OCA-OCP: introduction to Oracle9i SQL: study guide by Chip Dawes

By Chip Dawes

Study the fine details of 9i with the OCA/OCP: advent to Oracle9i SQL learn Guide. This free up from Sybex will arrange you for examination 1Z0-007, creation to Oracle9i: SQL. You get thousands of not easy evaluate questions within the ebook and at the CD and authoritative assurance of all examination targets.

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BECOME USER is used for full database imports and comes standard as part of the IMP_FULL_DATABASE role. GRANT ANY ROLE and GRANT ANY PRIVILEGE have no restrictions on the grantee. Chapter 10 discusses system privileges and their restrictions. 35. D. Revocations of object privileges cascade, but system and role privi- lege revocations do not. OL$ that Chip granted will be dropped when user Chip is dropped. For more information on database privileges, see Chapter 10. com Chapter 1 Basic SQL SELECT Statements INTRODUCTION TO ORACLE9i: SQL EXAM OBJECTIVES COVERED IN THIS CHAPTER: Writing Basic SQL Select Statements List the capabilities of SQL SELECT statements Execute a basic SELECT statement Restricting and Sorting Data Limit the rows retrieved by a query Sort the rows retrieved by a query Exam objectives are subject to change at any time without prior notice and at Oracle’s sole discretion.

Text The text literal must be enclosed in single quotation marks. Any character between the quotation marks is considered part of the text value. Oracle treats all text literals as though they were CHAR datatypes. The maximum length of a text literal is 4000 bytes. Single quotation marks can be included in the literal text value by preceding it with another single quotation mark. ” ' '12-SEP-2001' Integer Integer literals can be any number of numerals, excluding a decimal separator and up to 38 digits long.

Using the SELECT Statement The SELECT statement is the most commonly used statement in SQL. It allows you to retrieve information already stored in the database. The statement begins with the keyword SELECT, followed by the column names whose data you want to query. You can either select information from all the columns (denoted by *) or name specific columns in the SELECT clause to retrieve data. The FROM clause provides the name of the table, view, or materialized view to use in the query. These objects are discussed in detail in later chapters.

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