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Building Queries: Part 1

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All operations on information in an Oracle database are performed by using SQL statements. A SQL statement is a string of SQL text. The SQL SELECT statement is the command that retrieves data from the XE tables.

Sheila will use the SQL SELECT statement to:

  • Write queries
  • Create SELECT statements that restrict rows
  • Sort output
  • Display data from many tables
  • Customize output with functions embedded in the SELECT statement