partitioning

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Too many columns to index - use mySQL Partitions?

We have an application with a table with 20+ columns that are all searchable. Building indexes for all these columns would make write queries very slow; and any really useful index would often have to[详细]

2023-01-30 21:04 分类：问答
Oracle multicolumn partitioning vs using a subpartition

Apart from the obvious, can anyone explain the what is different between multicolumn partitioning and using a subpartition? And which one is better for a OLTP scenario? For details, see Managing Parti[详细]

2023-01-29 12:21 分类：问答
mysql database automatic partitioning

I have a mysql database table that I want to partition by date, particularly by month & year. However, when new data is added for a new month, I don\'t want to need to manually update the database[详细]

2023-01-29 05:10 分类：问答
Partition neighbor points given a euclidean distance range

Given two points P,Q and a delta, I defined the equivalence relation ~=, where P ~= Q if EuclideanDistance(P,Q) <= delta. Now, given a set S of n points, in the example S = (A, B, C, D, E, F) and n[详细]

2023-01-28 19:44 分类：问答
Group/Cluster Object List Based on multiple discrete attributes

I have a list of objects with attributes eg Color, Length, Width and importantly Price.I am ultimately trying to partition the list into the largest subsets so that each subset member has the same pri[详细]

2023-01-28 09:22 分类：问答
Dynamic programming to split a string into a list of separate words

This is basically a dublicate of: How to split a string into words. Ex: "stringintowords" -> "String Into Words"?[详细]

2023-01-28 04:16 分类：问答
ActiveRecord, Postgres and partitioned tables

I\'ve set up a trigger-based partitioning scheme on one of our pg 8.3 databases 开发者_如何学运维according to the pg docs here:. Basically, I have a parent table, along with several child tables. An i[详细]

2023-01-26 20:39 分类：问答
is it possible to emultate oracle partitioning with SQLAlchemy or any ORM tools?

i\'m almost a newbie to database stuffs. we are using oracle 10g standard edition as our datastore. +30m new rows are being inserted to a single table daily.(it\'s the hugest amount among what we\'ve[详细]

2023-01-26 16:08 分类：问答
How to modify Lomuto partition scheme?

Lomuto partition 开发者_开发问答is a simple partition algorithm used in quicksort. The Lomuto algorithm partitions subarray A[left] ... A[right] and assumes A[left] to be a pivot. How to modify this a[详细]

2023-01-25 05:09 分类：问答
MySQL: is Partitioning a good way to handle deletes?

I have an MySQL table: CREATE TABLE responses ( id INT NOT NULL AUTO_INCREMENT, other_id INT NOT NULL, details TEXT,[详细]

2023-01-24 07:49 分类：问答