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!
I want to update a field with a trigger only if a specific field is updated.
When I try the code below, it updates the field when any field in the record is updated. Is there a way to only make look at picked_dt?
ALTER TRIGGER [dbo].[UpdatePickedDate]
on [dbo].[oeordlin_sql]
after update
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
[Code] .....
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.
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.
I am trying to accomplish the following.
There are two tables. the second one is a table that contains fields based on which the exclusion logic has to be written. It has 5 fields and there may be data in all of them or only in some of them.
The first and second table have one field in common - the Account number.(ACCT_NUM)
the exclusion is based in steps..
1) if it has all the fields in the second table for that account number, then compare all of them..
2) if only 4 of them are present,compare and check for null for the rest
3) if only 3 of them are present,compare and check for null for the rest
4) if only 2 of them are present,compare and check for null for the rest.
how do i do this... pls suggest
Thanks
Hi,
DONT KNOW IF IT IS POSSIBLE.. PLEASE SUGGEST.
Currently working on a upload module where in the data from excel file is imported to the destination tables. Data in the excel sheet comes in phases. All excel sheet columns data don't come at first shot. The excel sheet's data is dumped into temporary tables which inturn is looped using cursor's and gets finally updated to the actual tables.
Now, the problem I am facing is how do I update columns of the actual table with the data (i.e NON NULL values) available in the temporary table without tampering the data allready present in actual table.
Ideally what required is, update the actual table column values with the corresponding columns of temporary table ONLY for Non NUll column values of temporary table.
Temporary and Destination tables have 85 columns each. I don't want to write 85 update queries.
The scenario which I am facing is given below with 2 columns as an example.
1. Table 1 :- tbl_source (Temporary Table) has two columns src_Col1 & src_Col2
2. Table 2 :- tbl_destination (Actual Table) has two columns dest_Col1 & des_Col2
Scenario -1
---------------
tbl_Source Sample Data (after excel import to the temporary table)
------------------------
src_Col1 src_Col2
------------------
50 NULL
tbl_Destination Sample Data
------------------------
dest_Col1 dest_Col2
------------------
50 NULL
Scenario -2
---------------
tbl_Source Sample Data
------------------------
src_Col1 src_Col2
------------------
NULL 100
tbl_Destination Sample Data
------------------------
dest_Col1 dest_Col2
------------------
50 100
One update query which handles both scenarios.
Thanking you in anticipation.
Regards
I have a table called BidItem which has another table calledBidAddendum related to it by foreign key. I have another table calledBidFolder which is related to both BidItem and BidAddendum, based on acolumn called RefId and one called Type, i.e. type 1 is a relationshipto BidItem and type 2 is a relationship to BidAddendum.Is there any way to specify a foreign key that will allow for thedifferent types indicating which table the relationship should existon? Or do I have to have two separate tables with identical columns(and remove the type column) ?? I would prefer not to have multipleidentical tables.
View 26 Replies View RelatedI know there has to be a way to do this, but I've gone brain dead. Thescenario..a varchar field in a table contains a date range (i.e. June 1,2004 - June 15, 2004 or September 1, 2004 - September 30, 2004 or...). Theusers have decided thats a bad way to do this (!) so they want to split thatfield into two new fields. Everything before the space/dash ( -) goes intoa 'FromDate' field, everything after the dash/space goes into the 'ToDate'field. I've played around with STRING commands, but haven't stumbled on ityet. Any help at all would be appreciated! DTS?
View 1 Replies View RelatedI have a dilema, I need to have a delete trigger enabled to track user deletes to update an external history table. However, when the posting process runs for the table for which the delete trigger runs, all the records from that table are deleted. Th end result is that instead of capturing the specific deletes, it shows all recods being deleted. I know you can disable foreign keys and triggers as a whole, can you do it for specific triggers?
View 1 Replies View RelatedI want to copy FirstName and LastName cells from table1 to table2. Which FirstName and LastName cells depend on the username, i.e. which person has logged in.
Q1) How can this be done? (I have chosen to SELECT from Table1 and output to variables (C# code); then INSERT these variables into Table2. [Finding it very difficult]).
Any suggestions/comments would be appreciated. Thank you in advance.
Hi!I use SQL Server Express 2005 and would like that a trigger is fired automatically at a specific time. I have been developing a game which has a lot of periods with a start date and an end date. Every time a periode is finished the trigger should add new records for the next periode. The dates of the periodes are already setted at the beginning of the game. For example:periode startdate enddate1 23.08.2006, 15:00 24.08.2006, 17:002 24.08 .2006, 17:00 25.08.2006, 08:00and so onCan anyone help me how to do this? Thanks!
View 5 Replies View RelatedI have a table where I want to prevent user from deleting or setting a flag on a field to "y" with a database trigger (sql 2000). I understand the trigger for just one (stopping the delete, or stopping the field being changed to "y"). Should I have 2 seperate triggers or would there be a way to handle both.
View 4 Replies View RelatedHow to set ddl triggers for specific tables, instead of on entire database.
View 2 Replies View RelatedHi guys,
I need to get a column with the sum of the field "SUF" from table "JurnalTransMoves_1" when that field ("SUF") is ordered by the field "REFERENCE" from table "Stock", and Show the value only once.
The desired result should by something like:
Stock.REFERENCE
JurnalTransMoves.SUF
SUM(JurnalTransMoves.SUF) Group By Stock.REFERENCE
5752
10
60
5752
20
5752
30
5753
400
3000
5753
500
5753
600
5753
700
5753
800
5754
7
15
5754
8
Is there any chance to do that?
Thanks in advance,
Aldo.
Code Snippet
SELECT
Accounts.FULLNAME AS 'ACCOUNTS.FULLNAME',
Accounts.ACCOUNTKEY AS 'ACCOUNTS.ACCOUNTKEY',
Accounts.FILTER AS 'ACCOUNTS.FILTER',
Accounts.SORTGROUP AS 'ACCOUNTS.SORTGROUP',
AccSortNames.SORTCODENAME AS 'AccSortNames.SORTCODENAME',
Accounts.CreditTermsCode AS 'Accounts.CreditTermsCode',
CreditTerms.DETAILS AS 'CreditTerms.DETAILS'
CreditTerms.CURRENF AS 'CreditTerms.CURRENF'
CreditTerms.MONTH AS 'CreditTerms.MONTH',
CreditTerms.DAYS AS 'CreditTerms.DAYS',
CreditTerms.SHAREPRC AS 'CreditTerms.SHAREPRC',
CreditTerms.TEMF AS 'CreditTerms.TEMF',
CASE
WHEN CAST(Accounts.VatExampt AS int) = 0 THEN 'x'
WHEN CAST(Accounts.VatExampt AS int) = 1 THEN 'y'
ELSE 'Undefined' END AS 'VAT',
Stock.DOCUMENTID AS 'Stock.DOCUMENTID',
DocumentsDef.DOCNAME As 'DocumentsDef.DOCNAME',
CASE
WHEN CAST(Stock.DOCUMENTID as int) = 1 THEN Stock.DOCNUMBER
WHEN CAST(Stock.DOCUMENTID as int) = 3 THEN Stock.DOCNUMBER
WHEN CAST(Stock.DOCUMENTID as int) = 35 THEN Stock.DOCNUMBER
WHEN CAST(Stock.DOCUMENTID as int) = 120 THEN Stock.DOCNUMBER
WHEN CAST(Stock.DOCUMENTID as int) = 31 THEN Stock.REFERENCE
WHEN CAST(Stock.DOCUMENTID as int) = 44 THEN Stock.REFERENCE
WHEN CAST(Stock.DOCUMENTID as int) = 34 THEN Stock.REFERENCE
WHEN CAST(Stock.DOCUMENTID as int) = 43 THEN Stock.REFERENCE
WHEN CAST(Stock.DOCUMENTID as int) = 40 THEN Stock.REFERENCE
ELSE '' END AS 'Invoice No',
Stock.VALUEDATE AS 'Stock.VALUEDATE',
JurnalTrans.DESCRIPTION AS 'JurnalTrans.DESCRIPTION',
JurnalTrans.REF2 AS 'JurnalTrans.REF2',
JurnalTransMoves.SUF AS 'JurnalTransMoves.SUF',
JurnalTransMoves_1.SUF AS 'JurnalTransMoves_1.SUF',
JurnalTransMoves.TRANSID AS 'JURNALTRANSMOVES.TRANSID'
FROM
JURNALTRANSMOVES AS JurnalTransMoves_1
INNER JOIN JURNALTRANSMOVES AS JurnalTransMoves
INNER JOIN (SELECT DISTINCT JURNALTRANSID, RECEIPTSTOCKID, FULLMATCH, TABLFNUM, CKCODE, RSORT, RUSEFID FROM RECEIPTJURNALMATCH) AS ReceiptJurnalMatch_1 ON ReceiptJurnalMatch_1.JURNALTRANSID = JurnalTransMoves.ID
INNER JOIN ACCOUNTS AS Accounts ON JurnalTransMoves.ACCOUNTKEY = Accounts.ACCOUNTKEY
INNER JOIN JURNALTRANS AS JurnalTrans ON JurnalTransMoves.TRANSID = JurnalTrans.TRANSID
INNER JOIN STOCK AS Stock ON JurnalTrans.STOCKID = Stock.ID ON JurnalTransMoves_1.TRANSID = JurnalTrans.TRANSID AND JurnalTransMoves_1.ACCOUNTKEY = Accounts.ACCOUNTKEY
LEFT OUTER JOIN ITEMS AS Items
INNER JOIN STOCKMOVES ON Items.ITEMKEY = STOCKMOVES.ITEMKEY
INNER JOIN ITEMSORTNAMES AS ItemSortNames ON Items.SORTGROUP = ItemSortNames.ITEMSORTCODE ON Stock.ID = STOCKMOVES.STOCKID
LEFT OUTER JOIN ACCSORTNAMES AS AccSortNames ON Accounts.SORTGROUP = AccSortNames.ACCSORTCODE
LEFT OUTER JOIN CREDITTERMS AS CreditTerms ON Accounts.CREDITTERMSCODE = CreditTerms.CREDITTERMSCODE
LEFT OUTER JOIN DOCUMENTSDEF AS DocumentsDef ON Stock.DOCUMENTID = DocumentsDef.DOCUMENTID
WHERE
Accounts.SORTGROUP Between '3001' And '3020'
AND Accounts.ACCOUNTKEY IN ('123456')
ORDER BY Accounts.ACCOUNTKEY
I need to write a query to group records based on speed (specific value of zero). Consider the following scenario:
Table - Vehicle_Event
Vehicle_Id____Date_Time______________Speed
C1____________2012-06-28_10:10:00____5
C1____________2012-06-28_10:11:00____0
C1____________2012-06-28_10:12:00____0
C1____________2012-06-28_10:13:00____4
C1____________2012-06-28_10:14:00____3
[code].....
OUTPUT_Required:
Vehicle_Id____Date_Time___________________________ __________Speed
C1____________2012-06-28_10:10:00___________________________5
C1____________2012-06-28_10:11:00_to_2012-06-28_10:12:00____0
C1____________2012-06-28_10:13:00___________________________4
C1____________2012-06-28_10:14:00___________________________3
C1____________2012-06-28_10:15:00_to_2012-06-28_10:18:00____0
[Code] .....
I need the start and end time of consecutive records of the same vehicle with 0 speed ordered by date_time. If there is more than one consecutive record with zero speed it needs to be grouped together.
I have some duplicate values for my query results, about 200 duplicates out of 30000 rows. Of these 200 duplicates I want to keep the ones that have a higher value for... 'UpdatedBatchID'.
SELECT
IR.Id as 'ID'
, CAST(IR.Priority as varchar) as 'Priority'
, IRSupportGroupDN.DisplayName as 'Support Group'
, DATEADD(MI,DATEDIFF(mi,GETUTCDATE(),GETDATE()),IR.CreatedDate) as 'Created Date'
, DATEADD(MI,DATEDIFF(mi,GETUTCDATE(),GETDATE()),IR.ResolvedDate) as 'Resolved Date'
, SLOConfig.DisplayName as 'SLO'
, DATEADD(MI,DATEDIFF(mi,GETUTCDATE(),GETDATE()),SLOFact.TargetEndDate) as 'SLO Target'
, SLOStatusDN.DisplayName as 'SLO Status'
, SLOMetric.DisplayName as 'SLO Metric'
, SLOFact.UpdatedBatchId as 'UpdatedBatchID'
hi, please help me, i have a data driven site, i made a field that i call "Status"so this is how it should happens, there are three different gridviews in a single page, gridview1 filter is [status] = ok, gridview2 filter is [status] = fine, gridview3 filter is [status] = complete, so all gridview has its own <asp:hyperLinkField> at first the value of "Status" is ok, so it will appear in the gridview1, so when the user click on the <asp:HyperLinkField> of gridview1 it will go to a new page with a form view, this page has a button that when click will change the value of the status field to "fine", so that it will no longer appear to the gridview1 but it will now appear to gridview2 and same with the next <asp:HyperLinkField> click until it appears to the final gridview. so my question is how can i make the button that is capable of changing (update) the value my database field (status) to a specific value, that is not visible to the user thru codebehind or plain asp.net codes. please help me, if you need more info just reply.ThanksSALAMAT PO!
View 1 Replies View RelatedI've a select SELECT Field1, Field2, Field3 FROM Tablethe problem is that I can have filled Field1 OR Field2 ... I would like to create a new column in the result for see only the filled field if Field1 is = null or = ' ' I want to see Field2 if Field2 is = null or = ' ' I want to see Field1
View 2 Replies View RelatedI am attempting to combine to queries that I created and am not having success. I need to get a count on a field for a specific value and have to do this by gender and by an age range. So here is the query I came up with. I don't get any errors produced but I also don't get any results.
$query = "SELECT p1.sex, age_group, COUNT(CASE WHEN p4.q1 = 'Yes' THEN p4.q1 END) AS heart_attack FROM (select p1.sex,".
" CASE WHEN datediff(year, dateadd(day, -datepart(dayofyear, GetDate()), p1.birthday) , dateadd(day, -datepart(dayofyear, GetDate()), GetDate())) BETWEEN 11 AND 20 THEN '11-20'".
" WHEN datediff(year, dateadd(day, -datepart(dayofyear, GetDate()), p1.birthday) , dateadd(day, -datepart(dayofyear, GetDate()), GetDate()))
[code]....
I need to check if the latest record in a table for the current client, based on EFFECTIVE_DATE, has a value of 'Y' in the STATUS field. Sample records for client #19:
CLIENTEFFECTIVE_DATESTATUS
------ -------------- ------
19 08/13/2010Y
1901/10/2013N
1902/03/2014Y
If I run:
SELECT CLIENT, max(EFFECTIVE_DATE), STATUS
FROM FTABLE GROUP BY CLIENT, STATUS
I get the two latest records since STATUS is different:
CLIENTEFFECTIVE_DATESTATUS
------ -------------- ------
1901/10/2013N
1902/03/2014Y
I wrote the following and it works, but it may be causing 'Insufficient Disk Space' error from the database. Is there any way to write this query without temp table?
DECLARE @TEMPMAX
TABLE (CLIENT INT, EDATE DATE)
INSERT INTO @TEMPMAX (CLIENT, EDATE)
SELECT CLIENT_NO, max(EFFECTIVE_DATE)
[Code] ....
CLIENTEFFECTIVE_DATESTATUS
------ -------------- ------
1902/03/2014Y
I have a table (InfoTable) with a field with XML info like this:
<Status>
<IdStatus>1<IdStatus>
<NomStatus>Status 1<NomStatus>
<IdStatus>2<IdStatus>
<NomStatus>Status 2<NomStatus>
]Code] ...
I want to be able to select then NomProcess where IdProcess=3, for instance.
How can I do it?
I need a trigger to know who and when a char(1) column is changed. Would like to write the audit trail to its own table I can query and record before and after values.
DDL:
CREATE TABLE [dbo].[Test](
[Customer] [varchar](12) NULL,
[Active] [char](1) NULL DEFAULT ('N') --Must use char 1 b/c more than 2 possible values
)
Insert into Test (Customer, Active) Values ('Acme','Y')..I want trigger to tell me whowhenwhere this value was changed. If using sql auth capture client windows id if possible and write to audit table Update Test set Active = 'N'
I'm sure there's a way to do this, but I can't figure it out. I want to see if a field has a semi-colon in it and if it does display one thing, if not display another. But it doesn't just have a semicolon. It's a list of names, and if there is more than one name there will be a semi-colon between them.
I was hoping this would work:
=IIF(Fields!ID.Value LIKE "%;%", "yes", "no")
but it doesn't... I'm looking for something like:
=IIF(Fields!ID.Value CONTAINS ";", "yes", "no")
Any ideas?
Dear All,Suppose in the program a record is added to a table whoseprimary key is a identity field. If I really want to get the lastestvalue for that field after the insertion, is it the best way to useIDENT_CURRENT() to obtain this value?Thanks for your kind attentionYours faithfully,Benny
View 2 Replies View RelatedI’ve got an issue with extracting specific data from one field using charindex. Here’s an example of the dataset:
Cl_nr Var_data
20059942 ?;;300134BL10;?;;;;;;
20059958 ;2698;020225PU20;?;;;;;;
20059975 ;;100777ST20;?;;;;;;
20059976 ;;;;;;;;;
11001980 ;;051168PU20;?;;;;;;1001980
20034832 ;;060253BO10;?;;;;;;
20055246 ;;1108731;?;?;;;;;
20043656 ;;1022509;?;;;;;;
20059366 ;;1181750;31-12-2015;2;;;;;
20052712 ;;230626NO10;?;;;;;;
Goal is to get the data after the 2<sup>nd</sup> ; until the next ; starts. Ideal would be to catch everything between the 2<sup>nd</sup> ; en 3<sup>rd</sup> ; (number should be 10 characters).
If I try to select this data just using charindex it only goes until it finds the first ; (of course), what’s the best approach in this?
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
I have a table of "applicants" with unique applicant id and another table "reviews" with reviews which has unique id and Emplid and contains general program name like Math and then may contain 3 addition rows for specific program like Calculus, algebra, geometry etc.
There may or may not be a record for each applicant id in table reviews or there can be 1 or more than one record in reviews based on level of review( General or Specific).
All the general reviews has “Math” as Program_code but if there are more reviews, they can have Program_code like “Cal” , “Abr”, “Geo”
I want to join the tables so I can get all the records from both the tables where Program_code in reviews table is “Math” only.
That is I want to join the table and get all the records from reviews table where the program_code is “Math” only
How can I do that?
can i make a trigger to fire based on given date and time?
View 2 Replies View RelatedI'm trying to find a specific string (a name) and replace it with another inside of a VARCHAR(7000) field. Unfortunately, there are names like Ted and Ken that I'm trying to replace. I would like to leave words like Broken, admitted, etc... intact.
UPDATEtbl
SETBody = LEFT(REPLACE(tbl.Body, pm.OldFirstName, p.FirstName), 7000)
FROM Table tbl
JOIN Person p ON p.PersonID = tbl.PersonID
JOIN PersonMap pm ON pm.PersonID = p.PersonID AND LEN(pm.OldFirstName) > 2
WHEREtbl.Body LIKE '%[^a-z]'+pm.OldFirstName+'[., ]%
'The problem I'm running into is that the '[, ]%' in the LIKE excludes any record that ends with the FirstName because it is requiring either a space, comma or period after the name. Is there some way to add an empty string to the list of acceptable characters as that would cover any scenario in the data? I would prefer not to add all characters except space, comma and period, but I guess I could do that.
One 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
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
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