Hello,
I have two tables: Orders and Appoitment. Each order can have up to 2 appointments. Now, I need a SELECT statement that gives me this:
ORDER APPT
1 appt1 appt2
2 appt1 appt2
and not this:
ORDER APPT
1 appt1
1 appt2
2 appt1
2 appt2
In other words, I want to merge the two appointments for each order. I tried using the merge statement but it does not work. Tried to google but saw nothing. My database is SQL server. Please help. Thanks
I've have a need with SQL Server 2005 (so I've no MERGE statement), I have to merge 2 tables, the target table has 10 fields, the first 4 are the clustered index and primary key, the source table has the same fields and index.Since I can't use the MERGE statement (I'm in SQL 2005) I have to make a double step operation, and INSERT and an UPDATE, I can't figure how to design the WHERE condition for the insert statement.
We have a current database table (PAF) that had a new column added to it named 'Email'. This table also has some other columns including one named [Employee Number].We also have an Excel spreadsheet that has 2 columns 'Employee Number' and 'E-mail Address'. I need to take the E-mail Address field from the spreadsheet, match it up with the employee number between the spreadsheet and PAF table, and then insert the email address into the database column.I'm guessing I would do this using a MERGE statement, correct?
I want to combine update and insert statement into single statement as follows.
MERGE INTO MyTable USING MyTempTable ON MyTempTable.MatchingField1 = MyTable.MatchingField1 WHEN MATCHED THEN UPDATE UpdateField1 = MyTempTable.UpdateField1 WHEN NOT MATCHED THEN INSERT VALUES(MyTempTable.MatchingField1, MyTempTable.UpdateField1)
Currently if I try to run this stmt, it gives error "Incorrect syntax near the keyword 'INTO'."
is there anyway i can merge select statement and insert statement together?
what i want to do is select few attributes from a table and then directly insert the values to another table without another trigger.
for example, select * from product and with the values from product, insert into new_product (name, type, date) values (the values from select statment)
i have a little question. Is it possible you can't perform an insert statement on a table wich is replicated with merge replication?
I set the replication up and everything works fine, but if i want to perfom an insert statement on the table, i get an error that the values i want to add aren't the same as the one in the table.
I know that merge replication creates a new column and I think that's the problem.
Can someone help me solve this or confirm that you can't perform an insert statement on a replicated table?
I have a stored procedure that runs (SQL Server 2012 (SP1) Standard Ed) daily and I never had any problem with this stored procedure. However, there is MERGE statement on the stored procedure and I see an error saying that the MERGE statement failed..Here are the stored procedure and error message:
-- FlushQueue CREATE PROCEDURE [dbo].[FlushQueue] (@RowCount as int = 10000) AS BEGIN SET NOCOUNT ON; SET XACT_ABORT ON;
[code]....
The MERGE statement attempted to UPDATE or DELETE the same row more than once. This happens when a target row matches more than one source row. A MERGE statement cannot UPDATE/DELETE the same row of the target table multiple times. Refine the ON clause to ensure a target row matches at most one source row, or use the GROUP BY clause to group the source rows. [SQLSTATE 42000] (Error 8672). The step failed.
Table definition:---CREATE TABLE [dbo].[ImportDefinitions] ( [NodeName] [varchar](20) NOT NULL, [ProcedureName] [varchar](100) NOT NULL, [FilePrefix] [varchar](20) NOT NULL, [ImportDelay] [int] NOT NULL CONSTRAINT [DF_ImportDefinitions_ImportDelay] DEFAULT ((0)),
skip locked records in a MERGE statement and output the list of skipped records.
Through the documentation, internet posts and testing, I believe it is NOT possible. MERGE acts like a single atomic DML statement, and therefore cannot avoid locked records.
I can use the READPAST hint, which will skip the row-locked records. However, it could actually insert duplicate keys in certain cases (as it is ignoring records, i would guess), which would not be acceptable.
In the following t-sql 2012 merge statement, the insert statement works but the update statement does not work. I know that is true since I looked at the results of the update statement:
Merge TST.dbo.LockCombination AS LKC1 USING (select LKC.comboID,LKC.lockID,LKC.seq,A.lockCombo2,A.schoolnumber,LKR.lockerId from [LockerPopulation] A JOIN TST.dbo.School SCH ON A.schoolnumber = SCH.type
[Code] ...
Thus can you show me some t-sql 2012 that I can use to make update statement work in the merge function?
I was using Type 2 for one of our Fact table.... and need to put a flag to know which one is the Current record... I couldn't able to figure how to implement logic in the merge statement... This is an example Query ....I was using like this for my fact table...
Basically I need to track CustomerName and City... So I need a Currentflag (Y) for latest record....
MERGE INTO [dbo].[TargetCustomer] AS TRG USING [dbo].[MyCustomers] AS SRC ON TRG.[CustomerID] = SRC.[CustomerID] AND TRG.[CustomerName]=SRC.[CustomerName] AND TRG.[City]=SRC.[City]
In a t-sql 2012 merge statement that is listed below, the insert statement on the merge statement listed below is not working. The update statement works though.
Merge test.dbo.LockCombination AS LKC1 USING (select LKC.lockID,LKC.seq,A.lockCombo1,A.schoolnumber from [Inputtb] A JOIN test.dbo.School SCH ON A.schoolnumber = SCH.type JOIN test.dbo.Locker LKR ON SCH.schoolID = LKR.schoolID AND A.lockerNumber = LKR.number
[code]...
Thus would you tell me what I need to do to make the insert statement work on the merge statement listed above?
I use the merge statement in a sproc to insert, update and delete records from a staging table to a production table.
In the long sql, here is a part of it,
When Matched and
((Student.SchoolID <> esis.SchoolID OR Student.GradeLevel <> esis.GradeLevel OR Student.LegalName <> esis.LegalName OR Student.WithdrawDate <> esis.WithdrawDate Student.SPEDFlag <> esis.SPEDFlag OR Student.MailingAddress <> esis.MailingAddress)
Then update
Set Student.Schoolid=esis.schoolid, .....
My question is how about if the column has null values in it.for example
if schoolID is null in production table is null, but in staging table is not null, will the <> return true.or if either side of <> has a null value, will it return true.
I don't want it to omit some records and causing the students records not get updated.If not return true, how to fix this?
Can we insert into multiple table using merge statement?I'm using SQL Server 2008 R2 and below is my MERGE query...
-> I'm checking if the record exist in Contact table or not. If it exist then I will insert into employee table else I will insert into contact table then employee table.
WITH Cont as ( Select ContactID from Contact where ContactID=@ContactID) MERGE Employee as NewEmp Using Cont as con
We have a SSIS package which loads the data from csv files to DB. It only loads the new entries ie if the row already exists in the tables than it doesn't insert it. For this we load the CSV to temp tables for respective schemas and than those are compared with base tables of respective schemas and inserted new rows. For this we use Merge statement.
I have created mergse statement using SCD2.where I am inserting the data if my BBxkey is not matching with target and updating the rows if the bbxkey is matching and rowchecksum is different.
Working of Store procedure
There are 2 scenario covered in this procedure on the basis of that ETL happening.
There are 2 columns deriving from source table at run time, one is BBxkey which is nothing but a combination of one or more column or part of column and another column is a Rowchecksum column which is nothing but a Hashvalue of all the column of the tables for a row.
Merge case 1:-WHEN NOT MATCH THEN INSERT
If source BBxkey is not there in Archive table that means if BBxKey is null then those records are new and it will directly inserted into Archive table.
Merge case 2:-WHEN MATCH THEN UPDATE
If Source.BBxkey=Target.BBxkey && Source.Rowchecksum<>Target.Rowchecksum then this means source records are available in Archive table but data has been changed, in this case it will update the old record with latestversion 0 and insert the new record with latestversion 1.
my sp failing when source having more than 1 same bbxkey.
error [Execute SQL Task] Error: Executing the query "EXEC dbo.ETL_STAGE_ARCHIVE ?" failed with the following error: "The MERGE statement attempted to UPDATE or DELETE the same row more than once. This happens when a target row matches more than one source row. A MERGE statement cannot UPDATE/DELETE the same row of the target table multiple times. Refine the ON clause to ensure a target row matches at most one source row, or use the GROUP BY clause to group the source rows.".
In a t-sql 2012 merge statement that is listed below, the insert statement on the merge statement listed below is not working. The update statement works though.
Merge test.dbo.LockCombination AS LKC1 USING (select LKC.lockID,LKC.seq,A.lockCombo1,A.schoolnumber from [Inputtb] A JOIN test.dbo.School SCH ON A.schoolnumber = SCH.type
[Code] ....
Thus would you tell me what I need to do to make the insert statement work on the merge statement listed above?
In order to feed a fact table of a dwh from a staging table I'm using the MERGE statement in order to control insert and update operations. It is possible that the staging table has duplicate rows respect to the fields controlled in the merge condition:
When I run the first time the MERGE statement unwanted rows could be inserted in the fact table.
Does the MERGE statement allow to manage this case or do I need to filter data from the staging table before to write them into the fact table?
This website describes how Merge statements should be optimized by the use of indexes on the target?source tables: [URL]..... It says that a clustered index should be created on the join column in the target and a unique covering index on the source table.
I have read in other articles that insert/delete/update statements perform worse on tables with clustered indexes as the leaf level pages will have to be reorganized.
Why in the case of Merge statement having a indexes actually improve the performance of insert/delete/update statements?
I'm using a Merge statement to update/insert values into a table. The Source is not a table, but the parameters from a Powershell script. I am not using the Primary Key to match on, but rather the Computer Name (FullComputerName).
I am looking on how-to return the Primary Key (ComputerPKID) of an updated record as "chained" scripts will require a Primary Key, new or used.As an aside: the code below does return the newly generated Primary Key of an Inserted record.
In my source query I want to change the value of Source table ,Destination table and BBX expression dynamically on the basis of input file.
Purpose of making dynamic is that I have created separate sp for all the input, my clients want to have sungle dynamic sp which will execute on the basis of input file.this input file name I wil get fromm variable which i have created in SSIS Package.
Lets consider @File_name is the variable in package which store the file name
if file name is CCTFB then my query should take the Source table ,Destination table and BBX expression value from file master table.
Like that I have 100 of source query and evry query have diffrent number of columns. How can I change the column number in uodate and insert statement dynamically on run time.
CAST(SUBSTRING(Col001,1,6) + SUBSTRING(Col002,1,10) AS varchar(100)) :-It creates a key for comparing, this value i can take it from filemaster HASHBYTES('MD5', CAST(CHECKSUM(Col001, Col002,Col003,Col004) AS varchar(max))) -here numberv of column need to be changed . (SUBSTRING(SOURCE.Col001,1,6) + SUBSTRING(SOURCE.Col002,1,10)) this condition also i can take it from file master.
[Code] ....
I am able to get inserted and updated rowcount, but not able to get the matching records count.
I have created a Dynamic Merge statement SCD2 Store procedure , which insert the records if no matches and if bbxkey matches from source table to destination table thne it updates old record as lateteverion 0 and insert new record with latest version 1.
I am getting below error when I ahve more than 1 bbxkey in my source table. How can I ignore this.
BBXkey is nothing but I am deriving by combining 2 columns.
Msg 8672, Level 16, State 1, Line 6
The MERGE statement attempted to UPDATE or DELETE the same row more than once. This happens when a target row matches more than one source row. A MERGE statement cannot UPDATE/DELETE the same row of the target table multiple times. Refine the ON clause to ensure a target row matches at most one source row, or use the GROUP BY clause to group the source rows.
I would like to have a 'counter' table which will hold the last used number and return a new number. This is my schema:
if object_id('tempdb.dbo.#Counter', 'u') is not null drop table #Counter go create table #Counter ( Id int not null ) go if exists (select * from #Counter) update #Counter set Id = Id + 1 output inserted.Id else insert into #Counter (Id) output inserted.Id select 1
If the table is empty it returns 1 else it returns the next number (Id + 1). But this query is not atomic (i guess...?) so it could evaluate that the #Counter table is empty and then try to insert into the table, but inbetween someone else executes the insert also. Could this query be rewritten with the merge statement so that the whole operation is atomic?
I am new to use MERGE statement. The MERGE cannot find any match Cardnumber in the target table. It inserts row into an existing row on the target table causing SQL rejected with duplicate key not allowed. The CardNumber is defined as a primary key on the target table with no duplicate allowed. Below snippet stop when MERGE insert a row exists on the target. The source table contains multiple rows with the same Cardnumber because it is a transactional table with multiple redemptions.
If MERGE cannot handle many (source) to one (target) relationship, what other method that I can change to in order to update the target GiftCard table which keeps track of gift card balance?
Below is the error message:
Msg 2627, Level 14, State 1, Line 5 Violation of PRIMARY KEY constraint 'PK_GiftCard'. Cannot insert duplicate key in object 'dbo.GiftCard'. The duplicate key value is (63027768).
2 Users in 2 locations issue updates to the same table. 1 updating 1 column and the other updating another column. Now in reality the actual Stored Procedure issuing the update statement is passed in all the possible columns that could change and builds an update statement that updates all columns even the ones that havent changed.
Will this break Merge Replications conflict tracking? Or does SQL Server 2005 Merge Replication pickup that in reality the 2 updates only in reality changed the values in 2 columns.
declare tableName table ( uniqueid int identity(1,1), id int, starttime datetime2(0), endtime datetime2(0), parameter int )
A stored procedure has new set of values for a given id. Sometimes the startime and endtime are the same, in which case I update the value of parameter. Sometimes I add a new time range (insert statement), and sometimes I delete a time range (delete statement).
I had a question on merge, with insert, delete and update and I got that resolved. However I have a different question regarding performance of the merge statement.
If my target table has hundreds of millions of records and I want to delete/update/insert a handful of records, will SQL server scan the entire target table? I can't have:
merge ( select * from tableName where id = 10 ) as target using ...
and I can't have:
merge tableName as target using [my query] as source on source.id = target.id and source.starttime = target.startime and source.endtime = target.endtime where target.id = 10 ...
This means I cannot filter the set of rows in the target table to a handful of records where id = 10.
With merge/insert statements ...Is DISTINCT best way to handle problem of source table containing duplicate rows, along with WHERE NOT IN statement? the source dataset is large and having to do DISTINCT and further filtering is taxing on the ETL.
Problem Summary: Merge Statement takes several times longer to execute than equivalent Update, Insert and Delete as separate statements. Why?
I have a relatively large table (about 35,000,000 records, approximately 13 GB uncompressed and 4 GB with page compression - including indexes). A MERGE statement pretty consistently takes two or three minutes to perform an update, insert and delete. At one extreme, updating 82 (yes 82) records took 1 minute, 45 seconds. At the other extreme, updating 100,000 records took about five minutes.When I changed the MERGE to the equivalent separate UPDATE, INSERT & DELETE statements (embedded in an explicit transaction) the entire update took only 17 seconds. The query plans for the separate UPDATE, INSERT & DELETE statements look very similar to the query plan for the combined MERGE. However, all the row count estimates for the MERGE statement are way off.
Obviously, I am going to use the separate UPDATE, INSERT & DELETE statements. The actual query plans for the four statements ( combined MERGE and the separate UPDATE, INSERT & DELETE ) are attached. SQL Code to create the source and target tables and the actual queries themselves are below. I've also included the statistics created by my test run. Nothing else was running on the server when I ran the test.
Server Configuration:
SQL Server 2008 R2 SP1, Enterprise Edition 3 x Quad-Core Xeon Processor Max Degree of Parallelism = 8 148 GB RAM
SQL Code:
Target Table: USE TPS; IF OBJECT_ID('dbo.ParticipantResponse') IS NOT NULL DROP TABLE dbo.ParticipantResponse;
I have a table which is updated daily using a MERGE statement. As records are insert, updated and deleted, I am saving the OUTPUT from the MERGE statement into a history table with a timestamp and action$ column appended to the record.
Using this history table, I'd like to rebuild the data based on specific past date. I was able to create a stored procedure that inspects each record in the history table and apply it to the data in a temp table. The stored procedure solution uses multiple queries to rebuild the data at a point in time. I was curious if there was an easier and more efficient solution using a table function.
How do I pass a single column of values from a successful merge join to an EXECUTE SQL statement so it can be used with an "IN" criteria of the WHERE clause? Here's an example of my update statement with two random key values:
UPDATE dbo.MyTable SET MyStatus = 1 WHERE MyPK IN ("XYZ123", "DEF890")
Is this even possible in SSIS, or am I better off using a loop and running the update EXECUTE SQL Statement for each individual key value, as in the following example?
UPDATE dbo.MyTable SET MyStatus = 1 WHERE MyPK = "XYZ123" UPDATE dbo.MyTable SET MyStatus = 1 WHERE MyPK = "DEF890"
