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SQL Tutorial for Beginners

bookMeet the SQL

SQL is a Structured Query Language created for accessing and manipulating data stored in databases. There are different versions of SQL and databases management systems that use SQL such as Microsoft SQL Server, PostgreSQL, MySQL, Oracle, etc.

There may be some specific knowledge needed for each DBMS, but at all, they use SQL with similar syntax. Using SQL, you can:

  • Create, change, delete and manipulate the tables
  • Create, change, delete and manipulate the data
  • Access and retrieve the data (records)
  • Create stored procedures in the database
  • Set permissions for procedures and tables

There is even an extension of SQL that lets you use it as a standard programming language: create variables, loops, if-else statements, and so on.

So let's submit the very first SQL query which shows all the data in the table songs.

Task

Swipe to start coding

Let's practice a bit. Write the next code:

SELECT * FROM songs

Then submit your first SQL query! Read about the SQL SELECT statement in the next chapter.

Solution

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SectionΒ 1. ChapterΒ 1
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bookMeet the SQL

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SQL is a Structured Query Language created for accessing and manipulating data stored in databases. There are different versions of SQL and databases management systems that use SQL such as Microsoft SQL Server, PostgreSQL, MySQL, Oracle, etc.

There may be some specific knowledge needed for each DBMS, but at all, they use SQL with similar syntax. Using SQL, you can:

  • Create, change, delete and manipulate the tables
  • Create, change, delete and manipulate the data
  • Access and retrieve the data (records)
  • Create stored procedures in the database
  • Set permissions for procedures and tables

There is even an extension of SQL that lets you use it as a standard programming language: create variables, loops, if-else statements, and so on.

So let's submit the very first SQL query which shows all the data in the table songs.

Task

Swipe to start coding

Let's practice a bit. Write the next code:

SELECT * FROM songs

Then submit your first SQL query! Read about the SQL SELECT statement in the next chapter.

Solution

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

close

Awesome!

Completion rate improved to 4.17
SectionΒ 1. ChapterΒ 1
single

single

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