How can I calculate the number of months between YYYYMM integer values in PostgreSQL? -


how can calculate number of months between 2 yyyymm integer values in postgresql?

data:

| date1  | date2  | |--------|--------| | 201608 | 201702 | | 201609 | 201610 |

desired output:

| date1  | date2  | monthsbetweeninclusive | monthsbetweenexclusive | |--------|--------|------------------------|------------------------| | 201608 | 201702 | 7                      | 6                      | | 201609 | 201610 | 2                      | 1                      |

i have looked @ postgresql date function documentation i'm unable find solution operates on yyyymm integer values.

with t(d1,d2) (values(201608,201702),(201609,201610)) select   *,   ((d2/100*12)+(d2-d2/100*100))-((d1/100*12)+(d1-d1/100*100)) t;

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