Better error needed for summary if cohort doesn't exist

darwin-eu-dev / omopgenerics

https://darwin-eu-dev.github.io/omopgenerics/

Apache License 2.0

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Better error needed for summary if cohort doesn't exist #166

Closed edward-burn closed 7 months ago

edward-burn commented 7 months ago

library(CDMConnector)
#> Warning: package 'CDMConnector' was built under R version 4.2.3

con <- DBI::dbConnect(duckdb::duckdb(dbdir = eunomia_dir()))

cdm <- cdm_from_con(con = con, 
                    cdm_schema = "main", 
                    write_schema = "main", 
                    cdm_name = "my_duckdb_database")
summary(cdm$not_a_cohort)
#> Length  Class   Mode 
#>      0   NULL   NULL

^{Created on 2024-02-16 with reprex v2.0.2}

catalamarti commented 7 months ago

summary(NULL)