Questions in Concept Derive Tables hadm_id

[liuxinyuan123]

When I extract the data from the concepts table, there are many cases repeated, then I find the hadm_id are not included in derived concept tables such as "first_day_lab" and "first_day_bg" and so on, I think it may be a bug or something else?

[yongfanbeta]

What specific cases are repeated? can't see from the figure

there are many cases repeated