原文:oracle comment on的用法

轉:http: www. cto.com database .html oracle中用comment on命令給表或字段加以說明,語法如下:COMMENT ON TABLE schema. table view COLUMN schema. table. view. materialized view. column OPERATOR schema. operator INDEXTYPE sch ...

2019-10-22 15:45 0 692 推薦指數:

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mysql中的comment用法

轉自:http://wenku.baidu.com/view/2a54e7892cc58bd63186bd8f.html 在MySQL數據庫中,字段或列的注釋是用屬性comment來添加。創建新表的腳本中,可在字段定義腳本中添加comment屬性來添加注釋。示例代碼如下:create table ...

Sat Jun 13 17:07:00 CST 2015 0 39890
ORACLE WITH AS 用法

Posted on 2012-10-11 15:05 寬田 閱讀(26011) 評論(0) 編輯 收藏 語法: with tempName as (select ....) ...

Sun Mar 19 01:45:00 CST 2017 0 1582
ORACLE WITH AS 用法

語法: with tempName as ( select ....) select ... 例:現在要從1-19中得到11-14。一般的sql ...

Thu Oct 11 23:05:00 CST 2012 0 88519
關於oracle with as用法

with as語法–針對一個別名with tmp as (select * from tb_name) –針對多個別名with tmp as (select * from tb_name), ...

Tue Jun 25 00:06:00 CST 2013 0 100689
ORACLE WITH AS 用法

With查詢語句不是以select開始的,而是以“WITH”關鍵字開頭 可認為在真正進行查詢之前預先構造了一個臨時表,之后便可多次使用它做進一步的分析和處理 WITH Clause方法的優點 ...

Tue Jan 16 18:21:00 CST 2018 0 98220
關於oracle with as用法

轉自:https://www.cnblogs.com/linjiqin/archive/2013/06/24/3152667.html with as語法–針對一個別名with tmp as (se ...

Thu Jul 25 03:34:00 CST 2019 0 419
 
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