Moving From MySQL - Question
Mar 19, 2004
Hello,
I recently moved from MySQL (after 1 year of experience) to MS SQL Server as my company moved from MySQL to MS SQL Server so I am in the learning stage.
I just wanted to know how you start up logging in SQL Server. I mean I want to log all the queries that are being executed against the server. I dont mean the binary logs but Actual query logging. Since I will be the admin I want to queries executed against all the databases.
Is it possible?
Regards
Karam
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Apr 9, 2008
Hi gang,
This is a cross-post from the MSDN Managed Newsgroups, which I never seem to get a response on... hoping someone over here can help me out!
I am having a problem and could also use some help understanding something...
We have a DB in MySQL (5.0.51) that I am transferring to SQL Server 2K5
using DTS. I am going through the MySQL ODBC v3.51 driver, and bringing data
over via query.
My query is just SELECT * FROM <table>, and it take approximately 1 minute
to run on the MySQL server.
First, the problem... the source table is 5 columns (2-ints, 1-float,
2-varchar(255)s) and 22M rows. Looks to me like about 600MB of data.
When I go through the DTS wizard it runs for about an hour and then I get a
"MySQL client out of memory" error. After a bit of research, I found a
switch in the ODBC driver to use forward-only cursors, which seems to have
alleviated that problem, however... and this is where I need help in
understanding the process, when I get to the page in the wizard where I enter
the query, I click next, and the machine gets busy for an hour. Looking at
the processes on the MySQL server, I can see the entire result set is
streaming across the wire to my SQL Server box. Then the page comes back,
and I specify the table to import into, click Edit Mappings... and wait for
another 30+ minutes for the mapping screen to come up. Once I enter the
mappings, I can complete the wizard, but the Performing Operation page takes
about an hour again to complete.
The duration of all of this seems ridiculous to me... especially in moving
such a (relatively) trivial amount of data (MySQL server has 100s of gigs of
hard drive space available, plus 8GB or RAM, and my SQL Server box has 3GBs
of RAM and plenty of drive space... plus we are running gigabit ethernet).
It appears that the query page is retrieving all of the rows just to take me
to the page where I map the columns. That, assumedly, is the case because on
that page I can Preview the data. Is there any way to supress this?
Is there anything anyone can suggest to speed this whole ordeal up?
I am wondering (haven't tried this yet), if I save the DTS Package and run
that if it will execute more rapidly because much of the work is already done
by that point.
Any info would be greatly appreciated!
Cheers,
Chris
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Nov 9, 2006
Problem: Moving data from mysql to sql server 2005
I am trying to pull data over from mysql to sql server. First the import wizard greys out so I have to put in 1 query at a time which is pain. and second it does not even work! it takes me through the end of the wizard for me to click finish and then says oops it does not work. there was an error!
Anyway i tried going through the ssis route cuz its going to be a nightly job. i used the ado.net odbc connection. It worked but the performance is really not acceptable. it took 5 mins to import 24000 rows where as dts was taking 1 sec to do this. i wish i could use the native mysql odbc 3.51 connector and import. can some one give me step by step instructions on how to do that ?
I hear someone mentioned of using excute sql task which can use mysql odbc 3.51 driver. but since i am new how do i get it to work. say for example in the excute sql task i run a statement like select * from addr. then what?
cuz eventually i want the result to be saved in a sql server table called addr. How can i get the result from that excute sql task and put it inside of an addr table in sql server. should i save the result to a variable of type object. but then how do i get the data from object and tell sql server in the designer that the result contains these columns and it needs to map to these columns in the addr table of sql server.
Very confused. i wish the first option would have given me results which an enterprise ETL gives. but apparently it is too slow that it wont be acceptable in a production envrioment. when i will have millions of rows coming in .
Please anyone can help me in this.
Thanks for the help!
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Feb 12, 2007
Good Morning
Has anyone successfully used cherry's oledb provider for MYSQL to create a linked server from MS SQLserver 2005 to a Linux red hat platform running MYSQL.
I can not get it to work.
I've created a UDL which tests fine. it looks like this
[oledb]
; Everything after this line is an OLE DB initstring
Provider=OleMySql.MySqlSource.1;Persist Security Info=False;User ID=testuser;
Data Source=databridge;Location="";Mode=Read;Trace="""""""""""""""""""""""""""""";
Initial Catalog=riverford_rhdx_20060822
Can any on help me convert this to corrrect syntax for sql stored procedure
sp_addlinkedserver
I've tried this below but it does not work I just get an error saying it can not create an instance of OleMySql.MySqlSource.
I used SQL server management studio to create the linked server then just scripted this out below.
I seem to be missing the user ID, but don't know where to put it in.
EXEC master.dbo.sp_addlinkedserver @server = N'DATABRIDGE_OLEDB', @srvproduct=N'mysql', @provider=N'OleMySql.MySqlSource', @datasrc=N'databridge', @catalog=N'riverford_rhdx_20060822'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'collation compatible', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'data access', @optvalue=N'true'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'dist', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'pub', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'rpc', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'rpc out', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'sub', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'connect timeout', @optvalue=N'0'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'collation name', @optvalue=null
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'lazy schema validation', @optvalue=N'false'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'query timeout', @optvalue=N'0'
GO
EXEC master.dbo.sp_serveroption @server=N'DATABRIDGE_OLEDB', @optname=N'use remote collation', @optvalue=N'false'
Many Thanks
David Hills
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PHP Code:
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puuuuuuuuuuuuuuuleeeeeeeeeeze
Sorry....
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Feb 19, 2007
Can anybody see what is wrong with this?
create table transaction
(txn_id int not null IDENTITY(1,1),
txn_date datetime not null,
account_id int not null,
/*txn_type_cd enum('DBT','CDT')*/check(txn_type_cd('DBT','CDT')),
amount double(10,2) not null,
teller_emp_id smallint ,
execution_branch_id smallint ,
funds_avail_date datetime,
constraint fk_t_account_id foreign key (account_id)
references account (account_id),
constraint fk_teller_emp_id foreign key (teller_emp_id)
references employee (emp_id),
constraint fk_exec_branch_id foreign key (execution_branch_id)
references branch (branch_id),
constraint pk_transaction primary key (txn_id)
I'm getting an error when I try and run in, but I can't see what it is!
Incorrect syntax near the keyword 'transaction'.
The code has been generated as mysql, and I am attempting to change it to SQL.
Thank you!
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hi..
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is it very troublesome ??
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thanks
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take care...
Regards
Nabeel Qaisar
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Nov 30, 2005
Hello
I am in the process of convering my code from using MySQL to MS SQL
I have queries of the form:
Code:
INSERT INTO <table> (params) VALUES (values)
ON DUPLICATE KEY UPDATE <param1>=<value1>, <param1>=<value1>... <param n>=<value n>
My question is:
Is there an equivalent syntax for such query in MS SQL?
I am looking for a syntax that does this in a single atomic query.
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Also, is there an equivalent syntax for LIMIT X,Y in MS SQL
for quries in the form:
Code:
SELECT <params>
FROM <tables>
WHERE <conditions>
LIMIT X, Y
any help would be appreciated
Thanks
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