PERIOD_DIFF
Syntax
PERIOD_DIFF(P1,P2)
Description
Returns the number of months between periods P1 and P2. P1 and P2
can be in the format YYMM
or YYYYMM
, and are not date values.
If P1 or P2 contains a two-digit year, values from 00 to 69 are converted to from 2000 to 2069, while values from 70 are converted to 1970 upwards.
Examples
SELECT PERIOD_DIFF(200802,200703); +----------------------------+ | PERIOD_DIFF(200802,200703) | +----------------------------+ | 11 | +----------------------------+ SELECT PERIOD_DIFF(6902,6803); +------------------------+ | PERIOD_DIFF(6902,6803) | +------------------------+ | 11 | +------------------------+ SELECT PERIOD_DIFF(7002,6803); +------------------------+ | PERIOD_DIFF(7002,6803) | +------------------------+ | -1177 | +------------------------+
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