[CALCITE-4395] Add an interface in RelOptMaterializations to allow registering normalization rules

• Type: Wish
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: xzh_dz
• Created: 12/Nov/20 07:25
• Updated: 24/Feb/22 02:12

Description

In the current framework of materialized recognition, the commonly used relational algebra materialized view recognition algorithm has been implemented, but in specific scenarios, users need to customize the algorithm of materialized view recognition to enhance the ability of materialized view recognition. The algorithm of user-defined materialized view recognition has been implemented here[1]. In addition, the ability of normalization is a very important point before materialized recognition. Normalization can simplify the difficulty of materialized view recognition. Currently, the ability of normalization based on relation algebra can not well support the needs of users. Users need to be able to customize normalization rules, which may be equivalent transformation of some relational algebra. Therefore, we should allow users to customize some normalization algorithms, enhance the normalization ability before the recognition of materialized views.

[1]Add an interface in RelOptMaterializations to allow registering UnifyRule

Issue Links

• is related to: CALCITE-3409 Add a method in RelOptMaterializations to allow registering UnifyRule
• links to: GitHub Pull Request #2262