Oracle 表注释和SQL注释

-- table中使用注释
-- 一般方法
comment on table comment_table is '注释表示例';
comment on column comment_table.id is '主键ID';
-- 使用动态sql
BEGIN
execute immediate 'COMMENT ON column comment_table.id IS ''主键ID''';
END;
-- sql中使用注释
-- 单行注释
SELECT suppliers.supplier_id
/* Author: TechOnTheNet.com */
FROM suppliers;
-- 多行注释
SELECT suppliers.supplier_id
/*
 * Author: TechOnTheNet.com
 * Purpose: To show a comment that spans multiple lines in your SQL statement.
 */
FROM suppliers;