Irve Foley
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In this video we will discuss, how to use a comma separated list of values in SQL WHERE clause. Consider this Employees table
I alreeady know the FirstNames of 3 employees and we want to retrieve their respective records. This is very straight forward. We include a simple WHERE clause and the query works as expected. If we execute the following query, we get 3 the employees as expected.
The following is the challenge. At compile time, we don't know the firstnames of the 3 employees, we only know them at runtime. So, what do we do? Well, create a variable to hold the list of FIRSTNAMES separated by a delimeter like a comma (,) for example. Finally pass this variable as a parameter. Basically the following are the 2 lines of SQL code that we want to be able execute.
This sounds so simple and easy, but trust me it's not. The first time when someone asked me this question, it took over 30 minutes to figure out what's going on and to get it right. If we execute the above query as it is, we get an empty result set. This is because we do not have any employee in the Employees table whose FirstName='Mark,John,Sara'
The easiest way to get this to work is by using STRING_SPLIT() SQL Server built-in function. This function is very easy to use. As the name implies, it splits a given string and returns a single-column table whose rows are the substrings. The name of the column is Value
It has 2 parameters - The string that we want to split and the seprator. In our example, the seprator is a comma (,)
If you execute the above query, we get the following result as expected.
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Where would I locate best king crab in Hobart, Australia?
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Being eliminated early during a rank push in Free Fire is one of the worst things that can happen to a player
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How to eliminate in free fire?
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You need to burn 3500 calories a day to lose one pound a day, and you need anywhere between 2000 and 2500 calories in a day if you are doing your routine activities That means you need to starve yourself the whole day and exercise as much as to lose the remaining calories
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How to lose a pound a day?
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- Click on the menu item Raster ‣ Analysis ‣ DEM (Terrain models)
- In the dialog that appears, ensure that the Input file is the DEM layer
- Set the Output file to hillshade
- Also make sure that the Mode option has Hillshade selected
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How to get dem qgis?
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Additional Collector (LB), Nizamabad @ACLB_Nizamabad · Oct 7 జల్ శక్తి అభియాన్ పథకంలో భాగంగా నీటి వనరుల
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Who is nizamabad collector?