Re: insert Q
- From: "polilop" <fmatosic@xxxxxxx>
- Date: Tue, 8 Nov 2005 01:11:23 +0100
Been following your advice,did not realize what loss of connection's i was
making. Allso the idea of using access views is so clean and easier (not so
many sql statements on the page).
cannot express my gratitude for the help, now my work seems to look a bit
more serius.
THX again.
"POLILOP" <fmatosic@@inet.hr> wrote in message
news:eE5Q2f54FHA.268@xxxxxxxxxxxxxxxxxxxxxxx
> Thx for patience and information
> this has been more then helpful
>
> "Bob Barrows [MVP]" <reb01501@xxxxxxxxxxxxxxx> wrote in message
> news:O8RXoS54FHA.3188@xxxxxxxxxxxxxxxxxxxxxxx
>> POLILOP wrote:
>>>> Nope. I meant that you should not use a string as a Command's
>>>> ActiveConnection. Use an explicit Connection object/
>>>>
>>> Little more Help
>>>
>>> if i'm not mistaken this should be explicit
>>>
>>> cst = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
>>> "Data Source=" & Server.MapPath("/<pathtofile.mdb>")
>>>
>>> set conn = CreateObject("ADODB.Connection")
>>> conn.open cst
>>
>> Correct
>>>
>>> 1. so i execute the sql with
>>> conn.execute SQL
>>
>> Sort of. When you use a connection's Execute method, a Command object is
>> created in the background to do the actual execution. Implicit Command
>> objects are OK.
>>
>> In addition, always tell ADO what type of command you are executing and
>> if you don't expect the command to return records.
>> 1 = adCmdText - a string containing a sql statement
>> 128 = adExecuteNoRecords - no records are being returned so don't create
>> a recordset to retrieve them
>>
>> These can be combined by adding them to get 129:
>>
>> conn.execute SQL,,129
>>
>>> or read recordsets with conn.Fields.Item("ITEM").value
>>
>> No, don't do this. Always use an explicit recordset object:
>>
>> Set rs = conn.execute(SQL,,1)
>>
>>> (still puzzled whats the difference)
>>
>> The documentation can be found at
>> http://msdn.microsoft.com/library/en-us/ado270/htm/dasdkadooverview.asp
>>
>> Basically:
>> A Connection object implements the connection to the database.
>> A Command object executes a command (can be a query, the name of a table,
>> or a stored procedure)
>> A Recordset object contains the results of the execution of a command
>> that returns records (a select statement or a stored procedure/saved
>> query that contains a select statement)
>>
>> You should control when these objects are created and destroyed (set to
>> nothing), because
>> 1. They are "heavy" objects, especially the recordset, so needlessly
>> allowing it to be created can waste resources
>> 2. Failure to close and destroy them in the proper order can lead to
>> memory leaks which can ultimately crash IIS. The idea is to close and
>> destroy the child objects (recordsets) before closing and destroying the
>> parent object (connection)
>>>
>>> 2, wondering, if i have the conn.open can i do different SQL
>>> statments
>>
>> Yes, of course.
>>
>>> Before closing it ( I need to make a select, put a Rs into
>>> a variable and then make a insert with that variable being a value ?
>>
>> Yes, use a single Connection object.
>>
>> My recommendation is to avoid using dynamic sql due to the dangers of sql
>> injection:
>> http://mvp.unixwiz.net/techtips/sql-injection.html
>> http://www.sqlsecurity.com/DesktopDefault.aspx?tabid=23
>>
>> I prefer using stored procedures (saved parameter queries in Access):
>> http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&c2coff=1&selm=eHYxOyvaDHA.4020%40tk2msftngp13.phx.gbl
>> http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&c2coff=1&selm=ukS%246S%247CHA.2464%40TK2MSFTNGP11.phx.gbl
>> http://www.google.com/groups?selm=eETTdnvFDHA.1660%40TK2MSFTNGP10.phx.gbl&oe=UTF-8&output=gplain
>> http://www.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=e6lLVvOcDHA.1204%40TK2MSFTNGP12.phx.gbl
>>
>> But you can also use an explicit Command object to pass parameters to a
>> string containing ODBC parameter markers:
>> http://groups-beta.google.com/group/microsoft.public.inetserver.asp.db/msg/72e36562fee7804e
>>
>> Bob Barrows
>> --
>> Microsoft MVP - ASP/ASP.NET
>> Please reply to the newsgroup. This email account is my spam trap so I
>> don't check it very often. If you must reply off-line, then remove the
>> "NO SPAM"
>>
>
>
.
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