Lets say I have 4 columns in a table some with values
ID Description TotalCost Labor
1 blahblah 50.00 Null
2 Blah 75 18
3 moreblah 80.1 Null
I then do an update where labor is null. What I want my trigger to do is add labor to total cost.
I don't know what approach to take as I have no idea how to get at the total cost value for each row as its labor value is being updated.
Can anyone point me in the right direction.
I have two tables "Inventory" and "Product". User creates a product then assignes inventory to that product. The product table and the inventory table both have the same two fields, "GDS" and "prodID" and both share the same field and value of ProductID. I'm trying to create a trigger for the Inventory table so when the Inventory table has an update or insert, the values from Product.GDS and Product.prodID values go into the Inventory's record for Inventory.GDS and Inventory.prodID
I an having problems with the trigger as this is my first attempt in creating a trigger. I have the trigger on the Inventory table and this is what I so far which does not seem to be working, any suggestions (thanks0:
Code:
set ANSI_NULLS ON set QUOTED_IDENTIFIER ON go ALTER TRIGGER [inv] ON [dbo].[Inventory] AFTER INSERT,UPDATE AS BEGIN SET NOCOUNT ON;
Update Inventory Set GDS = i.GDS, prodID = i.prodId From Inserted i Inner Join Inventory inv ON i.ProductID = inv.ProductID END
hi, good day, i new in trigger and store procedure, can someone please suggest some advice and reference material in order to mastering trigger and store procedure ? thank you
Hi there I sorry if I have placed this query in the wrong place. I'm getting to grips with ASP.net 2, slowly but surely! When i try to access my site which uses a Sql Server 2005 express DB i am receiving the following error:
Server Error in '/jarebu/site1' Application.
Database 'd:hostingmemberasangaApp_DataASPNETDB.mdf' already exists.Could not attach file 'd:hostingmemberjarebusite1App_DataASPNETDB.MDF' as database 'ASPNETDB'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Database 'd:hostingmemberasangaApp_DataASPNETDB.mdf' already exists.Could not attach file 'd:hostingmemberjarebusite1App_DataASPNETDB.MDF' as database 'ASPNETDB'.Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210
This is the connection string that I am using: <connectionStrings> <add name="ConnectionString" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|ASPNETDB.MDF;Integrated Security=True;Initial Catalog=ASPNETDB;User Instance=True" providerName="System.Data.SqlClient"/> </connectionStrings>
The database is definitly in the folder that the error message relates to. What I'm finding confusing is that the connection string seems to be finding "aranga"s database. Is it something daft?
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.
Are 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'
This 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.
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.
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)
When 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.
Salve, non riesco a disabilitare un trigger su sqlserver nè da queryanalyzer, nè 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.
Hi, 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?
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
Hopefully this is the right place to post this, I am trying to learn ADO.Net programming using VWD Express with SQL Express... I tried to do the walk-through tutorial on ADO.Net through the asp.net tutorial. The walk-through asked you to download and install a script (check) then it said to open a command window with sql server running (check) and then to copy all of this special script code into to bind the database to the web page (not check). Everything pretty much went down hill after that part. I couldn't get the Update/Cancel/Delete buttons. After that dissapointing attempt at learning I decided to just try and make my own database. All was going pretty well until I try to add the UPDATE/DELETE fields after adding the WHERE clause. No go. So, I don't know if I'm just totally flubbing this up or if this is a common problem. Do I need the two or three pages of custom script like the Microsoft example to make a database work?
1 Hi, I'm a complete newbie at this, and need some help I want to import a text file into a DB. I know how to set it up in the DTS, however when I check the DB each line from the text file is in a seperate row. What have I missed? I want the file just in one row, like its a memo.
2 What do I use to connect to a SQL DB on the web so i can see the DB and all the tables
3 Also if I want to add data to a DB is that done on the server, or do I change my copy of the DB and re-upload
I've imported an access .mbd table into SQL 7.0, and need to know the best way to overwrite my SQL 7.0 table with the new Updated information that is contained in the access table. I've read a little bit about update tables, but is there an easy way to overwrite an entire table without having to specify each row and column?
Ok, not sure if this is where i should post this, but here goes.
I am trying to setup a database to handle RMA stuff at work. I need to be able to access the DB from numerous systems at once. Now i know NOTHING about SQL or any other DB for the most part. Messed around with Access some, but nothing major.
Is there anyone that could help me, explain how, or at least point me in the right direction?
I have MS SQL server 2000. Any help, ideas, or suggestions would be great!!
Hey! I',m totally new to Ms SQL Server. I'm currently trying to import a database from LINUX using SQL+ (Oracle) to MS SQL Server. Any suggestions on how this could be achieved would be most helpful
I need to know how to write a sql statement for VB to Microsoft Access for the following criteria.
TblEmployees only Field to be concerned with is EmployeeID -Its PK TblEmpAttendane has these fields: EntryID - Pk EmployeeID - Fk Date- A text form date validated through vb to avoid hassle Value-A single digit value that can be alpha OR numeric
To get the Date range for the current month I use variables to store the First and last day of the month(in a CUSTOM calendar control).
I have been trying to use this Sql statement(that wont work): SqlString = "SELECT * FROM TblEmpAttendance WHERE Date BETWEEN '" & FirstDay & "' AND '" & LastDay & "'"
I need to: 1.)using the current EmployeeID (from TblEmployees) 2.) find the same EmployeeID in TblEmpAttendance 3.)Get the date range for the current month and year(valid days currnt mo.) -these date are supplied by the variables "FirstDay" AND "LastDay" as seen in above SqlString
4.) Find the Values associated with the dates and EmployeeID
I have a table with 10 records: 10, 9, 8, 7 ... and so on. I want to SELECT the top 3 records starting with the second record on the list (which in this case is 9.) So the result should be 9, 8, and 7. What would be the correct SQL statement for this?
I tried "SELECT TOP 3 * FROM tableXXX WHERE (FieldID<>(SELECT TOP 1 * FROM tableXXX ORDER BY FieldID DESC) ORDER BY FieldID DESC" but sure as heck it didn't work. Can anyone help?
just for understanding a simple iif statement: I like to set a numeric value to 0, if it is smaller than 0. This expression shall be valid over all dimensions for a specific measure
like Iif([Measures].[Provision Ankauf]<0,0,[Measures].[Provision Ankauf] )
it's not working, Pivottable returns ##VALUE everywhere
I have two problems. I am currently using SQL Server express and SQL Server Management Studio Express locally. i have a DotNetNuke website running on the web with IHostASP.Net
Story:
I noticed that my SQL Server 2005 database with IHostASP.net was 350MB. It was only 22 2 months ago and I have had about 100 users sign up. I then connected to my live database via SQL Server Management Studio Express and shrunk the database. No errors and the database was reduced to 24MB - Great I thought!
I went and checked the website and all was great for about an hour then the site went down with the following error:
Error The transaction log for database 'classcampers' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases
Anyone know what to do.
Anyway, I have downloaded a .bak of my database as supplied by my host. However I cant figure out to restore this file back to my live database. What are the steps involved?
Do I create a new local database from the .bak and then somhow restore this back to my live one, or do i apply this .bak file strainght to my live database using SQLMSE. Any tutorials becuase I have been trying to apply this restore all day
Thansk for any advice in advance cheers Albertramsbottom:eek:
Hi, which is current running mostly used version of sql server and what was the previous version? how can we track down a query bad performance in sql server(like explain plan,stats..etc..in oracle)
Ive been learning SQL slowly and I need help for a projet I am doing.
I currently would like to compare identical files in a 2 seperate folder. Not only would I like to compare if the files are the same name, but when they are I would like to compare the file contents.
SO basically this is what I need to do: -Compare file names in folder A with files in folder B -If a match is found, compare file contents -If file contents are same, do nothing. If file contents are different, move file to folder C.
I finally decided to do our ASP application using VB, .NET and MSSQL.
My questions are simple, but I cannot find all the answers, so anything you can offer will be greatly appreciated.
Please explain how licenses (CALS) work with regard to Windows Server and MSSQL. For example, suppose we have 200 clients all logged into our application, but only say 40 are currently active (meaning they are adding data, running reports, etc....), but they are not all clicking the "DO" button at the same time. So how many Windows server and/or MSSQL seats, licenses, CALS, cpu's etc.... (whatever they are called) will I need?
How many users do you think a "well designed" ASP application built using AJAX, ActiveX, VB, .NET and MSSQL can a single cpu reasonably support? This application will serve east coast to west coast with heavy traffic from say 7am to 9am and 2pm to 4pm in each time zone. At what point (or what should I look for) to say, you need more memory, more processors, more servers, etc......????
How does one protect (or build in) a method to deal with index corruptions, etc???? Does that occur in MSSQL? If so, generally, what are causes and fixes?
The application will serve many chapters. Many chapters will be solo (by themselves), but we also expect district wide, where multiple chapters (25 to 75) in one district will use the application. We can expect, during time frames mentioned above, that each chapter will have 200 to 400 transactions per am time and same per pm time.
has anyone had great success with IronSpeed?
Lastly, can anyone suggest some good windows web hosting companies?
Hi i have 2 columns in the same table.....one column retrieves all registered students, the other column retrieved registered students but who have not completed a required survey.
The 2 sql statements are almost the same except that the 2nd one does another comparison at another table....(i.e. where student_id not in (select student_id from other_t).
I am trying to combine the 2 sql statements into a derived table where results will be displayed as follows:
registered students | students(incomplete surveys)
I have a database and in my database there are 5 different tables....
One of the tables is called "dvds" and another one is calles "reports"
What I want to do is, I would like to copy and paste everything in "reports" (column name: dvd) to "dvds" table (column name: name).
And I wan the SQL parameter to check everytime before it writes to "name" column in case that entry is already there. If the entry is already there then ignore and do not write, if it is not there then write it.
I am very sorry about my english and my knowledge on SQL.
Can anyone please help me to product this SQL command?
