st: Replace string values

[Ronnie Babigumira <rb.glists@gmail.com>]

Dear list,
I am trying to produce a report using Stata's -list- command. The data looks like this

        table   quarter     n
    qtr_a.dta         1   128
    qtr_a.dta         2   129
    qtr_a.dta         3   128
    qtr_a.dta         4     4
    qtr_b.dta         1   130
    qtr_b.dta         2   129
    qtr_b.dta         3   130
    qtr_b.dta         4     5

However, to make it easier on the readers eye (I think), I would list it like this

        table   quarter     n
    qtr_a.dta         1   128
                      2   129
                      3   128
                      4     4
    qtr_b.dta         1   130
                      2   129
                      3   130
                      4     5

Any ideas how I can replace the non-first cases of each table with missing

So far, I was trying to go down this path

bysort  table  quarter: replace  table = "" if table ! =  table[1]
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