SQL Server: Performance Tuning :Understanding Set Statistics IO output
Performance tuning is one of the important task of DBA. Many times people comes to us with different types of...
2013-07-24 (first published: 2013-07-16)
4,006 reads
PracticalSQLDba
SQL Server: All About SQL Server Statistics : Consolidated post
Statistics is the one of the important factor which helps the optimizer to choose the right execution plan.At the same time, many of us (so called DBA) will not...
2013-07-11
38 reads
SQL Server: All About SQL Server Statistics : Consolidated post
Statistics is the one of the important factor which helps the optimizer to choose the right execution plan.At the same...
2013-07-10
971 reads
SQL Server: Part 5 : All About SQL Server Statistics : How to Detect outdated Statistics ?
In the last post, we have discussed about the auto update statistics threshold and concluded that auto updated statistics threshold are good enough to get optimal performance in some workload. In...
2013-07-09
32 reads
SQL Server: Part 5 : All About SQL Server Statistics : How to Detect outdated Statistics ?
In the last post, we have discussed about the auto update statistics threshold and concluded that auto updated statistics threshold are good...
2013-07-08
1,635 reads
SQL Server: Part 4 : All About SQL Server Statistics : Auto Update Statistics Threshold - Importance of Manual statistics maintenance
In the last post, we have discussed about the auto create and auto update property of the statistics. Do we really need to do manual statistics maintenance to keep...
2013-07-03
52 reads
SQL Server: Part 4 : All About SQL Server Statistics : Auto Update Statistics Threshold - Importance of Manual statistics maintenance
In the last post, we have discussed about the auto create and auto update property of the statistics. Do we...
2013-07-09 (first published: 2013-07-02)
4,937 reads
SQL Server: Part 3 : All About SQL Server Statistics :Who Create and Manage the Statistics ? Role of Statistics in Performance Tuning
In the last posts, we have discussed about the histogram ,density vector and how SQL server use the statistics information in cardinality estimation. In this post let us discuss about how the...
2013-07-02
141 reads
SQL Server: Part 3 : All About SQL Server Statistics :Who Create and Manage the Statistics ? Role of Statistics in Performance Tuning
In the last posts, we have discussed about the histogram ,density vector and how SQL server use the statistics information...
2013-07-01
1,525 reads
SQL Server: Part 2 : All About SQL Server Statistics :Histogram
In the Part 1 about SQL server Statistics, we have discussed about density vector information stored in the the statistics. In...
2013-06-27
16,280 reads
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Question of the Day
Creating a JSON Document III
I have this data in a table called dbo.NFLTeams
TeamID TeamName City YearEstablished ------ -------- ---- --------------- 1 Cowboys Dallas 1960 2 Eagles Philadelphia 1933 3 Packers Green Bay 1919 4 Chiefs Kansas City 1960 5 49ers San Francisco 1946 6 Broncos Denver 1960 7 Seahawks Seattle 1976 8 Patriots New England 1960If I run this code, how many rows are returned?
SELECT TOP 2
json_objectagg('Team' : TeamName)
FROM dbo.NFLTeams;
See possible answers