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Understanding SQL Server ILIKE: Native Equivalents and Performance Optimization in 2026

"Note: While PostgreSQL offers a native ILIKE operator for case-insensitive pattern matching, Microsoft SQL Server does not provide a direct ILIKE keyword. This guide explores the architectural reasons behind this absence and details the most efficient enterprise patterns to achieve case-insensitive searches in SQL Server. Database administrators and software engineers transitioning from open-source database engines like PostgreSQL frequently search for the SQL Server ILIKE equivalent. In PostgreSQL, ILIKE combines the LIKE operator with case-insensitivity, ignoring character capitalization during pattern matching. In the Microsoft SQL Server..."

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