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PostgreSQL Date Difference Calculations
geeksforgeeks.org/postgresql/postgresql-datediff-function/Yapay zekadan makale özeti
- Main Methods
- PostgreSQL doesn't have a direct DATEDIFF function
- Date differences can be calculated using simple subtraction
- AGE() function calculates time intervals between dates
- Time Measurements
- EXTRACT(YEAR) retrieves years between dates
- EXTRACT(MONTH) isolates months within time intervals
- Days difference can be calculated directly using subtraction
- Weeks difference requires dividing days by 7
- Hours difference uses EXTRACT(EPOCH) and division by 3600
- Minutes difference uses EXTRACT(EPOCH) and division by 60
- Seconds difference uses EXTRACT(EPOCH) for precise timing