divide - SQL - test if numeric field is holding an integer -

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i have numbers (from select)

    col1         col2   1. 3.6   ,    3   2. 3.6   ,    5

i want this

if(col1/col2 = integer)     update column else(col1/col2  = decimal number)     update column

any idea how number integer or decimal?

you use modulo 1 (% 1), , if remainder 0 have 'integer'. example, sql server:

if (col1 / col2 ) % 1 = 0     -- integer else    -- decimal

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