Transact SQL :: Key And Indexes On Two Column Data Table Or Parsed View (Large String Of Data And Filename)
Oct 4, 2015
I am studying indexes and keys. I have a table that has a fixed width of data to be loaded in the first column which is parsed in a view based on data types within the fixed width specifications.
Example column A:
(name phone house cost of house,zipcodecountystatecountry)
-a view will later split this large varchar string basedÂ
column b: is the source filename of the data load (varchar 256)
....
a. would there be a benefit of adding a clustered or nonclustered index (if so which/point in direction on why)
b. is there benefit of making one of these two columns a primary key (millions of records) or for adding a 3rd new column as a pk?
c. view: this parses the data in column a so it ends up looking more like "name phone house cost of house zipcode county state country" each having their own column.
-any pros/cons of adding indexes (if so which) to the view instead of the tables or both for once the data is parsed?
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May 29, 2015
I have a SQL text column from SP_who2 in table #SqlStatement:
like 1row shown  below :
 "update Panel  set PanelValue=7286 where PanelFirmwareID=4 and PanelSettingID=9004000"
I want to find what table and column  names are in the text ..
I tried like below .. Â
Select B.Statement from #sp_who2 A Â
LEFT JOIN #SqlStatement B ON A.spid = B.spidÂ
 where B.Statement IN (
SELECT T.name, C.name FROM sys.tables T
JOIN sys.columns CÂ
ON T.object_id=C.object_id
WHERE T.type='U'
)Â
Something like this : find the column names and tables name
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Oct 22, 2015
I have a simple table data i want want to show row data in to column data.
     Â
SELECT clblcode,mlblmsg
FROM warninglabels
My expected result will beÂ
0001Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0002Â 0003Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0004
-------Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ------- --------Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â --------
May Cause....       Important..... Take madi...........         Do Not Take.......
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Dec 10, 2014
I need to update a large table, about 55 million rows, without filling the transaction log, in the shortest time as possible. The goal is to alter the table and change the data type for Text column from VARCHAR(7900) to NVARCHAR(MAX).
Since I cannot do it with an ALTER TABLE statement (it would fill up the transaction log) I'm thinking to:
- rename column Text in Text_OLD
- add Text column of type NVARCHAR(MAX)
- copy values in batches from Text_OLD to Text
The table is defined like:
create table DATATEXT(
rID INTEGER NOT NULL,
sID INTEGER NOT NULL,
pID INTEGER NOT NULL,
cID INTEGER NOT NULL,
err TINYINT NOT NULL,
[Code] ....
I've thought about a stored procedure doing this but how to copy values in batch from Text_OLD to Text.
The code I would start with (doing just this part) is the following, but maybe there are more efficient ways to do it, or at least there's a better way to select @startSeq in the WHILE loop (avoiding to select a bunch of 100000 sequences and later selecting the max).
declare @startSeq timestamp
declare @lastSeq timestamp
select @lastSeq = MAX(sequence) from [DATATEXT] where [Text] is null
select @startSeq = MIN(Sequence) FROM [DATATEXT] where [Text]is null
BEGIN TRANSACTION T1
WHILE @startSeq < @lastSeq
[Code] ....
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Sep 29, 2015
I have two databases DB1 and DB2 DB1 has a source table named 'Source' I have created a login 'Test_user' in DB2 with Public access. I have also created a view named 'Test_view' in DB2 which references data from DB1.dbo.Source
How can I do the following: AS A Test_user
SELECT * FROM DB2.dbo.Test_view --Should work
SELECT * FROM DB1.dbo.Source --Should Not work
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Nov 2, 2015
I have a SQL VIEW with col1, col2, col3. I need to add a new column to the view col4 coming from a TABLE in SQL Server.
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Sep 25, 2015
I am having two table i.e( tbl_oldEmployee , tbl_NewEmployee ),which is having Column name Employee Name and City same in both table but inside column data is different in different table.but i want to view the Employee name and City from tbl_NewEmployee to tbl_oldEmployee which is having EmployeeId common with tbl_oldEmployee extra record also required (i.e tbl_NewEmployee having 6 record and tbl_oldEmployee having 10 record,so i need to display data from tbl_oldEmployee but first 6 record which id match with tbl_NewEmployee id should be replaced and extra data from tbl_oldEmployee also display).
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May 29, 2015
I have table with about 10000 rows,  there is a column named  Raw_XMLData is defined as varchar but data is xml format. Â
I try to insert into another table, if Raw_XMLData column has is valid xml data?
Is it possible to do in T sql?
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Nov 23, 2005
I am having a problem with indexes on specific tables. For some reasona query that runs against a view is not selecting the correct index ona table. I run the same query against the table directly and it looksfine. Can anyone give me some insight? Thanks.PRODUCTION1:CREATE TABLE MyTest1 (ID INT IDENTITY(1,1), COLUMN1 CHAR(10), COLUMN2CHAR(10))CREATE CLUSTERED INDEX IDX_MyTest1 ON MyTest1 ON (ID)CREATE NONCLUSTERED INDEX IDX_MyTest2 ON MyTest1 ON (COLUMN2, ID)ARCHIVE1:CREATE TABLE MyTest1 (ID INT IDENTITY(1,1), COLUMN1 CHAR(10), COLUMN2CHAR(10))CREATE CLUSTERED INDEX IDX_MyTest1 ON MyTest1 ON (ID)CREATE NONCLUSTERED INDEX IDX_MyTest2 ON MyTest1 ON (COLUMN2, ID)REPORTDB:CREATE VIEW MyTest1 ASSELECT ID, COLUMN1, COLUMN2 FROM PRODUCTION1..MyTest1UNION ALLSELECT ID, COLUMN1, COLUMN2 FROM ARCHIVE1..MyTest1While in PRODUCTION1:SELECT ID, COLUMN2 FROM MyTest1 WHERE COLUMN2 = 'Testing'--> Clustered index seek PRODUCTION1..IDX_MyTest2--> Results returnedWhile in ARCHIVE1:SELECT ID, COLUMN2 FROM MyTest1 WHERE COLUMN2 = 'Testing'--> Clustered index seek ARCHIVE1..IDX_MyTest2--> Results returnedWhile in REPORTDB:SELECT ID, COLUMN2 FROM MyTest1 WHERE COLUMN2 = 'Testing'--> Index seek PRODUCTION1..IDX_MyTest2--> Bookmark lookup PRODUCTION1..IDX_MyTest1--> Index seek ARCHIVE1..IDX_MyTest2--> Bookmark lookup ARCHIVE1..IDX_MyTest1--> Concatenate data and results returned
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Feb 11, 2004
I have a web site that allows user to enter large strings into a database (comments, etc). What is the best way to do that? Right now I have them limited to 25 characters and the data type is varchar. Is there a better way?
Thanks!
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Apr 24, 2013
IF NOT EXISTS (SELECT TOP 1 1 FROM dbo.syscolumns WHERE id = OBJECT_ID(N'dbo.Employee) and name = 'DoNotCall')
BEGIN
ALTER TABLE [dbo].[Employee] ADD [DoNotCall] bit not null Constraint DoNot_Call_Default DEFAULT 0
IF ( @@ERROR <> 0 )
GOTO QuitWithRollback
END
It just takes a LOT of time in SQL Server Management studio. I have to cancel the query and cancelling takes a whole lot time. I am using SQL Server 2008.
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Aug 31, 2015
If I'm doing data compression(page level) does it rebuild indexes too? and how about stats, does it update stats too?
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Jul 16, 2015
I have run the select query which returned one row. There is one column in it which has got large amount of data. I want to copy the complete content of that column(varchar(max)), but I am unable to do it. It's not the xml data. I don't want to do any conversions.
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Mar 14, 2006
When executing the Script Task, I get the error shown here:
http://www.webfound.net/buffer.jpg
I'm not sure how to resolve this.
http://msdn2.microsoft.com/en-us/library/microsoft.sqlserver.dts.pipeline.buffercolumn(SQL.90).aspx
http://msdn2.microsoft.com/en-us/library/microsoft.sqlserver.dts.pipeline.buffercolumn.maxlength(SQL.90).aspx
how do I change the maxlength of the buffer...if, that is the problem here?
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Feb 6, 2007
I am getting the following error on my SSIS package. It runs a large amount of script components, and processes hundred of thousands of rows.
The exact error is: The value is too large to fit in the column data area of the buffer.
I redirect the error rows to another table. When I run just those records individually they import without error, but when run with the group of 270,000 other records it fails with that error. Can anyone point me to the cause of this issue, how to resolve, etc.
Thanks.
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Jan 29, 2008
I have a variable nvarchar(1000) that I ma reading into the buffer of a data flow task in the script component script task. It gives me this error:
"Script component exception.........The value is too large to fit in the column data area of the buffer."
I looked at the BufferColumn members and tried to set the maxlength to 1500. But it does not help.
What is the solution?
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Jan 28, 2006
Can someone tell me how to access the MaxLength property of a data column so I can figure out where the problem is?
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
Try
Row.PrimaryDiagnosis = Mid(Row.DiagnosisCode, 1, 8)
Catch ex As Exception
Row.Comments = "Error copying DiagnosisCode: <" + Row.DiagnosisCode + ">. " + ex.Message
End Try
Output = <aaaaa >
Thanks,
Laurence
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Sep 15, 2015
Is it possible to pull the index(s) for capital words in a string. Â For example, if I have a string that says, GetTableName, would it be possible to output, 0, 3, and 8?
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Jul 20, 2005
Hello there,I have and small excel file, which when I try to import into SQlServer will give an error "Data for source column 4 is too large forthe specified buffer size"I have four columns in the excel file, one of the column contains alarge chunk of data so I created a table in SQL Server and changed thetype of the field to text so I could accomodate this field but stillno luck.Any suggestions as to how to go about this.Thanks in advance,Srikanth pai
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Jul 31, 2015
I want to view all data that have a date of today, but my query is not returning them? Â Is it due to the actual data being a datetime and I am not accounting for time? Â How should I set this query up so that the data returns?
Create Table DateTest(ID int,Date1 datetime)
Insert Into DateTest Values(1, GetDate()), (2, GetDate()), (3, GetDate()), (4, GetDate())
Select * from DateTest
ORDER BY Date1 DESC
Select * from DateTest
where Date1 = convert(varchar(10), GetDate(), 126)
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Apr 30, 2015
I have a subset of data whose source of truth resides in an Oracle Database. Can I define a SQL Server View to retrieve this subset of data and make it available on the SQL Server side for say Reporting and SSRS? I think I also saw where they tend to prefer User-Defined functions as opposed to a view.
If I define the view using an OPENQUERY, I have noticed that it seems to run FOREVER on the SQL Server side and returns pretty timely if I run in Oracle SQL Developer. Is there anything I can tweak to improve this timeliness or lack there of? And the whole reason I'd like to create a view of this Oracle data is so that I can take advantage of all the views and functions that we have created on the SQL Server side.
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Sep 1, 2015
I'm using SQL-Server 2008, Visual Studio 2013. I've got created Linked Object (Linked Measure) in Cube2 from Cube1. Everything was fine, but I edited Measure in Cube1, as I found documentation there is no ability to refresh Linked Objects so I deleted and recreated Linked Measure on Cube2. After It I can't process Cube2, receiving following errors:
MdxScript(Cube2) (10, 24) The dimension '[Dim]' was not found in the cube when the string, [Dim], was parsed.The END SCOPE statement does not match the opening SCOPE statement.
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Aug 24, 2007
Hi,
I have a problem to import xls file to sql table, using MS SQL 2000 server.
Actual main problem associated with it is xls file contain one colum having large amount of text which length is approximate 1500 characters.
I am trying to resolve it through like save xls to csv or text file then import but it also can not copy whole text of that column, like any column in xls having 995 characters then text or csv file contain 560 characater. So, it is also wrong.
thanks in advance, if any try to resolve
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Jun 17, 2004
I need to get rid of the first char of data in a field f1 (in sql server)
I tried to use:
update myTable
set f1= substring(f1,1,f1.Len -1)
and get error "The column prefix 'f1' does not match with a table name or alias name used in the query.
Could anyone help? Thanks.
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Jan 9, 2008
I have two tables, one a data table, the other a product table. I want to perform a join on the two tables with values distributed into columns based on the value in the month field.
data_table
product_code month value
350 1 10
350 2 20
350 3 30
product_table
product_code profit_center
350 4520
result_view
product_code profit_center mon1 mon2 mon3
350 4520 10 20 30
My current query gives the following result
result_view
product_code profit_center mon1 mon2 mon3
350 4520 10 0 0
350 4520 0 20 0
350 4520 0 0 30
Any direction toward a solution would be appreciated. Am using SS2005.
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Mar 5, 2008
Dear all,
I'm using SQL Server 2005 Standard Edetion.
I have the following stored procedure that is executed against two tables (RecrodedCalls) and (RecordedCallsTags)
The table RecordedCalls has more than 10000000 Records and RecordedCallsTags is about 7500000 Records
Now the lines marked in baby blue are dynamic (Dynamic where statement) that varies every time this stored procedure is executed, may it contains 7 columns in condetion statement or may it contains 10 columns, or 2 coulmns.....etc
Now I want to create non-clustered indexes on the columns used in the where statement, THE DTA suggests different indexing whenever the where statement changes.
So what is the right way to created indexes, to create one index on all the columns once, or to create separate indexes on each columns, sometimes the DTA suggests 5 columns together at one if I€™m using 5 conditions, I can€™t accumulate all the possible indexes hence the where statement always vary from situation to situation, below the SP:
CREATE TABLE #tempLookups (ID int identity(0,1),Code NVARCHAR(100),NameE NVARCHAR(500),NameA NVARCHAR(500))
CREATE TABLE #tempTable (ID int identity(0,1),TypesCount INT,CallsType NVARCHAR(50))
INSERT INTO #tempLookups SELECT Code, NameE, NameA FROM lookups WHERE [Type] = 'CALLTYPES' ORDER BY Ordering ASC
INSERT INTO #tempTable SELECT COUNT(DISTINCT(RecordedCalls.ID)) As TypesCount,RecordedCalls.CallType as CallsType
FROM RecordedCalls LEFT OUTER JOIN RecordedCallsTags ON RecordedCalls.ID = RecordedCallsTags.CallID
WHERE RecordedCalls.ID <= '9369907'
AND (RecordedCalls.CallDate BETWEEN cast ('01 Jan 1910 00:00:00:000' as datetime ) AND cast ( '01 Jan 2210 00:00:00:000' as datetime ))
AND (RecordedCalls.Duration BETWEEN 0 AND 1000000)
AND RecordedCalls.ChannelID NOT IN('62061','62062','62063','62064','64110','64111','64112','64113','64114','69860','69861','69862','69863','69866','69867','69868')
AND RecordedCalls.ServerID NOT IN('2')
AND RecordedCalls.AgentID NOT IN('1000010000')
AND (RecordedCallsTags.TagID is null OR RecordedCallsTags.TagID NOT IN('100','200'))
AND RecordedCalls.IsDeleted='false'
GROUP BY RecordedCalls.CallType
SELECT IsNull(#tempTable.TypesCount, 0) AS TypesCount, CASE('English')
WHEN 'Arabic' THEN #tempLookups.NameA
ELSE #tempLookups.NameE
END AS CallsType FROM
#tempTable RIGHT OUTER JOIN #tempLookups ON #tempTable.CallsType = #tempLookups.Code
DROP TABLE #tempLookups
DROP TABLE #tempTable
Thanks all,
Tayseer
Any suggestions how to create efficient indexes??!!
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Jul 26, 2015
Error: The variable "$Package::LocalConfigDB_ConnectionString" was not found in the Variables collection. The variable might not exist in the correct scope.
Error: Attempt to parse the expression "@[$Package::LocalConfigDB_ConnectionString]" failed and returned error code 0xC00470A6. The expression cannot be parsed. It might contain invalid elements or it might not be well-formed. There may also be an out-of-memory error.
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Oct 4, 2005
Hi,
I’m attempting to use DTS to import data from a Memo field in MS Access (Jet 4.0 OLE DB Provider) into a SQL Server nvarchar(4000) field. Unfortunately, I’m getting the following error message:
Error at Source for Row number 30. Errors encountered so far in this task: 1.
Data for source column 2 (‘Html’) is too large for the specified buffer size.
I also get this error message when attempting to import the same data from Excel.
Per the MS Knowledgebase article located at http://support.microsoft.com/?kbid=281517, I changed the registry property indicated to 0. This modification did not help.
Per suggestions in other SQL Server forums, I moved the offending row from row number 30 to row number 1. This change only resulted in the same error message, but with the row number indicated as “Row number 1�. (Incidentally, the data in this field is greater than 255 characters in every row, so the cause described in the Knowledgebase article doesn’t seem to be my problem).
You might also like to know that the data in the Access table was exported into this table from a SQL Server nvarchar(4000) field.
Does anybody know what might trigger this error message other than the data being less than 255 characters in the first eight rows (as described in the KB article)?
I’ve hit a brick wall, so I’d appreciate any insight.Thanks in advance!
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Jan 17, 2008
In my quest to get the Script Component as Source to work, I've come upon an error that says "The value is too large to fit in the column data area of the buffer.". Of course, I went through the futile attempt to get debugging to work. After struggling and more searching, I found that I need to run Dts.Events.FireProgress to debug in a Script Component. However, despite the fact that the script says:
Code Block
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime.Wrapper
Imports Microsoft.SqlServer.Dts.Runtime
...
Dts.Events.FireProgress..
I get a new error saying: Error 30451: Name 'Dts' is not declared. Its like I am using the wrong namespace, but all documentation indicates that Microsoft.SqlServer.Dts.Pipeline.Wrapper is the correct namespace. I understand that I can use System.Windows.Form.MessageBox.Show, but iterating through 100 items makes this too cumbersome. Any idea what I may be missing now?
Thanks,
John T
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Aug 23, 2015
I am running an INSERT form one tables into another. I am getting below error;
Msg 8152, Level 16, State 10, Line 10
String or binary data would be truncated.
As I have a whole bunch of columns how do I figure which column is involved in error?
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Oct 31, 1999
Hello:
The purchased-application mssql 6.5, sp 4 that I am working on has one large table has 13m illion. It the largest table considering thenextlatgest table is only1.75 million rows.
Thew vnedor has made a change to this largest table in recommending changing a data type -- char to varchar. To make this change easier to do,
I want to "archive" older data not necessary for the current year or current processing to another table.
What is the best way to do this archiving?
Any information you can provide will be greatly appreciated. Thanks.
David Spaisman
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Sep 17, 2001
Is there a way of changing the value of a column in a view? For example, I have a table with defect code and a description (other columns as well). In a view, I would like to see only the defect code and the description, but if the code is > 90, I would like to define what the description is.
TIA
Jennifer
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May 18, 2001
I need to delete data from a particular table which has more than half a million records. The data needs to be deleted is more than 200,000 records from the table. What is the best way to delete the data from the table other than importing into a temporary table and performing the same operation?
Let me know if the strategy to be followed is okay.
1. Drop all the triggers
2. Drop all the indexes
3. Write a procedure with a loop setting ROWCOUNT to 1000 and delete the records. ( since if I try to delete all the rows it will give timeout error )
The above procedure will delete 1000 records for each batch inside the loop till it wipes out all the data for the specified condition.
4. Recreate Indexes and Triggers.
Please let me know if there are any other optimal solution.
Thanx,
Zombie
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