| PostgreSQL | ||
|---|---|---|
| Prev | Chapter 4. The Query Language | Next |
You can update existing instances using the update command. Suppose you discover the temperature readings are all off by 2 degrees as of Nov 28, you may update the data as follow:
UPDATE weather
SET temp_hi = temp_hi - 2, temp_lo = temp_lo - 2
WHERE date > '11/28/1994';| Prev | Home | Next |
| Joins Between Classes | Up | Deletions |