sql - Elasticsearch Join columns from different index with condition -

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i have 2 different indexes in elasticsearch, indx1 , indx2 have indexed sql database using river plugin.

 indx1  ----------     id  |  amt     1      2     2      3     3      2        1      9      2      4  ----------

indx 2

---------- id   |  name  1       alex 2       joe 3       mary   ----------

i want create new index calculate average amount indx1 , join in single index. final structure of index should 

indx_final   ---------- id | name | avg amt | status 1    alex    5.5      high 2    joe     3.5      med 3    mary    2.0      low ----------

the status set according average amount , if avg amt > 4 , status = high, if avg amt >3, status = med, if avg amt <2.5 ,status = low. possible in elasticsearch only? if not possible have calculation in sql , index data again.

any appreciated. thanks!


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