Re: inquiry
От | Jinqiang Han |
---|---|
Тема | Re: inquiry |
Дата | |
Msg-id | 200303271005578.SM01100@wxr обсуждение исходный текст |
Ответ на | inquiry ("Jinqiang Han" <postgresql@db.pku.edu.cn>) |
Ответы |
Re: inquiry
|
Список | pgsql-hackers |
hi,Bruce Momjian I think you are wrong. multiple query in a string, such as ""SELECT;SELECT" will invoke pg_execute_query_string twice, Itwon't generate two parsetree. ======= 2003-03-26 10:20:00 您在来信中写道:======= >Jinqiang Han wrote: >> hello, >> >> I have read the source code of postgres.c. Two strang things I can't understand. >> Souce code of Postgres.c: >> .. >> Foreach(parsetree_list的元素parsetree){ //In what situation here will be many parsetrees? >> … > >You can send multiple queries in a single string, "SELECT;SELECT". > >> (List *)querytree_list = pg_analyze_and_rewrite(parsetree); >> foreach(querytree_list中的每个querytree){ //In what situation here will be many querytrees? > >A RULE may have additional queries to fire. > >> >> Who can tell me the reason? >> Thank you very much >> >> Jinqiang Han >> >> >> ---------------------------(end of broadcast)--------------------------- >> TIP 5: Have you checked our extensive FAQ? >> >> http://www.postgresql.org/docs/faqs/FAQ.html >> > >-- > Bruce Momjian | http://candle.pha.pa.us > pgman@candle.pha.pa.us | (610) 359-1001 > + If your life is a hard drive, | 13 Roberts Road > + Christ can be your backup. | Newtown Square, Pennsylvania 19073 > >. = = = = = = = = = = = = = = = = = = = =
В списке pgsql-hackers по дате отправления: