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This article provides a detailed exploration of various methods to view table structure in SQL Server, including the use of INFORMATION_SCHEMA.COLUMNS system view, sp_help stored procedure, system catalog views, and ADO.NET's GetSchema method. Through specific code examples and in-depth analysis, it helps readers understand the applicable scenarios and implementation principles of different approaches, and compares their advantages and disadvantages. The content covers complete solutions from basic queries to programming interfaces, suitable for database developers and administrators.