I insert the same data into two tables: one is partitioned, the other is normal. I use the following command to determine the size of the normal table: The output is: 6512 MB I use the following command to determine the size of the partitioned table: The output is: 6712.1 MB The partitioned table has 1001 partitions. Both tables have
Tag: database-partitioning
SQL result dense Rank in revolving group pattern
Say I have a table like store date is_open Bay 1/1/2022 true Bay 1/2/2022 true Bay 1/3/2022 true Bay 1/4/2022 false Bay 1/5/2022 false Bay 1/6/2022 false Bay 1/7/2022 true Bay 1/8/2022 true Bay 1/9/2022 true Walmart 1/7/2022 true Walmart 1/8/2022 false Walmart 1/9/2022 true I want them to use partition by and get the rank of the group such
Using Over Partition in sql compared with group by
Given the table creation code bellow, is there an alternative method(s) to display the same result to using group by and count(*)? And what’s the difference in this case? Answer This query puts the total for each colour on each row: Before window functions, a typical solution would be a correlated subquery: You can also express this using join and
MySql Partitioning questions for very segmented data
There are a number of partitioning questions out here and a lot of the time people caution that it often does not help performance. I want to see if my use case is one of the few that does and also clarify something. In my use case, every user is going to be assigned to a bucket. Every user in
SQL Server query order by sequence serie
I am writing a query and I want it to do a order by a series. The first seven records should be ordered by 1,2,3,4,5,6 and 7. And then it should start all over. I have tried over partition, …
Get number of partitions in PostgreSQL database
What is the most efficient way to get the number of partitions created in the database? I am using PostgreSQL API for C++. Answer This is how you can select all the names of the table partitions: It can be used to count as well: