-- table中使用註釋
-- 一般方法
comment on table comment_table is '註釋表示例';
comment on column comment_table.id is '主鍵ID';
-- 使用動態sql
BEGIN
execute immediate 'COMMENT ON column comment_table.id IS ''主鍵ID''';
END;


-- sql中使用註釋
-- 單行註釋
SELECT suppliers.supplier_id
/* Author: TechOnTheNet.com */
FROM suppliers;
-- 多行註釋
SELECT suppliers.supplier_id
/*
 * Author: TechOnTheNet.com
 * Purpose: To show a comment that spans multiple lines in your SQL statement.
 */
FROM suppliers;