hi
I want to increase a varchar(5000)
to varchar(8000) on a table that
has approximately million rows.....
What is the impact on the server
or any good recomendations of a action to accomplish this in the best and
fastest way.
thanks davep
Say you have an existing populated SQL 2005 database, with 700+ tables, and you want to just change the order of the columns inside every table. Short of manually building conversion scripts, anyone know an automated way to do this? I was thinking thru ways to do them all in one shot, and have tools like Erwin and DbGhost that could be used also. Basically moving some standard audit columns from the end of the tables to just after the PK columns.
Thanks, Bruce
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] ....
Hi....I execute select statement on three tables and i get the following table:
ID
Value
Name
1
10
color
2
20
color
3
30
color
4
40
color
I have a database (MSSQL). To demonstrate the problem let me show a fictive Tablestructure. I don't want to discuss about how to save the data differntly, because the structure is fix and I can't change it.To get this result I would do a sql query with a lot of joins like that:
SELECT firstname, lastname, email.value, phone.value
FROM Customer
INNER JOIN
(
SELECT Customer_Properties.id, Customer_Properties.value
FROM Customer_Properties
[code]...
I don't think that this is really performant and the SQL-Queries get very complicated. Give it a other methode for that? I can't change the data structure.
Can we change table structure in Mirroring. Like adding or deleting columns and tables and how can we do it. Thank you very much.
View 3 Replies View RelatedI have a simple query which is taking about 2.5 minutes to execute. What can be done to speed it up ? I cannot change the table structure. even without the group by, and without the float and division, it takes about 2.25 minutes.
Select 'SV00302' as FileSource,
[Service_Call_ID],
sum(0) as ActualHours,
sum(cast([Estimate_Hours] as float)/100) as EstHours,
max(MODIFDT+Modified_Time) as ModifiedDateTime
[code]...
Hello,I have created the following trigger:CREATE TRIGGER tr_UDFTest ON UserDefinedFields FOR INSERT, UPDATEASDECLARE @foobar varchar(100)SELECT @foobar= foobar FROM insertedIF ( @foobar = 'foobar') INSERT INTO LogTable (LogText) values ('Found foobar')ELSE INSERT INTO LogTable (LogText) values ('Did not find foobar')GOBasically, the trigger monitors the values begin put in the foobar field,and acts accordingly based on what it finds. In practice, my needs are abit more complex (the trigger will be programmatically generated, based ona set of rules) but the principle is much the same.ErrorTable is defined as :create table LogTable (LogText varchar(128))UserDefinedFields is a table whose definition may change depending on theuser's needs, but for now assume it contains a varchar column calledfoobar.My problem is that if the user's needs change, and they remove the fieldfoobar, the trigger causes all subsequent inserts/updates to fail with anerror indicating the column foobar doesn't exist. (Which makes sense ofcourse!)CREATE TRIGGER tr_UDFTest ON UserDefinedFields FOR INSERT, UPDATEASDECLARE @foobar varchar(100)if not exists (select * from syscolumns sc inner join sysobjects so on sc.id = so.idwhere sc.name = 'foobar'and so.name = 'UserDefinedFields') BEGININSERT INTO LogTable (LogText) values ('Error : Foobar column does not exist!')RETURNENDSELECT @foobar= foobar FROM insertedIF ( @foobar = 'foobar') INSERT INTO LogTable (LogText) values ('Found foobar')ELSE INSERT INTO LogTable (LogText) values ('Did not find foobar')GOI'd be happy with the above 'flavor' of solution (bailing, or logging anerror and bailing, when we hit unexpected problems) as long as theinserts/updates don't fail otherwise. Perhaps I can nest a transaction, orsupress a RAISEERROR or something?The cleanest solution would probably be to change a bunch of clientsoftware such that it won't remove the foobar field if this field isneeded for a trigger (foreign key constraints based on the set of rulesI'm using are a nice and intuitive solution). Unfortunately, that doesn'twork well with my timeframe (done by thursday) as changing the clientsoftware is impossible by then. Any ideas or suggestions? Platform isWin2k, SQL 2000 Enterprise (I think enterprise, certainly 2000).thanks,Dave
View 6 Replies View RelatedI have set up mirroring in high availability mode (principal, mirror, and witness).
After setting up mirroring, I needed to adjust the size of a column in one of my tables. I did so with the following command
ALTER TABLE OrderOptimizer.dbo.rCodes ALTER COLUMN CodeDescription VARCHAR(8000).
The column was initially VARCHAR(128)
When I look at the table structure it shows that the column is now VARCHAR(8000), however I can only enter 128 characters into the field.
I forced a failover to look at the table on the mirrored version. It too showed that the column was VARCHAR(8000).
If I open the table I can enter more than 128 characters into the field, however when I refresh, it is truncated to 128 characters,
Any help would be appreciated
Change structure of a User Defined Table Types
field
([idConteudo] [int]
NULL) to
([idConteudo] [BigInt]
NULL)
Or really should drop and create again?
CREATE TYPE [dbo].[tbProjeto] AS TABLE(
[dsConteudo] [varchar](64) NOT NULL,
[idConteudo] [int] NULL,
[dtConteudo] [datetime] NULL DEFAULT (getdate())
)
GO
What is the fastest way to get a table structor into a SQLCEResultSet?
Currently this is what i am doing
SqlCeCommand command = connection.CreateCommand();
command.CommandText = "SELECT col1, col2 col3 from table1 where col1 = -1";
command.ExecuteResultSet(ResultSetOptions.Scrollable);
This will return 0 rows but I am hoping that there is a faster way to do this.
Thanks
Hello all, I was wondering. I am having trouble in my old age remembering to update my schema table when I make changes to the database. Is there a DB trigger or something that I could write to update this table for me when I edit or update a table structure, view, Trigger, or stored procedure?
Thank you in advance,
Jim
I have created two table with same data structure. I need realtime effects (i.e. data) on both tables - Table1 & Table2.
Following Points to Consider.
1. Both tables are in the same database.
2. Table1 is using for data entry & I wants the same data in the Table2.
3. If any row insert, update & delete occers on Table1, the same effect should be done on Table2.
4. I need real time data insert, update & delete on Table2.
I knew that using triggers it could be possible, I have successfully created a trigger for inserting new rows (using logical table "Inserted") in Table2 but not succeed for update & delete yet.
I want to understand how can I impletement this successfully without any ambiguity.
I have attached data structure for tables. Thanx...
How to get the result set:
AwardNumber AwardDt AwardType_RSS AwardQty_RSS
A1 01/01/2004 RSS 100
QUERY:
create table structure(
AWARDNUMBER VARCHAR(10),
AWARDDT DATEtime,
AWARDTYPE CHAR(3),
QTYAWARDED DECIMAL(20,6)
)
insert into structure
select 'A1','1/1/2004',null,null
union all
select null,null,'RSS',100
current output:
AWARDNUMBERAWARDDT AWARDTYPEQTYAWARDED
NULL NULL RSS 100.000000
A1 2004-01-01 00:00:00.000 NULL NULL
How to change column size dynamically depends on content of the column.
View 2 Replies View RelatedHello,
Here's my need :
In one directory there's several excels file. Theses file have the same structure :
col : LOOKID, LOOKNAME, ASMPID, ASMPNAME, LOOKTYPE, LTYP_NAME, PAR_TYPE, PTYP_NAME, PARAMETER, VALUE.
The problem is that the cell format of the PARAMETER col. is different bewteen excel files. It could be date, numeric, ... The col destination in sqlservr database is Varchar(10).
I've created the ssis package with a ForEach Loop, and in the ForEach loop I've created a Data Flow Task.
In the data Flow Task I've created an excell source file (using excel file with col PARAMETER in date format) with an OLE DB destination.
When I launch the package on the same excel file as the one using to create Excel Source object it's OK, no errors, and data in the sql table are OK.
But when I launch the package on Excel file with col. PARAMETER in numeric format, there's no execution errors, but in the destination table the value of the PARAMETER col. is transform in date format.
I tried to change in Excel source object the datatype of the input PARAMETER col, but I've got some compilations errors. It seems that SSIS recognize automaticaly excel source data type col. But may be I did something wrong in the excel source settings ?
Is there a way to force the excel source datatype with varchar(10) ?
I've also tried to do the treatment with an script task but my vb.net knowledge isn't enought to do that.
If you have some suggestions, I'm listening.
Thanks
Luffy
Hi, all experts here,
I am a bit confused for the model evaluation (lift chart), should we map all the columns for both the mining structure and the case table? I mean for those predictive models, we have a predict column, shouldnt we ignore the mapping of the predictive column between the mining structure and the case table? But it seemes we are not allowed to miss the predictive column mapping between the mining structure and the case table.
Why is that? Could any experts here give me some explanation on that?
Hope my question is clear for your help.
Thanks a lot and I am looking forward to hearing from you shortly.
With best regards,
Yours sincerely,
Hi,
I have two tables (test, test_invoice) both filled in automatically; what i need to do is update whenever there has been a change in table test_invoice (literally new record with date of invoice).
two tables:
create table test
(id_customer int not null
,date1 smalldatetime
,date2 smalldatetime
,flag char(3)
)
ALTER TABLE [dbo].[test] ADD
CONSTRAINT [PK_test] PRIMARY KEY CLUSTERED
(
[id_customer]
) ON [PRIMARY]
GO
insert into test (id_customer, date1, date2, flag) values (2323, '2008-2-23', '', 'Yes')
insert into test (id_customer, date1, date2, flag) values (2325, '2008-2-25', '', 'No')
create table test_invoice
(id_customer int not null
,date_invoice smalldatetime
)
ALTER TABLE [dbo].[test_invoice] ADD
CONSTRAINT [PK_test_invoice] PRIMARY KEY CLUSTERED
(
[id_customer]
) ON [PRIMARY]
GO
insert into test_invoice (id_customer, date_invoice) values (2325, '2008-3-2')
insert into test_invoice (id_customer, date_invoice) values (2329, '2008-3-5')
so how do i make this update happening automatically whenever there is a new record in test_invoice
update t
set t.date2 = ti.date_invoice
from
test as t
inner join test_invoice as ti
on ti.id_customer = t.id_customer
I'd say IF is missing in front of the update sentance...? :-)
Thank you
Hi, I want to change an int column (not null) to identity column. I tried
the following:
alter table myTable alter column ID int identity(10, 1) not null
But it failed with the error message:
Incorrect syntax near the keyword 'identity'.
Can someone please show me the correct statement (if it exists)>
Many thanks.
Hi All,
I have following issue.
Currently, whether values from parameters (there are 20 parameters) passed to one stored procedure will have following script to handle
INSERT INTO log table for all value from TABLEA where ID=@ID
UPDATE TABLEA SET COLUMNA=@COLUMNA and etc,STATUSDATE=getdate() WHERE ID=@ID
However, this creates the problem when the user submit same records, 40 times a day. As a result, statusdate is being updated frequently. This has created the problem in our daily report.
Thus, the user requested to have checking on each column. If any of column has different value, then the update can be done.
what i am thinking at this moment is
BEGIN TRAN
INSERT INTO log table for all value from TABLEA where ID=@ID
INSERT INTO TEMP TABLE (CHANGE_IN_COLUMNA)
UPDATE TABLEA SET COLUMNA=@COLUMNA OUTPUT CASE WHEN DELETED.COLUMNA <> INSERTED.COLUMNA THEN 'YES' ELSE 'NO END and etc,STATUSDATE=getdate() WHERE ID=@ID
IF ANY COLUMN HAS YES VALUE THEN COMMIT TRAN
OTHERWISE ROLLBACK TRAN
Do you think that this is a good solution?
Thanks for the assistance
This is on the uniqueidentifier column. Both tables are on the same database and have the same COLLATE Latin1_General_CI_AS.
But my plain update and insert results are all upper case.
Then when I tried to force by using
Insert (cols1, cols2) Values (source.col1, source.col2) COLLATE Latin1_General_CI_AS
and
Update set target.col1=source.col1, target.col2=source.col2 target.col1=source.col1 COLLATE Latin1_General_CI_AS
I got
Msg 447, Level 16, State 0, Line 32
Expression type uniqueidentifier is invalid for COLLATE clause.
hi,
I have a table which contained 5 columns and with 2 primary keys
Col 1 | Col 2 | Col 3 | Col 4 | Col 5 |
ab | 1 | abc | null | null
ab | 2 | def | null | null
Col 1 and Col 2 both are primary keys.
How do I update Col2 from 1 to 2 and from 2 to 1 in a single transaction statement and commit it?
Thanks
Hi,I'm using DB2 UDB 7.2.Also I'm doing some tests on SQL Server 2000 for some statements touse efectively.I didn't find any solution on Sql Server about WITH ... SELECTstructure of DB2.Is there any basic structure on Sql Server like WITH ... SELECTstructure?A Sample statement for WITH ... SELECT on DB2 like belowWITHtotals (code, amount)AS (SELECT code, SUM(amount) FROM trans1 GROUP BY codeUNION ALLSELECT code, SUM(amount) FROM trans2 GROUP BY code)SELECTcode, SUM(amount)FROM totalsGROUP BY code.............................Note: 'creating temp table and using it' maybe a solution.However i need to know the definition of the result set of Unionclause. I don't want to use this way.CREATE TABLE #totals (codechar(10), amount dec(15))GOINSERT INTO #totalsSELECT code, SUM(amount) FROM trans1 GROUP BY codeUNION ALLSELECT code, SUM(amount) FROM trans2 GROUP BY codeGOSELECT code, sum(amount) FROM #totals GROUP BY codeGOAny help would be appreciatedThanks in advanceMemduh
View 3 Replies View RelatedHello,
I have a SQL update statement that updates some user names, however, the user names exceed the length of the data type. Currently, for the column username the data type is set to nvarchar (8).
How can I change that to nvarchar(10) in a SQL Update statement?
Thanks in advance.
I used "OLE DB Command"(row by row) for update but because i found that very very slow i decided to try batch update. I check what is for insert and what is for update and those things that are for update i save to temp table. Then i run this:
update [ODS].[dbo].[Adres]
SET
[MutatieDatumEinde] = stAdres.MutatieDatumEinde,
[StraatNaam] = stAdres.StraatNaam,
[HuisNummer] = stAdres.HuisNummer,
[HuisNummerToevoeging] = stAdres.HuisNummerToevoeging,
[Postkode] = stAdres.Postkode,
[Plaats] = stAdres.Plaats,
[Land] = stAdres.Land,
[IndicatiePTTAdresStandaard] = stAdres.IndicatiePTTAdresStandaard,
[KodeHerkomstAdres] = stAdres.KodeHerkomstAdres,
[VervalDatum] = stAdres.VervalDatum,
[BronODS] = stAdres.BronODS
from
[ODS].[dbo].[Adres] oAdres
inner join [M2O_Stage].[dbo].[ODS_Adres] stAdres
on oAdres.InstNr = stAdres.InstNr and
oAdres.TypeAdres = stAdres.TypeAdres and
oAdres.MutatieDatumAanvang = stAdres.MutatieDatumAanvang
where stAdres.IsInsert = '0'
I run this as an "execute sql task". Everything is running as it should and speed is incomparable, but.. i have problem to make this generic... what i mean is.. db names will change.
How can i make db names dynamic here ?
p.s. i just got idea .. i could probably make dynamic sql statement in script component and then run it there... but does anyone have a better idea ?
How to right choose key column in"Mining Structure" for Microsoft Analysis Services?
I have table:
"Incoming goods"
Create table Income (
ID int not null identity(1, 1)
[Date] datetime not null,
GoodID int not null,
PriceDeliver decimal(18, 2) not null,
PriceSalse decimal(18, 2) not null,
CONSTRAINT PK_ Income PRIMARY KEY CLUSTERED (ID),
CONSTRAINT FK_IncomeGood foreign key (GoodID) references dbo.Goods ( ID )
)
I'm trying to build a relationship(regression) between “Price Sale” from Good and “Price Deliver”.But I do not know what column better choose as “key column”: ID or GoodID ?
Can I make a copy of my development database DEV on same SQL SERVER machine, rename it to TEST and stored procedures to be updated automatically for statements likeUPDATE [DEV].[dbo].[Company]SET [company_name] = @company_nameto becomeUPDATE [TEST].[dbo].[Company]SET [company_name] = @company_namein order not to edit each individual stored procedure for updating it ?
View 2 Replies View RelatedHow can i enable my fulltex change-tracking and update-index in my table?
I recreated my fulltext catalog and start the full population, but although my fulltext index status shows active, my full-text change-tracking and the update index were disabled. - and I don't know how to enable them.
Thanks in advance
I have created a table and found that i miss named a column. All i want to do is change the column name. But I don't see anything in ALTER TABLE to do that.
How do I simply change a column name?
Hi, guru,
How can I Change all rows into columns from one table? what method can make it easy?
Thank you very much
Tony
Can you alter a column and make it longer without dropping the column
View 3 Replies View RelatedHow can I change the value in a identity column? I cannot use update to change its value.
Thank you
I have two tables namely lu_parameter and tbl_param_values. The lu_parameter table consists of param_id and parameter column containing id numbers for the parameter names.
The tbl_param_values table consists of values corresponding to the parameters with the param_id value as the column header.
I want to join these two tables so that in the result query instead of param_id value as column heading, I need to have the parameter value as the column heading.
I have attached the screenshot of the data for reference. I am not that much aware of sql queries.
[URL] .....