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Databases Reporting with SQL Working with Text Adding Text Columns Together

Posted by Rushabha Jain
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Rushabha Jain
Front End Web Development Techdegree Student 9,859 Points

What SELECT keyword actually do?

We used SELECT keyword to select particular columns in the row, how can SELECT keyword is performing operations?

1 Answer

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

The select keyword is the clause that allows you to select what data fields will be returned in your query.

Let's say for example you have a table called "movies" that has 5 fields.

  • Title
  • Age Restriction
  • Director
  • Runtime
  • Main Lead

But you wanted to run a query that only selected 3 of those fields. You'd write

SELECT Title, Director, Runtime FROM movies;

Or to select them all quickly you'd do.

SELECT * FROM movies;

Those are the very basics of the select clause.

Rushabha Jain
.a{fill-rule:evenodd;}techdegree
Rushabha Jain
Front End Web Development Techdegree Student 9,859 Points

Hi Jonathan Grieve,

Thank you for your input, but what about this, SELECT UPPER('Hello');

Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

This an SQL function that converts the string that is passed into Uppercase i.e. Capital letters.

You might use it for example to convert the records of a given column into upper case text.