SQL Reference

Quick Reference

The MySQL PERIOD_DIFF() function returns the difference between two periods (both periods should be in the same format). The result will be in months.

SELECT PERIOD_DIFF(202300, 202310);

Output

PERIOD_DIFF(202300, 202310)
-10

Syntax

PERIOD_DIFF(period1, period2)

Parameters

ParameterDescription
period1A period in the format: YYMM or YYYYMM (required)
period2Another period in the format: YYMM or YYYYMM (required)

SQL Notes:

  • Any work being done to modify the structure of a database or delete tables or the the database itself should only be done after making a recent backup

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