Default frames can make LAST_VALUE look broken.
Section: Dialect notes
Remember LAST_VALUE frame semantics
sql
sql
LAST_VALUE(amount) OVER (
PARTITION BY customer_id
ORDER BY order_date
ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING
)Explanation
Add the full frame when you really want the final value in the partition rather than the current-row frame result.
Learn the surrounding workflow
Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing Dialect notes
QUALIFY shortcut in some warehouses
Filter window results without wrapping a subquery.
Portable alternative to QUALIFY
Use a subquery or CTE for broad compatibility.
Be explicit about NULL ordering when needed
Different engines may sort NULLs differently.
Create a supporting index for partition/order keys
Help the database read rows in the right order.