sql server performance tuning books

Tags: file http img Local image HTTPS student engine MSSThe recent project to do thousands of students to face recognition record (currently about 630000 lines) query the last record, it is conceivable that the performance of this piece is a problem. As a shen, get to SQL Server Profiler and Database Engine Tuning Advi

When it is determined that application performance problems can be attributed to one or several time-consuming statements, tuning these statements is the responsibility of the database administrator or database application developer. Statement tuning is one of the essential skills for dealing with databases.When you face a "problem" statement, how should you anal

SQL Server data insertion performance note, SQL Server Insert NOTE I haven't paid much attention to SQL Performance for a long time. Because the recent project neither has tens of milli

calculation.In fact, the goal of bitmap computing is very simple: pre-filtering , because our statement requires the result item to compare more than 10000 rows of data, in the thread behind us to take the parallel scan of the way to obtain the data. Due to the large amount of data, the various threads in the process of the completion of data acquisition time is different, in order to avoid the slow execution of a thread, resulting in overall congestion, the index introduced a bitmap operation

decomposition, it seems necessary to sort out a directory ....SQL Server Tuning Series BasicsSQL Server Tuning Series Basics (Summary of common operators)SQL Server

The impact of Tempdb on SQL Server performance optimization and tempdb Performance Optimization First, consolidate the basic knowledge of tempdb. Introduction: Tempdb is an important part of SQLServer, which is used to store temporary objects. Tempdb is an SQL

parameter mode, what problems the automation parameters will bring, and how to solve them.The problem itself is very simple, if you do not notice still occasionally will appear confused. Off Topic Have a little feeling very deep, that is, more and more practical problems, have to have theoretical knowledge to support,But it is often theoretically said that the situation does not appear frequently or even if there is no attention, there is time to neglect some theoretical knowledge.For the prob

very deep, that is, more and more practical problems, have to have theoretical knowledge to support,But it is often theoretically said that the situation does not appear frequently or even if there is no attention, there is time to neglect some theoretical knowledge.For the problems encountered, if you really want to find out, still have some theoretical knowledge to do the groundwork. Many times, often after encountering problems, recalled once good seems to have seen this aspect of theoretica

Original: SQL Server performance Optimization nolock, greatly improve database query performanceThe company database grows with time, the data is more and more, the query speed is also more and more slow. Into the database to see a bit, hundreds of thousands of of the data, the query is really time-consuming.To improve the query

ELSEStatement_end_offsetEND -Statement_start_offset)/ 2) fromSys.dm_exec_sql_text (sql_handle)) asQuery_text--, Plan_handle,db_name(qp.dbid), Qp.query_plan fromsys.dm_exec_query_stats Crossapply Sys.dm_exec_query_plan (plan_handle) QPORDER by(total_logical_reads+Total_logical_writes)/Execution_countDESC--indexes that have not been usedSELECTO.nameobject_name --Table name, I.name index_name--Index name, I.type_desc--whether the clustered index, S.user

physical disk when SQL Server reads the required data into the data buffer.Unfortunately, when we do query optimization, we do not need to consider physical reading. Although physical reads are likely to require more server resources than logical reads. Because SQL Server d