I have two similar database with the same schema.But one is for printing purpose.
My window form application needs to read data from dby on server1 to dby on server2.The servers are on different network but can communicate. Am trying to use subquery this is
query:
Using main_db
Insert into socio_bio
select * from socio_bio where receiptno in (
)
You can use this stored procedure: sp_addlinkedserver()
exec sp_addlinkedserver #server = 'yourServerName'
select * from [server].[database].[schema].[table]
and in your example
select * from [yourServerName].[testdb].[dbo].[table]
Related
Im trying to Establish a One Direction Sync from a specific query'd recordset from MSSQL (express 2008) to Mysql. Here is that query.
SELECT [datafk]
,[datahistorypk]
,[date]
,[displayText]
FROM [FCentral].[dbo].[DataHistory]
WHERE [sampleNr] =
(SELECT MAX (sampleNr) FROM [FCentral].[dbo].[DataHistory])
This results in a Multiple results. I need to insert each of those results into my "Linked Server" remotely connected MySQL DB Table.
This code works from SSMS and does insert into my MySQL DB.
EXEC (' INSERT INTO `farms`.`CCData` (
`datafk` ,`datahistorypk` ,`date` ,`displayText` )
VALUES ("222", "13", "2017-10-19 14:25:05", "TEST"); ')
at BPF_REMOTE
Ultimately i will need to schedule this query to run automatically, It would be nice if it could run if a change was detected in the MSSQL table but that may be outside of my abilities.
I feel like im close, im just struggling to get the syntax right to convert from MSSQL to MySQL. Can anyone either point to a good example or help me with this query?
Set up a linked server in SQL Server and just do a regular insert:
INSERT INTO BPF_REMOTE.farms.CCData(datafk, datahistorypk, date, displayText)
SELECT [datafk], [datahistorypk], [date], [displayText]
FROM [FCentral].[dbo].[DataHistory]
WHERE [sampleNr] = (SELECT MAX (sampleNr) FROM [FCentral].[dbo].[DataHistory]);
Is there any way to easily create a stored procedure on multiple MySQL databases at once? All the databases are on the same MySQL install.
Installing in all schemas
To get a list of the schemas, use show databases;. Combine this with -- use:
use schemaA;
-- use schemaB;
-- use schemaC;
create procedure ...
Manually iterate through the schemas, removing and uncommenting use clauses as you move on, checking that everything works out. In MySQL Workbench, Ctrl+Shift+Enter is your friend.
Installing routines in a subset of schemas
Normally you don't want to install the stored routine in all schemas on a server, but only in a subset --- often defined by the set of schemas which already have some specific stored routine installed. Then, as discussed on SO, you can use a query like this to get the names of the relevant schemas:
SELECT ROUTINE_SCHEMA FROM `information_schema`.`ROUTINES` where specific_name = 'MyRoutine';
Verification
After deploying routines, to verify the existence of them, you can use a query like this:
SELECT distinct
r1.ROUTINE_SCHEMA,
case when r2.specific_name is not null then '' else '####' end as RoutineName1,
case when r3.specific_name is not null then '' else '####' end as RoutineName2,
case when r4.specific_name is not null then '' else '####' end as RoutineName3
FROM
`information_schema`.`ROUTINES` as r1
LEFT JOIN (select * from `information_schema`.`ROUTINES` where specific_name = 'RoutineName1') as r2 on r1.routine_schema = r2.routine_schema
LEFT JOIN (select * from `information_schema`.`ROUTINES` where specific_name = 'RoutineName2') as r3 on r1.routine_schema = r3.routine_schema
LEFT JOIN (select * from `information_schema`.`ROUTINES` where specific_name = 'RoutineName3') as r4 on r1.routine_schema = r4.routine_schema
where
r1.specific_name = 'FilteringRoutineName';
This query will check whether RoutineName1, RoutineName2 and RoutineName3 exist in the database schemas on your server which have the routine FilteringRoutineName. If a routine is missing, it will be marked with ####.
Of course, this only checks for routine existence. To verify their implementation, you may need a database diff tool (such as MySQL Compare or similar).
Assuming you are using Linux, a simple BASH loop with an array of schema names will let you do this.
Save your procedure definition to a file (e.g. myproc.sql), then use the file as input to mysql in the loop. If you put your sign-in details in ~/.my.cnf you can also avoid having to put usernames and passwords on the cmdline.
for i in dbname1 dbname2 dbname3; do mysql ${i} < myproc.sql; done;
I would recommend doing a copy-paste and create the stored procedure in each database schema if they need to be available to that schema only. Otherwise I would follow the recommendation from 'Kelly Vista' and just refer to the stored procedure located in one of the schema's.
In SQL Server (i'm using 2008) is it possible to dynamically access server by server name?
My scenario: I have a production server, a development server, and a test server. Their structure is the same. There is a fourth server with some additional data - let's call it a data server.
On the data server there is a procedure. One of it's parameters is a name of the requesting server:
proc sp_myProcedure(#myId int, #serverName nvarchar(100))
The procedure accesses tables from the data server and from the requesting server. At the moment, to query the requesting server I'm using a case expression:
-- code on the data server
select additionalData = case #serverName
-- if the requesting server is production - query production
when 'ProdServer' then (select field1 from [ProdServer].[MyDataBase].[dbo].[MyTable] ...
-- if the requesting server is test - query test
when 'TestServer' then (select field1 from [TestServer].[MyDataBase].[dbo].[MyTable] ...
-- if the requesting server is development - query development
when 'DevServer' then (select field1 from [DevServer].[MyDataBase].[dbo].[MyTable] ...
end
My question is if there is any other way to access the requesting server. I'd like to replace ifs and cases with something more dynamic. Is it, for instance, possible to use the server name variable to dynamically access specific server. Something similar to the following (mocked) query:
declare myServer <server type> = Get_Server(#serverName)
-- the query
additionalData = select field1 from [myServer].[MyDataBase].[dbo].[MyTable]
I liked this approach
SELECT
SERVERPROPERTY('MachineName') AS [ServerName],
SERVERPROPERTY('ServerName') AS [ServerInstanceName],
SERVERPROPERTY('InstanceName') AS [Instance],
SERVERPROPERTY('Edition') AS [Edition],
SERVERPROPERTY('ProductVersion') AS [ProductVersion],
Left(##Version, Charindex('-', ##version) - 2) As VersionName
Link
Another approach which we were using was
Creating one database called database_yourprojectname
So, for the explanation I'm using database name as northwind
after that you can create one new database called northwind_db
Which has a following fields:
Servername,username(encrypted),password(encrypted),active
And then you can either make one page to insert/update/delete current database used there
or you can add statically data to it..so, you can use the database which is active currently.
Or use simple one:
SELECT ##SERVERNAME
Which is already stated here
I have multiple OLAP databases in my project, so is it possible to dynamically decide the catalog for executing this MDX query?
SELECT * FROM OpenQuery(OLAP_SERVER, 'WITH MEMBER measures.X AS dimensions.count SELECT Measures.X ON 0 FROM MyCube') as X
I don't want to create a separate linked server for each of the OLAP database.
Both the relational and cube databases reside on the same physical machine.
My linked server configuration are:
EXEC master.dbo.sp_addlinkedserver
#server = N'OLAP_SERVER'
, #srvproduct=N'OLAP_SERVER', #provider=N'MSOLAP'
, #datasrc=N'localhost'
--, #catalog=N'xxxx' default catalog commented out
GO
EXEC master.dbo.sp_addlinkedsrvlogin
#rmtsrvname = N'OLAP_SERVER'
, #locallogin = NULL
, #useself = N'FALSE'
, #rmtuser=N'xxxx'
, #rmtpassword='xxxx'
GO
Alternatively, is it possible to fully qualify the cube name with the OLAP database name like [OLAPDBName].[MyCube] in the MDX script?
Please help, thank you.
If you use OpenRowset instead of OpenQuery, you can specify the connection parameters dynamically as a string:
select *
from OpenRowset('MSOLAP',
'Data Source=localhost;Initial Catalog=xxxx;Provider=MSOLAP.4;Integrated Security=SSPI;Format=Tabular;',
'WITH MEMBER measures.X AS dimensions.count
SELECT Measures.X ON 0 FROM MyCube')
Is there any way to easily create a stored procedure on multiple MySQL databases at once? All the databases are on the same MySQL install.
Installing in all schemas
To get a list of the schemas, use show databases;. Combine this with -- use:
use schemaA;
-- use schemaB;
-- use schemaC;
create procedure ...
Manually iterate through the schemas, removing and uncommenting use clauses as you move on, checking that everything works out. In MySQL Workbench, Ctrl+Shift+Enter is your friend.
Installing routines in a subset of schemas
Normally you don't want to install the stored routine in all schemas on a server, but only in a subset --- often defined by the set of schemas which already have some specific stored routine installed. Then, as discussed on SO, you can use a query like this to get the names of the relevant schemas:
SELECT ROUTINE_SCHEMA FROM `information_schema`.`ROUTINES` where specific_name = 'MyRoutine';
Verification
After deploying routines, to verify the existence of them, you can use a query like this:
SELECT distinct
r1.ROUTINE_SCHEMA,
case when r2.specific_name is not null then '' else '####' end as RoutineName1,
case when r3.specific_name is not null then '' else '####' end as RoutineName2,
case when r4.specific_name is not null then '' else '####' end as RoutineName3
FROM
`information_schema`.`ROUTINES` as r1
LEFT JOIN (select * from `information_schema`.`ROUTINES` where specific_name = 'RoutineName1') as r2 on r1.routine_schema = r2.routine_schema
LEFT JOIN (select * from `information_schema`.`ROUTINES` where specific_name = 'RoutineName2') as r3 on r1.routine_schema = r3.routine_schema
LEFT JOIN (select * from `information_schema`.`ROUTINES` where specific_name = 'RoutineName3') as r4 on r1.routine_schema = r4.routine_schema
where
r1.specific_name = 'FilteringRoutineName';
This query will check whether RoutineName1, RoutineName2 and RoutineName3 exist in the database schemas on your server which have the routine FilteringRoutineName. If a routine is missing, it will be marked with ####.
Of course, this only checks for routine existence. To verify their implementation, you may need a database diff tool (such as MySQL Compare or similar).
Assuming you are using Linux, a simple BASH loop with an array of schema names will let you do this.
Save your procedure definition to a file (e.g. myproc.sql), then use the file as input to mysql in the loop. If you put your sign-in details in ~/.my.cnf you can also avoid having to put usernames and passwords on the cmdline.
for i in dbname1 dbname2 dbname3; do mysql ${i} < myproc.sql; done;
I would recommend doing a copy-paste and create the stored procedure in each database schema if they need to be available to that schema only. Otherwise I would follow the recommendation from 'Kelly Vista' and just refer to the stored procedure located in one of the schema's.