19 Jul

NetworkX visualization with Graphviz (Example)

NetworkX visualization with Graphviz (Example)

If you are trying to visualize a nice graph with NetworkX, you should be exhausted by now. After all, NetworkX only provides basic functionality for graph visualization. The main goal of NetworkX is to enable graph analysis. For everything other than basic visualization, it’s advisable to use a separate specialized library. In my case, I choose Graphviz. It’s simplistic to get an attractive visualization of a NetworkX graph with Graphviz. I’m taking a gradual start, but you may skip to “NetworkX with Graphviz” directly.

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27 Jan

What-if Analysis with SQL server (Hypothetical Indexes) – Using python

What-if Analysis with SQL server (Hypothetical Indexes) – Using python

If you are a Database administrator or a developer working with a transaction database, you might have come across this problem

“Is it worthy to build that index?”

Exact answer for that question is only known once you build it. However, luckily SQL server provides you with functionality to check the workload performance under hypothetical indexes (without actually creating them)

You can find more information about hypothetical indexes here.

I will just provide you with a simple python code that will help you with the hypothetical index creation. Example code will compose of 3 parts

  1. Index creation
  2. Enabling the index (unlike the normal indexes you need to enable them before using)
  3. Executing the query under the hypothetical index

Index creation

Enabling the indexes

Executing the query

 

 

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