Optimize Sales Queries with an Index on Sale Date

Creating an Index on a Partitioned Table

Write a PostgreSQL query to create an index on the sale_date column of the Sales partitioned table.

Solution:

-- Create an index named idx_sales_date on the sale_date column of the Sales table
CREATE INDEX idx_sales_date ON Sales (sale_date);

Explanation:

• Purpose of the Query:
• Improves query performance on partitioned data.
• Key Components:
• CREATE INDEX: Adds an index to speed up queries.
• Real-World Application:
• Essential for optimizing searches in large partitioned datasets.

Notes:

• Indexing is applied at the partitioned table level, but partitions must be indexed separately.

For more Practice: Solve these Related Problems:

• Write a PostgreSQL query to create a partial index on a specific partition of a partitioned table.
• Write a PostgreSQL query to create a unique index that spans all partitions of a partitioned table.
• Write a PostgreSQL query to create a concurrent index on a partitioned table to avoid locking issues.
• Write a PostgreSQL query to create an index on a computed column in a partitioned table.

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Previous PostgreSQL Exercise: Renaming a Partition in a Partitioned Table.