I have table T1 with the fields: ID,Type,Status,F1,F2,F3,F4 in database1. I also have T2 in Database2 which has the same fields and some extra fields. Now based on the T1.Type=Insert or Update, I need to perform either update or Insert in T2 based on where T1.ID=T2.ID and T1.Status<>’Done’. If this is a success, I need to set T1.Status=’Done’ for the updated records. So this should only be updated records. T1 is a frequently inserted table, so there might be more than one record coming there at the same time. How should I write my insert trigger and correctly set T1.Status=’Done’, any example would be greatly appreciated.
I have a table with a last_updated field and a review_date field. I would like to write a trigger that when the last_updated field is updated, it adds 6 months to the review_date field. This is what I started, not sure of how to finish it: CREATE TRIGGER Update_Review_Date ON dbo.Category_Type FOR Update AS
Hi, I am pretty new to MSSQL server environment. In Oracle i write Trigger and compile it at command prompt in case of SQL plus the same way i need to know where we write the script for SQL server. Is there any menu driven editor where we can write or simply writing a trigger in SQL Query analyzer and executing it will work
I have table T1 with the fields: ID,Type,Status,F1,F2,F3,F4 in database1. I also have T2 in Database2 which has the same fields and some extra fields.
Now based on the T1.Type=Insert or Update, I need to perform either update or Insert in T2 based on where T1.ID=T2.ID and T1.Status<>€™Done€™. If this is a success, I need to set T1.Status=€™Done€™ for the updated records. So this should only be updated records.
T1 is a frequently inserted table, so there might be more than one record coming there at the same time. How should I write my insert trigger and correctly set T1.Status=€™Done€™, any example would be greatly appreciated.
Hello All, As we have INSERTED,DELETED tables to trace what values are inserted and deleted, how to write triggers for Updates on the tables. Your help would be appreciated. Shiva Kumar
Hello ExpertsI am new in Sql triggers and i would like some helpI have a Table called ITEM and another callded SOURCE[ITEM]ItemNo,ItemName,SourceNo[Source]SourceNo,Sourcei want to create a Trigger so when i delete a record from [SOURCE] allthe records in [ITEM] where item.SourceNo = [SourceNo that I deletedfrom SOURCE]How can i do that?
I have a request to write to a file whenever new record added to the table.
When records insert row by row, it goes well. but when more than 2 session insert at the same time, sometimes it duplicate some record in the file. I try to add synchonize code ( like lock , Monitor) but it doesn't work. any idea ?
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.
how to i write a trigger to enforce this constraint..A rental can be made only if the customer is registered with the company and the car is not currently rented out. If not, the rental will not be successful.
Hello,While working through my encryption questions from preivous posts, I amfinding that I may have to resort to use triggers to do the encryption(not that this is the only way, but might be the best way for mycircumstances).I would like to create a trigger that will encrypt the field before thewrite is committed.I've found serveral posts about triggers, but nothing that fits what Iwish to do.Upon an insert or update I want to modify the ssn field with this:cast(EncryptByAsymKey(AsymKey_ID('Student_aKey'), cast(SSN asnvarchar(11))) as nvarchar(40))so, ssn '123456789' in SSN would become <something encrypted> in SSNThis is the trigger I have so far, but it is generating an error:CREATE TRIGGER F_Student_SSN.eSSNON F_STUDENT_SSNINSERT, UPDATEAS SELECT cast(EncryptByAsymKey(AsymKey_ID('Student_aKey'), cast(SSN asnvarchar(11))) as nvarchar(40))TIARob
1 . Can write more than one trigger for a single table(sql server 2000)?
2. how to create the editable gridview? While clicking particular cell it should be changed to Edit mode , and I want option for creating new row and delete option, search option
I have created a trigger to call a program that is written by our program. The program is basically read the record in the table and write to a text file, then delete the record from the table.
The trigger is a after insert trigger. After we added the trigger, we insert a record to the table. The result is that the record still and did not get deleted. Also, the text file didn't get created either. It seems that it take a long time for the record to be written to the table.
But if we just run the program (a exe file), it can write a text file in the folder and delete the record. the trigger is basically:
USE [Zinter] GO /****** Object: Trigger [dbo].[ZinterProcess] Script Date: 04/29/2014 18:34:56 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO
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
The T2 tabel has the same ID as T2.ID and T2.CheckBox1, T2.CheckBox2, T2. CheckBox3
Now, I need to check T1 and if T1.CheckBoxCol=1 then set T2.CheckBox1=1 else if T1.CheckBoxCol=2 then set T2.CheckBox2=1 else if T1.CheckBoxCol=3 then set T2.CheckBox3=1
Hello, I have MyTable with ID, IsYesNo fields ID is duplicated so I need perform select on MyTable with the following conditions: 1. Select all the ID distinct where IsYesNo=’Yes’ first 2. Then select all the ID distinct where IsYesNo=’No’ if ID is not in the first selection Combine these two and return the result
I'm sure this is really basic. I've created a simple form that on submittal, I would like the text boxes to be submitted to the database. I have successfully created the Datasource and it connects ok, but what code would i use to submit one text box for email address and a simple submit button. Is there an easy way to do this with VWDE? Thanks
Hi,I have a hotel reservation system.I need to implement Check availability (Room checking) function for the project.But I dont understand how do I start and write SQL for this.Here is table structureTblRooms------------RoomsIDRoomNameNoteunitPriceSeasonalOffersTblReservation----------------ReservationIDArrivalDateDepartureDateArrivalFromFlightNoPurposeOfVisitTblRoomsInventory-------------------RoomsInventoryIDTotalRoomsBookedRooms Should I add more fields or table to implement this or this is enough .please any body can help me
How to write this SQLSelectCommand="SELECT DISTINCT TblOrder.CustomerUID, TblOrder.OrderHiddenID, TblPayment.PaymentAmount, TblPayment.Result, TblOrder.OrderID FROM TblOrder CROSS JOIN TblPayment WHERE (TblOrder.CustomerUID = @IsCustomerID) AND (TblOrder.OrderHiddenID = @IsHiddenID) AND (TblPayment.Result = 'Pending')"How to get latest order id from this.I need to combine it with above sql.I mean i want to select above records but based on max orderid record.such as select latest records from ....above SQL where max orderid
