SQL Window Functions: OVER Clause, PARTITION BY, ORDER BY, and Frames/Count all rows without collapsing them
Return total row count on every row.
Section: OVER clause fundamentals
Count all rows without collapsing them
sql
sql
SELECT order_id,
customer_id,
COUNT(*) OVER () AS total_rows
FROM orders;Explanation
A window aggregate keeps detail rows intact while computing a value across the full result set.
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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
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Same sheet · prioritizing OVER clause fundamentals
Assign row numbers inside each partition
Number rows in order within each customer.
Use RANGE for peer-aware frames
Group rows that share the same ordering value.
Exclude the current row from a frame
Compare a row against all earlier rows only.