Updating in sql
The topic of statistics and their maintenance is not straightforward.
Lots of questions occur to people when I’m doing a presentation about statistics, and some get asked in front of the rest of the audience.
Bad or missing statistics leads to poor choices by the optimizer: The result is horrific performance.
Recently, for example, I watched a query go from taking hours to taking seconds just because we got a good set of statistics on the data.
They’re created at different points and, unless you’re creating the statistics manually yourself, they’re created slightly differently.
Simple to complex insertions and updates can be performed through SQL, allowing us to provide (upon map refresh or redraw) instant feature class updates to end users.
Real-time data is becoming more and more prevalent in the world around us and therefore in greater demand within GIS applications.
However, with the advent of Microsoft's SQL Server 2008 and Esri support for the built-in SQL Server 2008 spatial data types, real-time updating of Arc SDE feature classes in SQL Server 2008 has gotten easier.
By utilizing the SQL Server geometry and geography data types, SQL stored procedures, and triggers, we can essentially bypass the Esri Arc SDE stack and push attribute and spatial updates directly to nonversioned feature class tables.
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The statistics on an index are created with the index.