Databricks SELECT TOP 10
Databricks SELECT TOP 10
In Databricks, you use the LIMIT
clause instead of SELECT TOP
to get the first 10 rows of a table or result set.
Here’s the basic syntax:
SELECT column_name1, column_name2, ...
FROM table_name
ORDER BY column_name(s) -- (Optional, to sort before limiting)
LIMIT 10;
Explanation:
- SELECT: Specifies the columns you want to retrieve.
- FROM: Specifies the table from which to retrieve the data.
- ORDER BY: (Optional) Sorts the result set based on one or more columns. If you don’t use
ORDER BY
, the rows selected might be arbitrary. - LIMIT: Specifies the maximum number of rows to return (in this case, 10).
Example:
Let’s say you have a table named customers
with columns customer_id
, name
, and email
. To get the top 10 customers alphabetically by name:
SELECT customer_id, name, email
FROM customers
ORDER BY name
LIMIT 10;
Important Note:
- If you’re working with large datasets, using
LIMIT
withoutORDER BY
can lead to non-deterministic results. It’s generally recommended to useORDER BY
to ensure consistency.
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