:-(

唔想出 trip….

原本諗住有老公陪, 就算冇得響香港過年都冇乜所謂….點知唔見左佢本 passport…得返我一個人去….

好 down….

周星馳同譚玉瑛主持既430有董敏莉唱歌?

IT stuff – oracle hard parse

今日學咗啲野, 想寫低佢…冇乜特別架

copied from this: http://www.dba-oracle.com/t_hard_vs_soft_parse_parsing.htm

Oracle hard-parse vs. soft parse

Oracle SQL is parsed before execution, and a hard parse includes these steps:

1. Loading into shared pool – The SQL source code is loaded into RAM for parsing. (the “hard” parse step)

2. Syntax parse – Oracle parses the syntax to check for misspelled SQL keywords.

3. Semantic parse – Oracle verifies all table & column names from the dictionary and checks to see if you are authorized to see the data.

4. Query Transformation - If enabled (query_rewrite=true), Oracle will transform complex SQL into simpler, equivalent forms and replace aggregations with materialized views, as appropriate.

5. Optimization – Oracle then creates an execution plan, based on your schema statistics (or maybe with statistics from dynamic sampling in 10g).

6. Create executable - Oracle builds an executable file with native file calls to service the SQL query

wah

太耐太耐無update喇, 是但寫D野先…..

轉載

「呢個夏天真係好熱，仲要係下午出去影婚紗相，真係有Ｄ殘忍…..對個新郎哥黎講，不過呢次個新郎真係好堅，成日著住套tux都話唔熱，仲要唔多見Ｄ汗，堅呀！

btw, 個花球我自己整架, 算係咁啦~

材料如下, 小象耳 , 米蘭玫蕾 (米色), 茶花 (綠色), 芙蓉牡丹 (米色), 紅豆 (粉紅色)

倒數…

仲有八日 ^^

RIP

^^

太好喇, 太好喇, 太好喇!

>.<

天文台唔準, 天文台唔準, 天文台唔準….

hate this…

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