Re-Create Table make Faster.

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От Yudha Setiawan
Тема Re-Create Table make Faster.
Дата
Msg-id 006801c321c8$576af8f0$ea00a8c0@yudha
обсуждение исходный текст
Ответы Automatic error rollback can be harmful  ("Wayne Armstrong" <wdarmst@bacchus.com.au>)
Re: Re-Create Table make Faster.  (Robert Treat <xzilla@users.sourceforge.net>)
Список pgsql-general
Dear Milist,
 
One day i got a problem with my table,
It's have 35.000 records and 33 Fields.
I tried to do Update a 30% records from
it. And I also have an Match Index with
my condition on Update. Before Updating
the table, I did the Vacuum and Reindex.
That table, But it's still taken a long
time it's about 30 Minutes. I've tried
Vacuum and Reindex many times for that.
But it still take a long-long time. And
Finaly in the middle of my confusing and
disperate i tried to drop and recreate my
table again. And my "Update" is walking
so fast. But i still confusing of how
could be like that...????, Somebody give
me some explanation please.
 
Here it is my Structure of My Table
 
---------------+-----------------------------+----------------
 fc_branch     | character(6)                | not null
 fc_stockcode  | character(20)               | not null
 fv_stockname  | character varying(40)       | not null
 fm_valuestock | numeric(30,5)               | default 0
 fm_hpp        | numeric(30,5)               | default 0
 fn_onhand     | numeric(8,0)                | default 0
 fn_allocated  | numeric(8,0)                | default 0
 fn_valuealloc | numeric(18,0)               | default 0
 fn_tmpalloca  | numeric(8,0)                | default 0
 fv_colorname  | character varying(15)       |
 fv_colorcode  | character varying(15)       |
 fd_lastupdate | timestamp without time zone |
 fd_inputdate  | timestamp without time zone |
 fv_updateby   | character varying(8)        |
 fd_lastsales  | timestamp without time zone |
 fd_lastpurch  | timestamp without time zone |
 fc_divisi     | character(2)                |
 fc_brand      | character(2)                | not null
 fc_group      | character(2)                | not null
 fc_subgrp     | character(2)                | not null
 fc_type       | character(2)                | not null
 fc_pack       | character(2)                | not null
 fn_reorder    | numeric(8,0)                | default 0
 fn_outstpurch | numeric(8,0)                | default 0
 fn_outstsales | numeric(8,0)                | default 0
 fn_uninvoiced | numeric(18,0)               | default 0
 fn_valueuninv | numeric(18,0)               | default 0
 fn_openblnc   | numeric(8,0)                | default 0
 fn_maxpurch   | numeric(8,0)                | default 0
 fn_minpurch   | numeric(8,0)                | default 0
 fn_maxsales   | numeric(8,0)                | default 0
 fn_minsales   | numeric(8,0)                | default 0
 fn_maxstock   | numeric(8,0)                | default 0
 fn_minstock   | numeric(8,0)                | default 0
 fc_gradeinout | character(6)                | default 'SLOW'
 fc_hold       | character(3)                | default 'NO'
 fc_pictureclr | character(3)                | default 'NO'
 fc_report     | character(3)                | default 'NO'
 fn_volume     | numeric(9,5)                | default 0
 fm_lasthpp    | numeric(30,5)               | default 0
 fm_lastprice  | numeric(30,5)               | default 0
 fn_lastdisc1  | numeric(18,0)               | default 0
 fn_lastdisc2  | numeric(18,0)               | default 0
 fn_lastdisc3  | numeric(18,0)               | default 0
 ft_note       | text                        |
Indexes: pk_t_stock1 primary key btree (fc_branch, fc_stockcode),
         i_stock01 btree (fc_branch, fc_stockcode),
         i_stock02 btree (fc_branch, fv_stockname)        
         i_stock03 btree (fc_branch, fc_group)
And this is my "Update",
 
Update t_stock set fc_onhand = 50 where fc_branch = 'ABCDE' and fc_group = 'G1';
 
Thank's and GOD Bless U all.
 
 

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