Day: January 10, 2020

Certification
SQL Server
Study

NOTES | Combining Sets

Using Joins Often, data that you need to query is spread across multiple tables. The more normalized the environment is, the more tables you usually have. The tables are usually related through keys, such as a foreign key in one side and a primary key in the other. Then you can use joins to query […]

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Certification
SQL Server
Study

NOTES | Filtering and Sorting Data

While the traditional way to filter data in T-SQL is based on predicates, it also supports filtering data based on a specified number of rows and ordering. To do so, use TOP and OFFSET. Filtering Data with Predicates ON, WHERE, and HAVING are the three query clauses which enable your filtering of data based on […]

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