(quick_view) AS quick_view, ...
FROM (SELECT * FROM table1
UNION ALL
SELECT * FROM table2
UNION ALL
SELECT * FROM table3
...) AS x
GROUP BY activity_object_id

Answer 2

I believe this should solve your issue.
create table new_table
as
select * from table1
union
select * from table2
union
select * from table3
union
select * from table4
union
select * from table5)
here's a sql fiddle to illustrate.