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Month: April 2017

Nuances of Null – Using IsNull, Coalesce, Concat, and String Concatenation

April 23, 2017October 17, 2017 Jeff Mlakar1 Comment

Null marks are a fact of life in relational databases. Sometimes it is good to revisit the basics of how they are treated in basic system functions and T-SQL because they can be tricky. Look at the following scenarios of how null marks are treated different than the unsuspecting eye might see.

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