How Many Columns In A Single Table Can Have A Non-Clustered Index? Column Numbers In SQL Server, nonclustered indexes can contain up to 1023 columns each. Unique indexes can belong to either clustered ...

Listing A presents the SQL. While b-tree indexes are great for simple queries, they are not very good for the following situations: Low-cardinality columns—columns with less than 200 distinct ...

Are you wondering which tools can help you manage your SQL (Structured ... table and index architecture, including a deep dive into details such as pages and columns.