The Daily Dose

The Prescription for SQL Server

Nov 02

Rx for Demystifying Index Tuning Decisions – Part 2

By Jeffry Schwartz | Expert , Missing Indexes , Performance Tuning , Query Tuning , SQL Development , SQL Server

Review In Part 1 of this blog series the author discussed various aspects of SQL Server indices such as: Types of indices and their variations, e.g., clustered, nonclustered, filtered, and covering Physical versus logical index access methods, e.g., seeks, scans, key/RID lookups, singleton lookups, and range scans Why index tuning should begin with queries Determining […]

Continue reading
Oct 26

Rx for Demystifying Index Tuning Decisions – Part 1

By Jeffry Schwartz | Expert , Missing Indexes , Performance Tuning , Query Tuning , SQL Administration , SQL Development , SQL Server

Overview Indices are one of the most troubling and mysterious areas for DBAs and developers. Most understand that adding a badly needed index can yield dramatic query performance improvements, but how does one know what is needed? Many believe more indices are better, regardless of the number. Most fear deleting ANY existing indices, even when […]

Continue reading
Sep 28

Get Index Column Info with Includes for One or Many Tables

By Lori Brown | Helpful Scripts , Missing Indexes , Performance Tuning , Query Tuning , SQL Administration , SQL Development , SQL Server

I was recently working with one of my clients on some low hanging fruit type of query tuning. We had checked the cache for plans with missing index warnings in them and were trying to see if we could tweak and existing index or add a new index to speed things up. If you ever […]

Continue reading
Sep 14

Find Tables That Have Special Features Enabled

By SQLRx Admin | Helpful Scripts , Miscellaneous , SQL Server , Tip of the Month

Find out if any of tables in your database have special features enabled using the queries below.  These features need to be understood and carefully managed. — CDC Enabled Tables select distinct t.name AS CDCTables from sys.tables t where t.is_tracked_by_cdc = 1   — File Tables — SQL 2012 + select distinct t.name AS FileTables from […]

Continue reading
1 4 5 6 7 8 22
>