Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.databases.postgresql > #844 > unrolled thread

issue with UPDATE

Back to article view | Back to comp.databases.postgresql

Contents

  issue with UPDATE lboc80@gmail.com - 2018-10-05 09:44 -0700
    Re: issue with UPDATE Robert Klemme <shortcutter@googlemail.com> - 2018-10-06 13:17 +0200

#844 — issue with UPDATE

I'm stuck with an UPDATE, probably I'm messing something up:


the amount of rows in the '`proj_los`' table expected to be updated are 32, but only 8 get updated, unless I add an AND condition.

    select count(*) from import.tmp_kk where root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e';
    > 32
    
    
  
  
1) correct result -> using last AND clause (`root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e'`)

    
    sql> update
           proj_los as oko
           set lo_root_id = import.tmp_kk.root_id
           from import.tmp_kk
           where oko.lo_id = import.tmp_kk.lo_id
           and import.tmp_kk.root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e'
    [2018-10-05 18:13:59] 32 rows affected in 50 ms
    
    
    select count(*) from proj_los where lo_root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e';
    
    > 32
    
    
    
    
2) wrong result
    
    sql> update
             proj_los as oko
           set lo_root_id = import.tmp_kk.root_id
           from import.tmp_kk
           where oko.lo_id = import.tmp_kk.lo_id;
    [2018-10-05 18:17:31] 174202 rows affected in 17 s 427 ms
    
    select count(*) from proj_los where lo_root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e';
    
    > 8

Any help on this?

[toc] | [next] | [standalone]

#845

On 05.10.2018 18:44, lboc80@gmail.com wrote:
> I'm stuck with an UPDATE, probably I'm messing something up:
> 
> 
> the amount of rows in the '`proj_los`' table expected to be updated are 32, but only 8 get updated,

No, 174202 get updated.

> unless I add an AND condition.
> 
>      select count(*) from import.tmp_kk where root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e';
>      > 32
>      
>      
>    
>    
> 1) correct result -> using last AND clause (`root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e'`)
> 
>      
>      sql> update
>             proj_los as oko
>             set lo_root_id = import.tmp_kk.root_id
>             from import.tmp_kk
>             where oko.lo_id = import.tmp_kk.lo_id
>             and import.tmp_kk.root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e'
>      [2018-10-05 18:13:59] 32 rows affected in 50 ms
>      
>      
>      select count(*) from proj_los where lo_root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e';
>      
>      > 32
>      
>      
>      
>      
> 2) wrong result
>      
>      sql> update
>               proj_los as oko
>             set lo_root_id = import.tmp_kk.root_id
>             from import.tmp_kk
>             where oko.lo_id = import.tmp_kk.lo_id;
>      [2018-10-05 18:17:31] 174202 rows affected in 17 s 427 ms
>      
>      select count(*) from proj_los where lo_root_id = '57b2e67b-5862-499a-a471-0f2f6b23440e';
>      
>      > 8
> 
> Any help on this?
> 


-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/

[toc] | [prev] | [standalone]

Back to top | Article view | comp.databases.postgresql

csiph-web