Fetch Sales Data Directly from the 2023 Partition

Querying Data from a Partitioned Table

Write a PostgreSQL query to retrieve all sales data from the Sales_2023 partition.

Solution:

-- Retrieve all sales records from the Sales_2023 partition
SELECT * FROM Sales_2023;

Explanation:

• Purpose of the Query:
• Fetches data only from a specific partition for performance efficiency.

Notes:

• Partition queries are faster than scanning the entire table.

For more Practice: Solve these Related Problems:

• Write a PostgreSQL query to retrieve data from the default partition of a partitioned table for records with undefined keys.
• Write a PostgreSQL query to query a specific range partition in a time-series table and filter results by a narrow date range.
• Write a PostgreSQL query to query multiple partitions simultaneously using partition pruning hints to optimize performance.
• Write a PostgreSQL query to retrieve data from a list-partitioned table by directly specifying the partition key value in the WHERE clause.

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Previous PostgreSQL Exercise: Inserting Data into a Partitioned Table.