I'm not a particularly organized person by nature. When I am done using an item, my first impulse is to toss it on my dresser or a table. The workbench in my garage hasn't seen the light of day for several months. I tell you this so you can understand my deep appreciation for the orderliness of a relational database. Perhaps this is the element in my life that helps me compensate for the lack of order in other areas. I also love containers of all kinds. The cool thing about having containers is that when you need to put something away, there's always a place for it, but when it comes time to find it, that's often another story.
Retrieving data through queries is really about finding stuff. SQL queries are used to reach into the database and pull out useful information; sometimes you need to get all of the details and sometimes you need only a subset of data based on common characteristics. At times, the value or values you'll want to return are an aggregation of data that tell you something about the data, rather than just returning all of the data in raw form.
As you will see later on, queries can be nested within queries and can be saved as programming objects such as functions, stored procedures, and views. Queries can then get their data from these objects. Queries can be joined, nested, and compounded in many different ways. Just remember that it all boils down to the same basic components.
T-SQL Related Interview Questions
|PL/SQL Interview Questions||MSBI Interview Questions|
|SQL Database Interview Questions||MySQL Interview Questions|
|DB2 Using SQL Interview Questions||SQL DBA Interview Questions|
|SQL Interview Questions||PL/SQL and Informatica Interview Questions|
|SSIS(SQL Server Integration Services) Interview Questions||MYSQL DBA Interview Questions|
|PL/I Interview Questions||DB2 SQL Programming Interview Questions|
|SQL Server Analysis Services (SSAS) Interview Questions||NoSQL Interview Questions|
|SQL Server Architect Interview Questions|
T-SQL Related Practice Tests
|PL/SQL Practice Tests||MSBI Practice Tests|
|SQL Database Practice Tests||MySQL Practice Tests|
|DB2 Using SQL Practice Tests||SQL DBA Practice Tests|
|SQL Practice Tests||SSIS(SQL Server Integration Services) Practice Tests|
|MYSQL DBA Practice Tests||PL/I Practice Tests|
|DB2 SQL Programming Practice Tests|
Introducing T - Sql And Data Management Systems
Sql Server Fundamentals
Sql Server Tools
Introducing The T - Sql Language
Aggregation And Grouping
Multi - Table Queries
Advanced Queries And Scripting
T - Sql Programming Objects
Creating And Managing Database Objects
Analyzing And Optimizing Query Performance
T - Sql In Applications And Reporting
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