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Date: Fri, 21 Mar 2003 10:27:44 +0200
From: Popeanga Marian <pmarian@cnlo.ro>
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To: Rajesh Kumar Mallah <mallah@trade-india.com>
Cc: Roberto Mello <rmello@cc.usu.edu>, pgsql-sql@postgresql.org
Subject: Re: explain
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	<3E7AAF87.4070007@cnlo.ro>
	<200303211353.17208.mallah@trade-india.com>
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Thanks for your repply.

        This is what i expected too.  Can you point me from where i can 
get this result ?

explain select * from pg_tables where tablename=:tab;


select * from ... ?



In Oracle i will do:
explain plan set statement_id=uniq_id_for_select for  
                select * from dba_tables where table_name=:tab

SELECT * FROM plan_table WHERE Statement_ID = this_uniq_id_for_select;




Rajesh Kumar Mallah wrote:

>
>Dear Marian,
>
>in postgresql 7.3 explain commands retruns as
>set of rows.
>
>The result of EXPLAIN can just be fecthed as result
>of any other SELECT query and manipulated further.
>
>i hope it helps.
>
>sorry if i did not get ur problem rite.
>
>
>regds
>mallah.
>
>
>
>
>On Friday 21 Mar 2003 11:51 am, Popeanga Marian wrote:
>  
>
>>Roberto Mello wrote:
>>
>>    
>>
>>>On Fri, Mar 21, 2003 at 07:46:01AM +0200, Popeanga Marian wrote:
>>> 
>>>
>>>      
>>>
>>>>Hello all,
>>>>
>>>>
>>>>          Can someone point me how can i make explain plan for a query?
>>>>   
>>>>
>>>>        
>>>>
>>>explain select blah from foo where bar = baz;
>>>
>>>\h explain
>>>
>>>Look at the PostgreSQL documentation (SQL Reference).
>>>
>>>-Roberto
>>>
>>> 
>>>
>>>      
>>>
>>   I have look at this command. I want to know how can i make this from 
>>other tool than pgsql.
>>In oracle when i issue an explain plan the explain insert values into a 
>>table ( plan_table ).
>>Then i could select the values from plan_table.         Is there similar 
>>in postgres ?
>>
>>-- 
>>Popeanga Marian
>>DBA Oracle
>>CNLO Romania
>>
>>
>>
>>    
>>
>
>  
>

-- 
Popeanga Marian
DBA Oracle
CNLO Romania



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Thanks for your repply.<br>
<br>
&nbsp; &nbsp; &nbsp; &nbsp; This is what i expected too. &nbsp;Can you point me from where i can get
this result ?<br>
<br>
explain select * from pg_tables where tablename=:tab;<br>
<br>
<br>
select * from ... ?<br>
<br>
<br>
<br>
In Oracle i will do:<br>
explain plan set statement_id=uniq_id_for_select for &nbsp; <br>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; select * from dba_tables where table_name=:tab<br>
<br>
SELECT * FROM plan_table WHERE Statement_ID = this_uniq_id_for_select;<br>
<br>
<br>
<br>
<br>
Rajesh Kumar Mallah wrote:<br>
<blockquote type="cite"
 cite="mid200303211353.17208.mallah@trade-india.com">
  <pre wrap="">

Dear Marian,

in postgresql 7.3 explain commands retruns as
set of rows.

The result of EXPLAIN can just be fecthed as result
of any other SELECT query and manipulated further.

i hope it helps.

sorry if i did not get ur problem rite.


regds
mallah.




On Friday 21 Mar 2003 11:51 am, Popeanga Marian wrote:
  </pre>
  <blockquote type="cite">
    <pre wrap="">
Roberto Mello wrote:

    </pre>
    <blockquote type="cite">
      <pre wrap="">On Fri, Mar 21, 2003 at 07:46:01AM +0200, Popeanga Marian wrote:
 

      </pre>
      <blockquote type="cite">
        <pre wrap="">Hello all,


          Can someone point me how can i make explain plan for a query?
   

        </pre>
      </blockquote>
      <pre wrap="">explain select blah from foo where bar = baz;

\h explain

Look at the PostgreSQL documentation (SQL Reference).

-Roberto

 

      </pre>
    </blockquote>
    <pre wrap="">   I have look at this command. I want to know how can i make this from 
other tool than pgsql.
In oracle when i issue an explain plan the explain insert values into a 
table ( plan_table ).
Then i could select the values from plan_table.         Is there similar 
in postgres ?

-- 
Popeanga Marian
DBA Oracle
CNLO Romania



    </pre>
  </blockquote>
  <pre wrap=""><!---->
  </pre>
</blockquote>
<br>
<pre class="moz-signature" cols="$mailwrapcol">-- 
Popeanga Marian
DBA Oracle
CNLO Romania
</pre>
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