Postgres Pro
Downloads
Home   >   mailing lists

Thread: Sending lot of records

Sending lot of records

From
"Simeo Reig"
Date:
Hi, I have this simple procedure, that it's connecting to a remote DB and
it's too slow. It seems an ado problem because if
I use pgsql it's very fast. I understand that this query must send only one
record, but if I sniff the session (sniffit) I can see that
postgres is sending a lot of records, why ???


PD : Postgresql 7.1.3 under freeBSD 4.5-prerelease

Thanks a lot
Simeó Reig


Dim rsConexioDadesGenerals As ADODB.Recordset
Dim SQLDadesGenerals As String

Set rsConexioDadesGenerals = New ADODB.Recordset
    ---- identitatinforme is a primary key
SQLDadesGenerals = "SELECT nomentitatinforme FROM entitatsinformes WHERE
identitatinforme=" & idSocietatActual    With rsConexioDadesGenerals
        .LockType = adLockOptimistic
        .CursorType = adOpenKeyset
        .CursorLocation = adUseClient
        --conexioADO is a global connection
        .Open SQLDadesGenerals, conexioADO, adOpenDynamic
        Set AdodcTaulaDadesGenerals.Recordset = rsConexioDadesGenerals
   End With

msgbox AdodcTaulaDadesGenerals.Recordset.recordcount -- return 1

Re: Sending lot of records

From
"Simeo Reig"
Date:
If I make  select nomsocietat from entitatsinformes where identitatinforme
like '1234'; works (note the semicolon and
like) but if I don't put semicolon it's very slow (catch hundreds of rows) .
identitatinformes is a primary key but is filled
with a sequence, should have to cast to integer ?? why ??

societats=# \d entitatsinformes
                                                Table "entitatsinformes"
         Column          |          Type          |
Modifiers
-------------------------+------------------------+-------------------------
--------------------------------------------
 identitatinforme        | integer                | not null default
nextval('"entitatsinfor_identitatinfo_seq"'::text)
 nomentitatinforme       | character varying(75)  | not null
 idadreca                | integer                |
 idpoblacio              | integer                |
 idtipusadreca           | integer                |
 idcarrer                | integer                |
 ... snip ...
 horaultimamodificacio   | time                   | not null default
"time"('now'::text)
Primary key: entitatsinformes_pkey

thanks !

----- Original Message -----
Sent: Friday, January 04, 2002 11:29 PM
Subject: [ODBC] Sending lot of records


> Hi, I have this simple procedure, that it's connecting to a remote DB and
> it's too slow. It seems an ado problem because if
> I use pgsql it's very fast. I understand that this query must send only
one
> record, but if I sniff the session (sniffit) I can see that
> postgres is sending a lot of records, why ???
>
>
> PD : Postgresql 7.1.3 under freeBSD 4.5-prerelease
>
> Thanks a lot
> Simeó Reig
>
>
> Dim rsConexioDadesGenerals As ADODB.Recordset
> Dim SQLDadesGenerals As String
>
> Set rsConexioDadesGenerals = New ADODB.Recordset
>     ---- identitatinforme is a primary key
> SQLDadesGenerals = "SELECT nomentitatinforme FROM entitatsinformes WHERE
> identitatinforme=" & idSocietatActual    With rsConexioDadesGenerals
>         .LockType = adLockOptimistic
>         .CursorType = adOpenKeyset
>         .CursorLocation = adUseClient
>         --conexioADO is a global connection
>         .Open SQLDadesGenerals, conexioADO, adOpenDynamic
>         Set AdodcTaulaDadesGenerals.Recordset = rsConexioDadesGenerals
>    End With
>
> msgbox AdodcTaulaDadesGenerals.Recordset.recordcount -- return 1
>
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>

Re: Sending lot of records

From
"Henshall, Stuart - WCP"
Date:
Does this use the Jet engine? I know I can't open dynamic recordsets in
Access 2000 with DAO without using Jet, so that might be the culprit for the
multiple record transfer. Also = should be faster than like of course. Have
you Vacuumed Analysed? If the query performs well under psql then see if you
can get an explicit pass-through query maybe?
- Stuart

-----Original Message-----
From: Simeo Reig [mailto:simreig@terra.es]
Sent: 04 January 2002 23:35
To: pgsql-odbc@postgresql.org
Subject: Re: Sending lot of records


If I make  select nomsocietat from entitatsinformes where identitatinforme
like '1234'; works (note the semicolon and
like) but if I don't put semicolon it's very slow (catch hundreds of rows) .
identitatinformes is a primary key but is filled
with a sequence, should have to cast to integer ?? why ??

societats=# \d entitatsinformes
                                                Table "entitatsinformes"
         Column          |          Type          |
Modifiers
-------------------------+------------------------+-------------------------
--------------------------------------------
 identitatinforme        | integer                | not null default
nextval('"entitatsinfor_identitatinfo_seq"'::text)
 nomentitatinforme       | character varying(75)  | not null
 idadreca                | integer                |
 idpoblacio              | integer                |
 idtipusadreca           | integer                |
 idcarrer                | integer                |
 ... snip ...
 horaultimamodificacio   | time                   | not null default
"time"('now'::text)
Primary key: entitatsinformes_pkey

thanks !

----- Original Message -----
Sent: Friday, January 04, 2002 11:29 PM
Subject: [ODBC] Sending lot of records


> Hi, I have this simple procedure, that it's connecting to a remote DB and
> it's too slow. It seems an ado problem because if
> I use pgsql it's very fast. I understand that this query must send only
one
> record, but if I sniff the session (sniffit) I can see that
> postgres is sending a lot of records, why ???
>
>
> PD : Postgresql 7.1.3 under freeBSD 4.5-prerelease
>
> Thanks a lot
> Simeó Reig
>
>
> Dim rsConexioDadesGenerals As ADODB.Recordset
> Dim SQLDadesGenerals As String
>
> Set rsConexioDadesGenerals = New ADODB.Recordset
>     ---- identitatinforme is a primary key
> SQLDadesGenerals = "SELECT nomentitatinforme FROM entitatsinformes WHERE
> identitatinforme=" & idSocietatActual    With rsConexioDadesGenerals
>         .LockType = adLockOptimistic
>         .CursorType = adOpenKeyset
>         .CursorLocation = adUseClient
>         --conexioADO is a global connection
>         .Open SQLDadesGenerals, conexioADO, adOpenDynamic
>         Set AdodcTaulaDadesGenerals.Recordset = rsConexioDadesGenerals
>    End With
>
> msgbox AdodcTaulaDadesGenerals.Recordset.recordcount -- return 1
>
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>

Listen / Notify

From
"Simeo Reig"
Date:
Hi, is it possible to receive Notify's from VB ? It seems that isn't
possible ! thanks in advance

Simeó Reig