All,
I am trying out a new linked server - I can run this command fine:
SELECT * FROM NextGen4.NGEPMWareHouse.dbo.Network_People
If I try to get fancy (update a table on my local server from the linked server)
UPDATE dbo.Network_People
SET dbo.Network_People.NGTimeStamp = NextGen4.NGEPMWareHouse.dbo.Network_People.[TimeStamp]
WHERE dbo.Network_People.HIN = NextGen4.NGEPMWareHouse.dbo.Network_People.HIN
I get
The number name 'NextGen4.NGEPMWareHouse.dbo.Network_People' contains more than the maximum number of prefixes. The maximum is 3.
Try woking with UPDATE … FROM and an alias.
UPDATE
dbo.Network_People
SET
NGTimeStamp = warehouse.[TimeStamp]
FROM
NextGen4.NGEPMWareHouse.dbo.Network_People AS warehouse
INNER JOIN dbo.Network_People AS people ON people.HIN = warehouse.HIN
Try to exclude ".dbo" prefix from your tablenames and use "update from"
Related
I work with large databases that needs to be stored into a server.
So, to work with them on Rstudio I have to open a connection to my Microsoft SQL Server with the dbConnect function :
conn <- dbConnect(odbc(),"myconnection",uid="***",pwd="***",schema="dbo",access="readonly")
and in order to use dplyr, I have to create data references with the tbl function :
data <- tbl(conn, "data")
But one of the online dataframe contains a columns that I can't read because I dont have the access, but I can read everything else.
The SQL query behind the tbl() function is :
SELECT * FROM data
and this is my problem.
Even when I try to select a specific column it doesn't work (see below), so I can't create my references and I can't work.
select(tbl(conn, "data"), "columnX")
=
SELECT columnX FROM data
I think this is the tbl() function and the call of "SELECT *" that blocks me.
Do you know what can I do ? Is there smilar functions that could resolve my problem ?
If you know the columns that you have access to, then one option is to bypass the default access SELECT * FROM ... with your own SQL query.
A remote table is defined by two components:
The database conneciton
The query to the database
When you connect with the default approach tbl(conn, 'data') then it defaults to a query SELECT * FROM data.
But here is another approach:
custom_query = 'SELECT columnX FROM data'
remote_table = tbl(conn, dbplyr::sql(customer_query))
I'm using ADODB connections to connect to a database which none of my other colleagues understand how to connect to. So far I've got as far as being able to see all the available tables via 2 methods:
Dim ado as object
set ado = CreateObject("ADODB.Connection")
Call ado.open("...")
set rs = ado.Execute("SELECT * FROM sys.objects WHERE type='U'")
and also
const adTable = 20
Set rstSchema = ado.OpenSchema(adTable)
Do Until rstSchema.EOF
Debug.Print rstSchema("TABLE_NAME")
rstSchema.MoveNext
Loop
But the part which is confusing me is selecting from the tables directly... I expected to be able to do:
select * from <<TABLENAME>>
where <<TABLENAME>> was one of the table names returned by the above 2 methods. However whenever I do this I get the error in the title:
Invalid object name '<<TABLENAME>>'.
So how exactly am I meant to access the data in the tables identified from OpenSchema() method. Is there another method which I am unfamiliar with?
As discussed with itsLex in the comments:
In SQL Server terms:
select * from <<Database>>.<<Owner>>.<<TableName>>
Alternatively you can use the USE statement as follows:
USE <<Database>>;
select * from <<TableName>>;
How to find recently created index details in my SQL Server database? Any query to find this?
In my database there are a lot of indexes. I want to know which of those indexes were recently created, with all their details.
You can use SCHEMA changes history to know index creation changes along with many changes
Below is how you do it..
1.Right click server
2.Goto reports -->standard reports-->Schema changes history
below is screenshot from mt device
Default trace is enabled by default,unless you turn it on
below query tells you,if default trace status is ON
select * from sys.configurations where name like '%trace%'
below query can provide object creation stats
SELECT OBJECT_NAME(objectid),objectname,indexid
FROM sys.fn_trace_gettable(CONVERT(VARCHAR(150), ( SELECT TOP 1
f.[value]
FROM sys.fn_trace_getinfo(NULL) f
WHERE f.property = 2
)), DEFAULT) T
JOIN sys.trace_events TE ON T.EventClass = TE.trace_event_id
where DatabaseName=db_name()
ORDER BY t.StartTime ;
I'm attempting to write an update query that uses both a local server and a linked server (amazon web service sql server). I need to use a table alias in order to truncate my statements to 4 denominations or less, such as [Server].[Database].[TableAlias].[Column] instead of [Server].[Database].[Owner].[Table].[Column] so that the multi-part identifier can be bound.
This is the update query I am attempting to use table aliases with:
UPDATE [Amazon IP].[AmazonDatabase].dbo.InkVials
SET InkRequestID = Local_Database.dbo.TasksInkRequests.InkRequestID
FROM Local_Database.dbo.TasksInkRequests
WHERE [Amazon IP].[AmazonDatabase].dbo.InkVials.InkRequestID = Local_Database.dbo.TasksInkRequests.JobRequestID
AND [Amazon IP].[AmazonDatabase].dbo.InkVials.Processing = 1;
I've tried multiple ways but don't seem to be doing it right.
This is normally how you use Table aliases to do an update with a joined table:
UPDATE i
SET InkRequestID = r.InkRequestID
FROM [Amazon IP].[AmazonDatabase].dbo.InkVials i
INNER JOIN Local_Database.dbo.TasksInkRequests r
ON i.InkRequestID = r.JobRequestID
WHERE i.Processing = 1;
I have this sql:
UPDATE JOBMAKE SET WIP_STATUS='10sched1'
WHERE JBT_TYPE IN (SELECT JBT_TYPE FROM JOBVISIT WHERE JVST_ID = 21)
AND JOB_NUMBER IN (SELECT JOB_NUMBER FROM JOBVISIT WHERE JVST_ID = 21)
It works until I turn it into a parameterised query:
UPDATE JOBMAKE SET WIP_STATUS='10sched1'
WHERE JBT_TYPE IN (SELECT JBT_TYPE FROM JOBVISIT WHERE JVST_ID = #jvst_id)
AND JOB_NUMBER IN (SELECT JOB_NUMBER FROM JOBVISIT WHERE JVST_ID = #jvst_id)
Duplicated parameter names are not allowed. [ Parameter name = #jvst_id ]
I tried this (which i think would work in SQL SERVER 2005 - although I haven't tried it):
UPDATE JOBMAKE
SET WIP_STATUS='10sched1'
FROM JOBMAKE JM,JOBVISIT JV
WHERE JM.JOB_NUMBER = JV.JOB_NUMBER
AND JM.JBT_TYPE = JV.JBT_TYPE
AND JV.JVST_ID = 21
There was an error parsing the query. [ Token line number = 3,Token line offset = 1,Token in error = FROM ]
So, I can write dynamic sql instead of using parameters, or I can pass in 2 parameters with the same value, but does someone know how to do this a better way?
Colin
Your second attempt doesn't work because, based on the Books On-Line entry for UPDATE, SQL CE does't allow a FROM clause in an update statement.
I don't have SQL Compact Edition to test it on, but this might work:
UPDATE JOBMAKE
SET WIP_STATUS = '10sched1'
WHERE EXISTS (SELECT 1
FROM JOBVISIT AS JV
WHERE JV.JBT_TYPE = JOBMAKE.JBT_TYPE
AND JV.JOB_NUMBER = JOBMAKE.JOB_NUMBER
AND JV.JVST_ID = #jvst_id
)
It may be that you can alias JOBMAKE as JM to make the query slightly shorter.
EDIT
I'm not 100% sure of the limitations of SQL CE as they relate to the question raised in the comments (how to update a value in JOBMAKE using a value from JOBVISIT). Attempting to refer to the contents of the EXISTS clause in the outer query is unsupported in any SQL dialect I've come across, but there is another method you can try. This is untested but may work, since it looks like SQL CE supports correlated subqueries:
UPDATE JOBMAKE
SET WIP_STATUS = (SELECT JV.RES_CODE
FROM JOBVISIT AS JV
WHERE JV.JBT_TYPE = JOBMAKE.JBT_TYPE
AND JV.JOB_NUMBER = JOBMAKE.JOB_NUMBER
AND JV.JVST_ID = 20
)
There is a limitation, however. This query will fail if more than one row in JOBVISIT is retuned for each row in JOBMAKE.
If this doesn't work (or you cannot straightforwardly limit the inner query to a single row per outer row), it would be possible to carry out a row-by-row update using a cursor.