Hello, everyone
I need to create a trigger to update a FLAG column by row modification. The table likes,
Col1FLAG
a0
b0
c0
d0
e0
If "a" in Col1 is changed, the "0" in same row (First row) should be changed to '1'. Other FLAG values should not be changed. The same rule for other row.
Anyhelp will be approciated.
Thanks a lot
ZYT
Hey,
I'm new to this whole SQL Server 2005 thing as well as database design and I've read up on various ways I can integrate business constraints into my database. I'm not sure which way applies to me, but I could use a helping hand in the right direction.
A quick explanation of the various tables I'm dealing with:
WBS - the Work Breakdown Structure, for example: A - Widget 1, AA - Widget 1 Subsystem 1, and etc.
Impacts - the Risk or Opportunity impacts for the weights of a part/assembly. (See Assemblies have Impacts below)
Allocations - the review of the product in question, say Widget 1, in terms of various weight totals, including all parts. Example - September allocation, Initial Demo allocation, etc. Mostly used for weight history and trending
Parts - There are hundreds of Parts which will eventually lead to thousands. Each part has a WBS element. [Seems redundant, but parts are managed in-house, and WBS elements are cross-company and issued by the Government]
Parts have Allocations - For weight history and trending (see Allocations). Example, Nut 17 can have a September 1st allocation, a September 5th allocation, etc.
Assemblies - Parts are assemblies by themselves and can belong to multiple assemblies. Now, there can be multiple parts on a product, say, an unmanned ground vehicle (UGV), and so those parts can belong to a higher "assembly" [For example, there can be 3 Nut 17's (lower assembly) on Widget 1 Subsystem 2 (higher assembly) and 4 more on Widget 1 Subsystem 5, etc.]. What I'm concerned about is ensuring that the weight roll-ups are accurate for all of the assemblies.
Assemblies have Impacts - There is a risk and opportunity impact setup modeled into this design to allow for a risk or opportunity to be marked on a per-assembly level. That's all this table represents.
A part is allocated a weight and then assigned to an assembly. The Assemblies table holds this hierarchical information - the lower assembly and the higher one, both of which are Parts entries in the [Parts have Allocations] table.
Therefore, to ensure proper weight roll ups in the [Parts have Allocations] table on a per part-basis, I would like to check for any inserts, updates, deletes on both the [Parts have Allocations] table as well as the [Assemblies] table and then re-calculate the weight roll up for every assembly. Now, I'm not sure if this is a huge performance hog, but I do need to keep all the information as up-to-date and as accurate as possible. As such, I'm not sure which method is even correct, although it seems an AFTER DML trigger is in order (from what I've gathered thus far). Keep in mind, this trigger needs to go through and check every WBS or Part and then go through and check all of it's associated assemblies and then ensure the weights are correct by re-summing the weights listed.
If you need the design or create script (table layout), please let me know.
Thanks.
can i make a trigger to fire based on given date and time?
View 2 Replies View RelatedOne of my table called as 'customertable' contains following fields
customername, emailid, subscriptionendperiod
Example records are:
david, david@john.com, 12/20/2005(mm/dd/yyyy format).
My question is that: Just one month before subscriptionendperiod that is on 11/20/2005(mm/dd/yyyy) an automatic email should go to david@john.com with the message 'Your subscription period ends on 12/20/2005'
How to write trigger for this.
Please Note : No ASP code is invloved in this.
Only MSSQL coding to be done.
Regards
Do triggers work on the field level or only for full table updates, etc...?
I want to have a trigger that will change a field on another table based on the update of a specific field on a table.
Could anyone provide a sample please, if this is possible?
Thank you!
Hi
I am building a pretty simple intranet application where we need to be able to track changes to tables. The tracking feature do not need to be very advanced, we just need to see who changed something and what it was. Therefore I decided just to use a trigger based solution, but need some input/advice since my SQL skills is somewhat lacking.
Consider the following (mock-up) schema:
-- My content table
CREATE TABLE [Content](
[ContentGuid] [uniqueidentifier] NOT NULL PRIMARY KEY DEFAULT (newid()),
[Data] [nvarchar](4000) NOT NULL,
[ChangedBy] [nchar](10) NOT NULL,
[MaybeNull] [int] NULL
)
-- My history table
CREATE TABLE [History](
[ChangedTable] [nvarchar](50) NOT NULL,
[ReferenceGuid] [uniqueidentifier] NOT NULL,
[ChangedBy] [nchar](10) NOT NULL,
[ChangedOn] [datetime] NOT NULL DEFAULT (getutcdate()),
[IsDelete] [bit] NOT NULL DEFAULT ((0)),
[Changes] [xml] NOT NULL
) ON [PRIMARY]
-- My insert/update trigger
CREATE TRIGGER [RecordChangeOnInsertUpdate]
ON [Content]
AFTER INSERT,UPDATE
AS
BEGIN
SET NOCOUNT ON;
DECLARE @Changes xml
SET @Changes = (select * from [inserted] for xml raw ('Content'), elements xsinil)
INSERT INTO [History]
([ChangedTable]
,[ReferenceGuid]
,[ChangedBy]
,[ChangedOn]
,[IsDelete]
,[Changes])
SELECT 'Content', ContentGuid, ChangedBy, getutcdate(), 0, @Changes
FROM [inserted]
END
-- My delete trigger
CREATE TRIGGER [RecordChangeOnDelete]
ON [Content]
AFTER DELETE
AS
BEGIN
SET NOCOUNT ON;
DECLARE @Changes xml
SET @Changes = (select * from [deleted] for xml raw ('Content'), elements xsinil)
INSERT INTO [History]
([ChangedTable]
,[ReferenceGuid]
,[ChangedBy]
,[ChangedOn]
,[IsDelete]
,[Changes])
SELECT 'Content', ContentGuid, ChangedBy, getutcdate(), 1, @Changes
FROM [deleted]
END
I have decided to use the "one history table for all table changes" method. The changes for a row is stored in a xml column which obviously limits the total size of columns in a table being tracked, but that is not a problem in my application. In general I like this set up, since I will be able to change the schema continuously without having to change the triggers, and since the application will probably evolve a lot over the coming months this is pretty important to me.
EDIT: I should add that all the tables I will be tracking have a uniqueidentifier column. This makes it possible to related table rows in the different tables being tracked with their history.
A few concerns with the above SQL:
- Can the inserted/deleted table change between "SET @Changes = (select * ..." and the "INSERT INTO ..." statement, such that the data is not valid? If so, how to work around that?
- If I were to (hypothetically) perform a "UPDATE [Content] SET [Data] = 'something'", not only is my update trigger called once for each row updated, but the XML added to the inserted row in the history table ([History].[Changes]) represent all the rows updated in the batch update. How do I get around this?
Are there any other issues I should be aware of?
Regards, Egil.
I am new to triggers and surely could use some help.
I can create a trigger to insert related records based on the main tables ID and insert that value into other related tables fine... but...
How do I create a trigger that can insert a record into one table for a columns given value and then insert a record into another table for another given value?
For instance:
New row...
Table1, Column1 (PK) has a value of 101
Table1, Column2 has a value of 'Blue'.
// When a new row is created in Table1 and Column2 has a value of 'Blue'...
I want to insert a new row into Table2 - with Table1 Column1's value.
// Now if Table1, Column2 has a value of 'Red' when the new row was created...
I want to insert a new row into Table3 - with Table1 Column1's value. Not Table2
This has to be inserted into one or the other tables based on column2's value, not both.
Then I want to populate the other related tables (Table4, Table5) with the regular insert statements based on Table1 Column1's value.
This (the conditional part above) has to work with an update to Table1 also.
So if someone came back to that record and changed Column2's value from 'Blue' to 'Red', it would have to delete the appropriate record in Table2 and then insert the new row into Table3 and visa-versa.
Can I do this with one trigger?
Thanks
Hello,Would it be possible to open a socket connection and send few data based on an insert TRIGGER?My client would basically like to send the ID of a product via socket connection when a new product is inserted into the SQL database.Thanks for your helpArnold
View 13 Replies View RelatedI would like to change a value after the table updates inserts a new row based on the value of that column
Table Name is: MPanel
Col Names: RID, FPID.
I want to:
If column RID='16'
Then UPDATE FPID='1'
How can I trigger that update? Would this work:???
CREATE TRIGGER dbo.MyTrigLI
ON dbo.MPanel
FOR INSERT, UPDATE
AS
BEGIN
UPDATE [MPanel]
SET
FPID='1'
WHERE (UPDATE(RID='16')
END
Hello again,
I'm hoping someone can help with with a task I've been given. I need to write a trigger which will act effectively as a method of automatically distributing of incoming call ticket records. See DDL below for creation of the Assignment table, which holds information on the call ticket workload.
Code Snippet
CREATE TABLE #Assignment
(CallID INT IDENTITY(1500,1) PRIMARY KEY,
AssignmentGroup VARCHAR(25),
Assignee VARCHAR(25)
)
GO
INSERT #Assignment (AssignmentGroup, Assignee)
VALUES ('Service Desk', 'Jim Smith')
INSERT #Assignment (AssignmentGroup, Assignee)
VALUES ('PC Support', 'Donald Duck')
INSERT #Assignment (AssignmentGroup, Assignee)
VALUES ('Service Desk', 'Joe Bloggs')
INSERT #Assignment (AssignmentGroup, Assignee)
VALUES ('Service Desk', 'Joe Bloggs')
INSERT #Assignment (AssignmentGroup, Assignee)
VALUES ('Service Desk', 'Joe Bloggs')
INSERT #Assignment (AssignmentGroup, Assignee)
VALUES ('PC Support', 'Donald Duck')
INSERT #Assignment (AssignmentGroup, Assignee)
VALUES ('PC Support', 'Mickey Mouse')
GO
SELECT COUNT(CallID) AS [Total Calls], AssignmentGroup, Assignee
FROM #Assignment
GROUP BY AssignmentGroup, Assignee
ORDER BY COUNT(CallID) DESC , AssignmentGroup, Assignee
What I need to do is write a trigger for on INSERT to automatically update the Assignee column with the name of the person who currently has the least active calls. For example, using the data above, the next PC Support call will go to Mickey Mouse, and the next two Service Desk calls will go to Jim Smith.
So, the logic for the trigger would be
UPDATE #Assignment
SET Assignee = (SELECT Assignee FROM #Assignment WHERE COUNT(CallID) = MIN(COUNT(CallID))
But that's only the logic, and obviously it doesn't work with the syntax being nothing like correct.
Does any one have an idea or pointers as to how I should go about this?
Grateful for any advice, thanks
matt
I need to send an email when my 'LastRunDate' field is 30 days old (i.e. It should send an email if the LastRunField = 7/21/2007).
I would need to include the matching fields in the database (i.e. MachineID, Description, etc.) then update that field to todays date.
I have a few values in the 'Frequency' field such as Daily, Monthly, Yearly. Daily would be 24 hrs, monthly 30 days, yearly 365 days from the lastrundate.
I am new to T-SQL & need a good p[lace to start.
Any sugesstions.
Thanks.
Hi,
I have a 'Execute SQL Task' in my 'control flow', my 'Execute SQL Task' will return a value which I am assigning to a variable. Based on the value of the variable, I need to control my other flows. If the variable's value is 1 then I should invoke a dataflow, else I should write a failure error message in event viewer. Please could someone provide some inputs on how this can be done.
'Execute SQL Task' ----->value 1 ------>data flow to be executed
'Execute SQL Task' ----->value !=1 ------> write some error message in the event viewer and no tasks should be executed after that.
Thanks
raj
I created a view that joins several tables together and added an instead of insert, update trigger on it. My trigger works when I do an update/insert directly to the view, but it doesn't seem to fire when an insert/update is made to any of the tables that the view is based on. Is there a way to have the trigger fire when something happens to the tables that the view is based on? The application that the database is using is something that was purchased so I don't have access to the code to change any SQL statements that it's using.
View 5 Replies View RelatedI have an assignment to make a library. Right now I'm at the point of implementing business rules. One is that I need to create a trigger that won't allow a member to exceed a certain number of loans at a time, based on their category (student = 5, Teacher =10 and Researcher = 20).
View 1 Replies View RelatedI would like to transfer selected data from an ODBC-based table to a OLEDB-based table. However, there isn't a data flow source on the Data Flow Design screen to accomodate such an action. Please help!
View 1 Replies View RelatedAre there any limitations or gotchas to updating the same table whichfired a trigger from within the trigger?Some example code below. Hmmm.... This example seems to be workingfine so it must be something with my specific schema/code. We'reworking on running a SQL trace but if anybody has any input, fireaway.Thanks!create table x(Id int,Account varchar(25),Info int)GOinsert into x values ( 1, 'Smith', 15);insert into x values ( 2, 'SmithX', 25);/* Update trigger tu_x for table x */create trigger tu_xon xfor updateasbegindeclare @TriggerRowCount intset @TriggerRowCount = @@ROWCOUNTif ( @TriggerRowCount = 0 )returnif ( @TriggerRowCount > 1 )beginraiserror( 'tu_x: @@ROWCOUNT[%d] Trigger does not handle @@ROWCOUNT[color=blue]> 1 !', 17, 127, @TriggerRowCount) with seterror, nowait[/color]returnendupdate xsetAccount = left( i.Account, 24) + 'X',Info = i.Infofrom deleted, inserted iwhere x.Account = left( deleted.Account, 24) + 'X'endupdate x set Account = 'Blair', Info = 999 where Account = 'Smith'
View 1 Replies View RelatedThis Audit Trigger is Generic (i.e. non-"Table Specific") attach it to any tabel and it should work. Be sure and create the 'Audit' table first though.
The following code write audit entries to a Table called
'Audit'
with columns
'ActionType' //varchar
'TableName' //varchar
'PK' //varchar
'FieldName' //varchar
'OldValue' //varchar
'NewValue' //varchar
'ChangeDateTime' //datetime
'ChangeBy' //varchar
using System;
using System.Data;
using System.Data.SqlClient;
using Microsoft.SqlServer.Server;
public partial class Triggers
{
//A Generic Trigger for Insert, Update and Delete Actions on any Table
[Microsoft.SqlServer.Server.SqlTrigger(Name = "AuditTrigger", Event = "FOR INSERT, UPDATE, DELETE")]
public static void AuditTrigger()
{
SqlTriggerContext tcontext = SqlContext.TriggerContext; //Trigger Context
string TName; //Where we store the Altered Table's Name
string User; //Where we will store the Database Username
DataRow iRow; //DataRow to hold the inserted values
DataRow dRow; //DataRow to how the deleted/overwritten values
DataRow aRow; //Audit DataRow to build our Audit entry with
string PKString; //Will temporarily store the Primary Key Column Names and Values here
using (SqlConnection conn = new SqlConnection("context connection=true"))//Our Connection
{
conn.Open();//Open the Connection
//Build the AuditAdapter and Mathcing Table
SqlDataAdapter AuditAdapter = new SqlDataAdapter("SELECT * FROM Audit WHERE 1=0", conn);
DataTable AuditTable = new DataTable();
AuditAdapter.FillSchema(AuditTable, SchemaType.Source);
SqlCommandBuilder AuditCommandBuilder = new SqlCommandBuilder(AuditAdapter);//Populates the Insert command for us
//Get the inserted values
SqlDataAdapter Loader = new SqlDataAdapter("SELECT * from INSERTED", conn);
DataTable inserted = new DataTable();
Loader.Fill(inserted);
//Get the deleted and/or overwritten values
Loader.SelectCommand.CommandText = "SELECT * from DELETED";
DataTable deleted = new DataTable();
Loader.Fill(deleted);
//Retrieve the Name of the Table that currently has a lock from the executing command(i.e. the one that caused this trigger to fire)
SqlCommand cmd = new SqlCommand("SELECT object_name(resource_associated_entity_id) FROM
ys.dm_tran_locks WHERE request_session_id = @@spid and resource_type = 'OBJECT'", conn);
TName = cmd.ExecuteScalar().ToString();
//Retrieve the UserName of the current Database User
SqlCommand curUserCommand = new SqlCommand("SELECT system_user", conn);
User = curUserCommand.ExecuteScalar().ToString();
//Adapted the following command from a T-SQL audit trigger by Nigel Rivett
//http://www.nigelrivett.net/AuditTrailTrigger.html
SqlDataAdapter PKTableAdapter = new SqlDataAdapter(@"SELECT c.COLUMN_NAME
from INFORMATION_SCHEMA.TABLE_CONSTRAINTS pk ,
INFORMATION_SCHEMA.KEY_COLUMN_USAGE c
where pk.TABLE_NAME = '" + TName + @"'
and CONSTRAINT_TYPE = 'PRIMARY KEY'
and c.TABLE_NAME = pk.TABLE_NAME
and c.CONSTRAINT_NAME = pk.CONSTRAINT_NAME", conn);
DataTable PKTable = new DataTable();
PKTableAdapter.Fill(PKTable);
switch (tcontext.TriggerAction)//Switch on the Action occuring on the Table
{
case TriggerAction.Update:
iRow = inserted.Rows[0];//Get the inserted values in row form
dRow = deleted.Rows[0];//Get the overwritten values in row form
PKString = PKStringBuilder(PKTable, iRow);//the the Primary Keys and There values as a string
foreach (DataColumn column in inserted.Columns)//Walk through all possible Table Columns
{
if (!iRow[column.Ordinal].Equals(dRow[column.Ordinal]))//If value changed
{
//Build an Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "U";//U for Update
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = dRow[column.Ordinal].ToString();
aRow["NewValue"] = iRow[column.Ordinal].ToString();
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the entry
}
}
break;
case TriggerAction.Insert:
iRow = inserted.Rows[0];
PKString = PKStringBuilder(PKTable, iRow);
foreach (DataColumn column in inserted.Columns)
{
//Build an Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "I";//I for Insert
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = null;
aRow["NewValue"] = iRow[column.Ordinal].ToString();
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the Entry
}
break;
case TriggerAction.Delete:
dRow = deleted.Rows[0];
PKString = PKStringBuilder(PKTable, dRow);
foreach (DataColumn column in inserted.Columns)
{
//Build and Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "D";//D for Delete
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = dRow[column.Ordinal].ToString();
aRow["NewValue"] = null;
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the Entry
}
break;
default:
//Do Nothing
break;
}
AuditAdapter.Update(AuditTable);//Write all Audit Entries back to AuditTable
conn.Close(); //Close the Connection
}
}
//Helper function that takes a Table of the Primary Key Column Names and the modified rows Values
//and builds a string of the form "<PKColumn1Name=Value1>,PKColumn2Name=Value2>,......"
public static string PKStringBuilder(DataTable primaryKeysTable, DataRow valuesDataRow)
{
string temp = String.Empty;
foreach (DataRow kColumn in primaryKeysTable.Rows)//for all Primary Keys of the Table that is being changed
{
temp = String.Concat(temp, String.Concat("<", kColumn[0].ToString(), "=", valuesDataRow[kColumn[0].ToString)].ToString(), ">,"));
}
return temp;
}
}
The trick was getting the Table Name and the Primary Key Columns.
I hope this code is found useful.
Comments and Suggestion will be much appreciated.
Table 1
First_Name
Middle_Name
Surname
John
Ian
Lennon
Mike
Buffalo
Tyson
Tom
Finney
Jones
Table 2
ID
F
M
S
DOB
1
Athony
Harold
Wilson
24/4/67
2
Margaret
Betty
Thathcer
1/1/1808
3
John
Ian
Lennon
2/2/1979
4
Mike
Buffalo
Tyson
3/4/04
5
Tom
Finney
Jones
1/1/2000
I want to be able to create a trigger that updates table 2 when a row is inserted into table 1. However I€™m not sure how to increment the ID in table 2 or to update only the row that has been inserted.
A
ID
Name
1
Joe
2
Fred
3
Ian
4
Bill
B
ID
1
4
I want to be able to create a trigger so that when a row is inserted into table A by a specific user then the ID will appear in table B. Is it possible to find out the login id of the user inserting a row?
I believe the trigger should look something like this:
create trigger test_trigger
on a
for insert
as
insert into b(ID)
select i.id
from inserted i
where
--specific USER
how to create new CLR trigger from existing T-Sql Trigger Thanks in advance
View 3 Replies View RelatedWhen a row gets modified and it invokes a trigger, we would like to beable to update the row that was modified inside the trigger. This is(basically) how we are doing it now:CREATE TRIGGER trTBL ON TBLFOR UPDATE, INSERT, DELETEasupdate TBLset fld = 'value'from inserted, TBLwhere inserted.id= TBL.id....This work fine but it seems like it could be optimized. Clearly we arehaving to scan the entire table again to update the row. But shouldn'tthe trigger already know which row invoked it. Do we have to scan thetable again for this row or is their some syntax that allows us toupdate the row that invoked the trigger. If not, why. It seems likethis would be a fairly common task. Thanks.
View 4 Replies View RelatedSalve, non riesco a disabilitare un trigger su sqlserver nč da queryanalyzer, nč da enterprise manager.In pratica tal cosa riuscivo a farla in Oracle con TOAD, mentre qui nonriesco.Mi interessa disattivarlo senza cancellarlo per poi riattivarlo al bisognosenza rilanciare lo script di creazione.Grazie a tuttiHi I need to disable a DB trigger and I'm not able to do this neither withquery analyzer, neither with enterprise manager.I remeber this job was quite simple using TOAd in Oracle.I'm interested in making it disabled not delete it, without run creationscript.Thanks a lot to everybody.
View 4 Replies View RelatedHi,
I am not sure if this is the right forum to post this question.
I run an update statement like "Update mytable set status='S' " on the SQL 2005 management Studio.
When I run "select * from mytable" for a few seconds all status = "S". After a few seconds all status turn to "H".
This is a behaviour when you have an update trigger for the table. But I don't see any triggers under this table.
What else would cause the database automatically change my update?
Could there be any other place I should look for an update trigger on this table?
Thanks,
Hi all in .net I've created an application that allows creation of triggers, i also want to allow the deletion of triggers.
The trigger name is kept in a table, and apon deleting the record i want to use the field name to delete the trigger
I have the following Trigger
the error is at
DROP TRIGGER @DeleteTrigger
I'm guessing it dosen't like the trigger name being a variable instead of a static name
how do i get around this?
thanks in advance
-- ================================================
-- Template generated from Template Explorer using:
-- Create Trigger (New Menu).SQL
--
-- Use the Specify Values for Template Parameters
-- command (Ctrl-Shift-M) to fill in the parameter
-- values below.
--
-- See additional Create Trigger templates for more
-- examples of different Trigger statements.
--
-- This block of comments will not be included in
-- the definition of the function.
-- ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
CREATE TRIGGER RemoveTriggers
ON tblTriggers
AFTER DELETE
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
Declare @DeleteTrigger as nvarchar(max)
select @DeleteTrigger = TableName FROM DELETED
IF OBJECT_ID (@DeleteTrigger,'TR') IS NOT NULL
DROP TRIGGER @DeleteTrigger
GO
END
GO
Hi,
I have a trigger set on TABLE1 so that any update to this column should set off trigger to write to the AUDIT log table, it works fine otherwise but not the very first time when table1 has null in the column. if i comment out
and i.req_fname <> d.req_fname from the where clause then it works fine the first time too. Seems like null value of the column is messing things up
Any thoughts?
Here is my t-sql
Insert into dbo.AUDIT (audit_req, audit_new_value, audit_field, audit_user)
select i.req_guid, i.req_fname, 'req_fname', IsNull(i.req_last_update_user,@default_user) as username from inserted i, deleted d
where i.req_guid = d.req_guid
and i.req_fname <> d.req_fname
Thanks,
leo
Hi~, I have 3 questions about memory based bulk copy.
1. What is the limitation count of IRowsetFastLoad::InsertRow() method before IRowsetFastLoad::Commit(true)?
For example, how much insert row at below sample?(the max value of nCount)
for(i=0 ; i<nCount ; i++)
{
pIFastLoad->InsertRow(hAccessor, (void*)(&BulkData));
}
2. In above code sample, isn't there method of inserting prepared array at once directly(BulkData array, not for loop)
3. In OLE DB memory based bulk copy, what is the equivalent of below's T-SQL bulk copy option ?
BULK INSERT database_name.schema_name.table_name FROM 'data_file' WITH (ROWS_PER_BATCH = rows_per_batch, TABLOCK);
-------------------------------------------------------
My solution is like this. Is it correct?
// CoCreateInstance(...);
// Data source
// Create session
m_TableID.uName.pwszName = m_wszTableName;
m_TableID.eKind = DBKIND_NAME;
DBPROP rgProps[1];
DBPROPSET PropSet[1];
rgProps[0].dwOptions = DBPROPOPTIONS_REQUIRED;
rgProps[0].colid = DB_NULLID;
rgProps[0].vValue.vt = VT_BSTR;
rgProps[0].dwPropertyID = SSPROP_FASTLOADOPTIONS;
rgProps[0].vValue.bstrVal = L"ROWS_PER_BATCH = 10000,TABLOCK";
PropSet[0].rgProperties = rgProps;
PropSet[0].cProperties = 1;
PropSet[0].guidPropertySet = DBPROPSET_SQLSERVERROWSET;
if(m_pIOpenRowset)
{
if(FAILED(m_pIOpenRowset->OpenRowset(NULL,&m_TableID,NULL,IID_IRowsetFastLoad,1,PropSet,(LPUNKNOWN*)&m_pIRowsetFastLoad)))
{
return FALSE;
}
}
else
{
return FALSE;
}
Hi!
I am designing a dimension table which will include a short name column based on the (full) name column. For example say Product dimension where I will have ProductName and ProductShortName. ProductShortName will be the first 6 characters of ProductName. I could populate ProductShortName using:
Substring in the select when I select from the original system, e.g. SUBSTR(PRODUCT_NAME, 1, 6) AS ProductShortName
Create a derived column in the SSIS flow which does the same thing
Create the ProductShortName column as a computed column which uses substring on ProductName
Create a trigger that populates ProductShortName based on ProductName when a row is inserted or updated
Create a named calculation in the table in the Analysis Services project's data source view
Create a named query in the Analysis Services project's data source view
I usually use 1, and 5 or 6 would only be used if I only will create reports against the cubes. 3 seems easiest to maintain, so I am thinking about using that one, but maybe it is slow for the data flow as I imagine it must be something like using 4, or when is the column "created" at runtime, i.e. when the table is queried?
Which approach(es) do or would you use? Pros and cons?
Thanks!
I have trigger, but not execute somedata because insert few row in every second. I use java to insert data to SQL server 2005. Data inserted to a table but not executing trigger for some data.
For example 100 data every second inserted to a table.
If insert data one by one to a table trigger fires success.
Please Help me.
Hi,
Yesterday I asked for help in what I thought was a complicated query (Want to avoid cursors ... need help with query, but obviously wasn't (evidenced by the speed in which my question was answered and a comment made by another poster in the thread).
I have figured out how the query works. I even figured out how to modify it so that the date diff was displayed on the first row instead of the second:
SELECT t1.clt_num, t1.autbeg_dte, t1.autend_dte,
isnull(datediff(day, t1.autend_dte, t2.autbeg_dte), 0)
FROM #testit t1 left join #testit t2
ont1.clt_num= t2.clt_num
andt2.autend_dte= (select min(autend_dte) from #testit x where x.clt_num = t2.clt_num and x.autend_dte > t1.autend_dte)
order by t1.clt_num, t1.autbeg_dte
What I would like to know (if possible) is what “thought process� was used to come up with this solution or do you just “intuit� it (I hope not, because I sure don’t).
I know this is a very vague question, and maybe if I get a few responses I may be able to refine it.
Also can anybody recommend any books or web pages that teach this sort of thing (not syntax … I don’t have a problem with that).
Thanks,
Laurie
Hi,
I have a problem that I can solve in a procedural way but I would rather solve with set based and I am having a hard time wrapping my mind around it.
First I will try an English description of problem:
The tables involved are (data insert statements are at end of post) … The ProgramData table:
create table #ProgramData
(clt_num int,
pgm_num int,
beg_dte datetime)
Following business rules listed below this table will be used to determine updates and inserts into the CafasData table:
create table #cafasData
(clt_num int,
log_on varchar(10))
pgm_num are associeated with log_on values in a one to many relationship defined in this lookup table:
create table #cafas_log_on_lookup
(pgm_num int,
log_on varchar(10))
There can be multiple rows for one client in the ProgramData table but only one row for clients in the CafasData table. As a client can be in two or more programs that match to different log_ons at the same time a weight has been assigned each log_on and the log_on with the greater weight is used in the CafasData Table. DDL for weight table:
create table #CafasLogOnWeights
(Log_on varchar(10),
weight int)
Programs have begin and end dates (end dates for this problem will always be in the future so I did not include them in the ddl).
The basic rules for assigning a log_on to a client is:
1.Once in a log_on it will not change until after the program has ended. Regardless if there is another current log_on with more weight.
2.Always look at the minimum beg_dte that has an end date in the future (assume all test data does have an end date in the future).
3.If two or more programs start on the same date and none of them are for the current log_on then change the log_on to the one with the greatest weight (see #CafasLogOnWeights table below).
Ok ... If that is completely confusing I will try some pseudo procedural code for explaining what needs to be done:
For a given clt_num:
Get all rows in the ProgramData table with a minimum beg_dte
If one row then
If clt_num in CafasData then
Update CafasData with log_on =
associated log_on for given pgm_num
Else
Create new row in CafasData with log_on =
associated log_on for given pgm_num
End if
Else
If clt_num in CafasData then
If one of the pgm_nums translates to the current log_on value then
Do nothing
Else
Pick log_on with 'heaviest' weight
End if
Else
Create new row in CafasData with log_on with 'heaviest' weight
End if
End if
End for
Sample data for the four tables defined above:
insert into #cafasData (clt_num, log_on)
select 1, 'SB' union all
select 2, 'Intake' union all
select 3, 'HB' union all
select 5, 'Wrap' union all
select 6, 'SB' union all
select 7, 'Intake'
insert into #cafas_log_on_lookup (pgm_num, log_on)
SELECT 1220, 'SB' UNION ALL
SELECT 1222, 'Wrap' UNION ALL
SELECT 1223, 'Wrap' UNION ALL
SELECT 1228, 'HB' UNION ALL
SELECT 1229, 'HB' UNION ALL
SELECT 1233, 'Intake' UNION ALL
SELECT 1234, 'Other' UNION ALL
SELECT 1238, 'Other' UNION ALL
SELECT 1239, 'Intake'
insert into #CafasLogOnWeights (log_on, weight)
SELECT 'HB', 5 UNION ALL
SELECT 'Wrap', 4 UNION ALL
SELECT 'SB', 3 UNION ALL
SELECT 'Intake', 2 UNION ALL
SELECT 'Other', 1
insert into #ProgramData (clt_num,pgm_num,beg_dte)
Select 1, 1222, '11/30/2006' union all
select 1, 1220, '11/30/2006' union all
select 2, 1222, '11/30/2006' union all
select 2, 1220, '11/30/2006' union all
select 3, 1222, '11/30/2006' union all
select 3, 1220, '11/30/2006' union all
select 4, 1222, '11/30/2006' union all
select 4, 1220, '11/30/2006' union all
select 5, 1222, '11/30/2006' union all
select 5, 1220, '11/30/2006' union all
select 6, 1234, '10/30/2006' union all
select 6, 1222, '11/30/2006' union all
select 6, 1220, '11/30/2006' union all
select 7, 1234, '10/30/2006' union all
select 7, 1222, '11/30/2006' union all
select 7, 1220, '11/30/2006' union all
select 8, 1234, '10/30/2006' union all
select 8, 1222, '11/30/2006' union all
select 8, 1220, '11/30/2006' union all
select 9, 1223, '1/15/2008' union all
select 10, 1222, '1/1/2007' union all
select 10, 1223, '1/1/2007'
Expected Output (if I didn't make any mistakes or typos):
Inserted Rows
Clt_numlog_on
4Wrap
8Intake
10Wrap
Changed Rows
Clt_numlog_on
2Wrap
3Wrap
5Wrap
6Intake
No Change
Clt_numlog_on
1SB
7Intake
clt_num = 9 is a trick row as the begin date is in the future and there fore should have no affect on the CafasData table
Please let me know if this does not make any sense and give me the opportunity to clarify any points as I really do need to solve this problem.
Thanks in advance for any help
Laurie
P.S. I will be leaving work at 4:30 est. but will check back first thing in the morning. Please do not think I am ignoring any responses.
Dear all,
What is set based sql any body explain briefly.
Thanks&Regards,
Msrs
Does anyone know of a web based front end to Microsoft SQL Server 2005 Express edition? I tried using the SQL Server 2000 server web admin tool from microsoft, but it will not allow me to install it because it says it need the 1.1... framework installed. I have 1.0,1.1,and 2.0 installed, is there anyway to circumvent this? Or has anyone else figured another way to get the webadmin tool to work with 2005 express edition.
Thanks!
Is there a web based admin to administer MS SQL? If there is a free one, that would be better.
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