Closed frank-zsy closed 10 months ago
As the topics
field is a string array type, so we should use Nested(name LowCardinality(String))
type for the column and use LowCardinality
to speed up the lookup process.
/self-assign
We will import logs again after the database schema change, so the online env will not be available for next 2 days.
Description
We just ignored that actually from around 2021.11, the repo data in pull request related event logs started to contain the
topics
of the repo. We should add the column into the database so we can analysis the topic related data without accessing the GitHub API anymore. This would be a huge help for analyzing global data and technology trends.