Basic Statements
During PL/SQL programming, you may define some variables, assign values to variables, and call other stored procedures. The following sections describe basic PL/SQL statements, including variable definition statements, value assignment statements, call statements, and return statements.
You are not advised to call the SQL statements containing passwords in the stored procedures because authorized users may view the stored procedure file in the database and password information is leaked. If a stored procedure contains other sensitive information, permission to access this procedure must be configured, preventing information leakage.
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