June 2023
Intermediate to advanced
480 pages
12h 39m
English
Content preview from Oracle PL/SQL by Example, 6th Edition
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A
PL/SQL Formatting Guide
This appendix summarizes some of the PL/SQL formatting guidelines used throughout this book. Although formatting guidelines are not a required part of PL/SQL, they act as best practices that facilitate development of better-quality code, greater readability, and easier maintenance.
Case
PL/SQL, like SQL, is case insensitive. The general guidelines regarding case are as follows:
Use uppercase for keywords (for example,
BEGIN,EXCEPTION,END,IF-THEN-ELSE,LOOP,END LOOP), data types (for example,VARCHAR2,NUMBER), built-in functions (for example,LEAST,SUBSTR), and user-defined subroutines (for example, procedures, functions, packages).Use lowercase for variable names as well as column and table names in SQL.
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