Expect GROUP_CONCAT aggregration funciton
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- Dominant language
- Rust
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- Merged PRs (30d)
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Description
Expect Column api to support concatenate string of aggregation function
Since there are different usage and function name between sqlite, postgresql, mysql
e.g
fn group_conncat<C>(&self, separator: Option<&str>, order_by: Option<C>) -> Expr {
todo!()
}
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Research direction
Start by locating the Column API and existing aggregation-function support, then compare how SQLite, PostgreSQL, and MySQL express string aggregation. Define how separator and order_by should map across those dialects; done means the API supports the requested GROUP_CONCAT-style operation for the named databases with coverage for its generated SQL.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- mysql, postgresql, rust, sqlite
- Domain
- backend-api-design, databases
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100