partitioning

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Can MySQL parallelize UNION subqueries (or anything at all)?

I use a partitioned table with a large amount of data. According to MySQL docs, it is on the ToDo list that:[详细]

2023-03-23 19:25 分类：问答
Can a guid be a good partition key?

I have to store many gigabytes of data across multiple machines. The files are uniquely identified by Guid and one file can be hosted on one machine only. I was wondering if I could use the Guid as a[详细]

2023-03-22 23:50 分类：问答
2D Spatial partitioning alternatives to spatial hashes and quadtrees

I\'ve been 开发者_高级运维trying to implement a spatial partitioning algorithm in my game, but both spatial hashes and quadtrees aren\'t what I\'m looking for.[详细]

2023-03-22 13:48 分类：问答
SQL Server 2005: Aligning indexes with partitioned table

I\'m attempting to align an index with a partitioned table, but the partition key column is nullable in the table definition.[详细]

2023-03-20 06:26 分类：问答
is sharding based on the first char of username an example of consistent hashing?

is sharding based on firstchar of user\'s name an example of consistent hashing? To be sure, if i shard my database depending on the char-length of the user\'s name, is it Consistent hashing in the s[详细]

2023-03-20 00:37 分类：问答
Is sharding simply horizontal partitioning across multiple databases?

Ok i\'ve got a bit of confusion between the terms horizontal partitioning and sharding. Is sharding simply horizontal partitioning across mul开发者_运维技巧tiple databases?In short, yes. Longer answe[详细]

2023-03-19 14:30 分类：问答
What are the benefits of vertical partitioning VS horizontal partitioning?

I simply cannot understand when or in what situation will we ever choose vertical partitioning instead of horizontal partitioning.[详细]

2023-03-19 13:38 分类：问答
Partitioning weighted graph into equally weighted groups

I have a bidirectional graph with weighted edges and weighted vertices. I want to find N groups of disjoint, connected vertices so that:[详细]

2023-03-17 20:03 分类：问答
how to save a huge database table

would like to know how the website like faceboo开发者_开发知识库k etc.. saved its data in MySQL database. The most interested thing I would like to know is: say, if you have a userID table (which is t[详细]

2023-03-17 17:10 分类：问答
Why aren'y my CHECK CONSTRAINTS on child tables being utilized by the planner to reduce the size of the plan?

I have a table that is partitioned by month and is used for holding apache log information.When I run EXPLAIN for a simple query which has a WHERE clause on the same field as the partition CHECKs, I g[详细]

2023-03-16 07:12 分类：问答