Q:

Write a PL/SQL block to show a reserved word can be used as a user-define identifier

hamza
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2022-05-18
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Write a PL/SQL block to show a reserved word can be used as a user-define identifier.

In the example below quoted user-defined identifiers "DECLARE", "Declare", and "declare" have been declared. The word DECLARE, Declare and declare represent the same reserved word, "DECLARE", "Declare", and "declare" represent different identifiers.

pl/sql,
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hamza
2022-05-18
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DECLARE
  "DECLARE" varchar2(25) := 'This is UPPERCASE';
  "Declare" varchar2(25) := 'This is Proper Case';
  "declare" varchar2(25) := 'This is lowercase';
BEGIN
  DBMS_Output.Put_Line("DECLARE");
  DBMS_Output.Put_Line("Declare");
  DBMS_Output.Put_Line("declare");
END;
/

Sample Output:

This is UPPERCASE
This is Proper Case
This is lowercase

Statement processed.

0.16 seconds

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