Method create_custom_table

datafusion/core/src/execution/context/mod.rs:1413–1428

(
        &self,
        cmd: &CreateExternalTable,
    )

    }

    async fn create_custom_table(
        &self,
        cmd: &CreateExternalTable,
    ) -> Result<Arc<dyn TableProvider>> {
        let state = self.state.read().clone();
        let file_type = cmd.file_type.to_uppercase();
        let factory =
            state
                .table_factories()
                .get(file_type.as_str())
                .ok_or_else(|| {
                    exec_datafusion_err!("Unable to find factory for {}", cmd.file_type)
                })?;
        let table = (*factory).create(&state, cmd).await?;
        Ok(table)
    }

    async fn find_and_deregister(
        &self,