Select Queries

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  • Used for fetching information from an SQL database.
  • 'Outputs' the data once successfully selected
  • Allows selection from multiple tables but not multiple databases.

The Basic Construct

  SELECT `data` FROM `TABLE`
  WHERE `Condtion`
  ORDER BY `TABLE` ASC / DESC ;

Basic Example

SELECT *
FROM  Book
WHERE price > 100.00
ORDER BY title;

Remember the select' can have * to select all fields, however questions will normally specify what fields to select. The from section should identify which table(s) to select the data from. The where section should include the criteria used to select the data, this could be a simple statement as above but remember you can also include other operators such as and or not like and so on.