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indexing

Database indexing for query performance

DatabasesPostgreSQL Case Insensitive Queries with ILIKE

Learn how to make PostgreSQL queries case-insensitive using ILIKE operator, LOWER/UPPER functions, citext extension, and indexing for optimal performance. Ensure 'administrator', 'ADMINISTRATOR', and 'Administrator' return identical results.

1 answer• 1 view
DatabasesSQL Server Latest Record Per Employee Without OUTER APPLY

Optimize SQL Server queries to get latest attendance records per employee without OUTER APPLY. Use ROW_NUMBER() or MAX() JOIN for better performance.

1 answer• 1 view
DatabasesUnderstanding MySQL Index Types: PRIMARY, UNIQUE, FULLTEXT

Learn the key differences between PRIMARY, UNIQUE, INDEX, and FULLTEXT index types in MySQL. Discover when to use each type for optimal database performance and design.

1 answer• 2 views
ProgrammingHow to Access Ith Column of NumPy Multidimensional Array

Learn how to efficiently access the ith column in a NumPy array using slicing like test[:, i]. Get the first column [1, 3, 5] from [[1,2],[3,4],[5,6]]. Fast views, no copying, perfect for large numpy arrays and indexing.

1 answer• 1 view
WebCrawled - Currently Not Indexed in GSC: Why & Fixes

Discover why pages on small sites stay in 'Crawled - Currently Not Indexed' status in Google Search Console for months. Learn common reasons, troubleshooting for unindexed pages, and how to request recrawl effectively.

1 answer• 1 view
ProgrammingHow to Get Last Element of Python List: alist[-1]

Discover the best way to get the last element of a Python list using negative indexing alist[-1]. Compare with alist[len(alist)-1], performance, best practices, and edge cases for efficient list handling.

1 answer• 4 views