Re: [GENERAL] :Posgres - performance problem

2015-03-25 Thread ginkgo36
@Gary I'm working on big data, because of the demands of the job so I export/import/update data on this table every day. I guess it's possible that each query would need all 417 columns but it seems unlikely... --> Yes, not at all but 2/3 of 417 columns :) I need gather data into one table for

[GENERAL] :Posgres - performance problem

2015-03-25 Thread ginkgo36
Hi all, I have 1 table have: - 417 columns - 600.000 rows data - 34 indexs when i use query on this table, it so long. ex: update master_items set temp1 = '' where temp1 <> '' --Query returned successfully: 435214 rows affected, 1016137 ms execution time. alter table master_items add "TYPE-DE"

[GENERAL] Help function to sort string

2013-10-17 Thread ginkgo36
Hi everyone, Please hepl me this function: 1. I want to sort string follow anphabet and I used this query: select string_agg(x, ';') from (select trim(unnest(regexp_split_to_array('ECD FORM; BODY; PREDILUTED; CHROMO-GENIC; AUTO;RABBIT; FORMAT',';'))) x order by x) a; -- result: AUTO; BODY; CHROMO

Re: Fwd: [GENERAL] String reverse funtion?

2013-10-15 Thread ginkgo36
Hi everyone, Please hepl me this function: 1. I want to sort string follow anphabet and I used this query: select string_agg(x, ';') from (select trim(unnest(regexp_split_to_array('ECD FORM; BODY; PREDILUTED; CHROMO-GENIC; AUTO;RABBIT; FORMAT',';'))) x order by x) a; -- result: AUTO; BODY; CH

[GENERAL] String reverse funtion?

2013-10-10 Thread ginkgo36
Hello everyone I have to reverse a string like EA;BX;CA to CA;BX;EA. or EA,BX,CA to CA,BX,EA Is there any function to do this? Thanks all! -- View this message in context: http://postgresql.1045698.n5.nabble.com/String-reverse-funtion-tp5773871.html Sent from the PostgreSQL - general maili

Re: [GENERAL] String reverse funtion?

2013-10-09 Thread ginkgo36
Thanks alot everyone, Actually, I just start learning about Programming language. So, each your solution is a good suggestion for me to learning. Thanks so much. Please help me one User-defined Functions to solves this when my data like this: EA;BX;CA CA;EA BX;EA And when run UDFs, output is: CA;BX