mysql - Populate empty dates -


my database table structure like

stats_id stats_date   stats_visitors stats_visits 1        2015-08-01   10             20 2        2015-08-03   12             21 3        2015-08-04   14             24 4        2015-08-07   15             21

what easiest way add empty stats date. example missing 2015-08-02 should be:

stats_id stats_date   stats_visitors stats_visits 1        2015-08-01   10             20 5        2015-08-02   0              0 2        2015-08-03   12             21 3        2015-08-04   14             24 6        2015-08-05   0              0 7        2015-08-06   0              0 4        2015-08-07   15             21

i can check every day if has data , populate when have on 10k rows not idea. if use check each day generate on 10k queries.

is there easy way can this?

this should out.

insert table1 select '',selected_date,'0','0'  (select adddate('1970-01-01',t4.i*10000 + t3.i*1000 + t2.i*100 + t1.i*10 + t0.i) selected_date  (select 0 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t0,  (select 0 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t1,  (select 0 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t2,  (select 0 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t3,  (select 0 union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t4) v selected_date between (select min(stats_date) table1) , (select max(stats_date) table1) , selected_date not in (select stats_date table1);

the select adddate part of query give dates in between max , min date of data set, , using not in dates not exist in data set.

since have auto incrementing id field, can pass empty string in select query , ignore , insert auto-incremented value.

source of select dates query: how list of dates between 2 dates in mysql select query

hope solves problem.


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