12 2011 档案

TTS, not used for schema exp/imp
摘要: TTS is not designed to replace schema level exp/imp阅读全文
posted @ 2011-12-16 11:18 fangwen.YU 阅读(27) | 评论 (0) 编辑
String Aggregation: varchar VS clob
摘要: The differences between the functions that return CLOB and VARCHAR2 used in SQL statement阅读全文
posted @ 2011-12-11 09:39 fangwen.YU 阅读(49) | 评论 (0) 编辑
Watch out LOB operation!
摘要: Abuse of LOB in SQL is nightmare. This article gives out an example on the efficiency of LOB operation.阅读全文
posted @ 2011-12-08 20:24 fangwen.YU 阅读(31) | 评论 (0) 编辑