I have a requirement I need to choose only a selected number of records from a group. However, I also need to flag the not choosen records in the even that they will need to be referred to at a later date.
I have over 80K records in Segment 1. The requirement is to select 50000 records
I've tried this:
UPDATE mytable
SET [SuppressionReason] = 'REC LIMIT REACHED - S1'
WHERE
[ID] NOT IN
(
SELECT TOP 50000 [ID] FROM mytable
WHERE segment = '1'
);
However, this results in 0 records getting labeled in the SuppressionReason field as 'REC LIMIT REACHED - S1'. What am I missing or doing wrong?
Based on testing with the following code, are you absolutely certain that you have more than 50,000 records?
DROP TABLE IF EXISTS #TEMP
CREATE TABLE #TEMP
(
ID INT IDENTITY(1,1),
FIRSTNAME VARCHAR(10),
LASTNAME VARCHAR(10),
SEGMENT INT,
SUPPRESSION VARCHAR(10)
)
INSERT INTO #TEMP
(FIRSTNAME, LASTNAME, SEGMENT)
VALUES
('JOHN', 'KRAMER',1),
('MATT','GEORGE',1),
('PHILIP','MCCAIN',1),
('ANDREW','THOMAS',1)
UPDATE #TEMP
SET SUPPRESSION = 'YEP'
WHERE ID NOT IN
(SELECT TOP(2) ID FROM #TEMP WHERE SEGMENT = 1)
SELECT * FROM #TEMP
This produces the following output, which I suspect is exactly what you are expecting to get.
1 JOHN KRAMER 1 NULL
2 MATT GEORGE 1 NULL
3 PHILIP MCCAIN 1 YEP
4 ANDREW THOMAS 1 YEP
I have a temp table that looks like this:
FirstName
LastName
DOB
Sex
Age
ExternalID
In my stored procedure I'm inserting these values into a regular table that has the following structure:
ID identity(1,1)
FirstName
LastName
So, I do this:
Insert into myTable
select FirstName, LastName from TempTable
During the insert I need to insert primary key from main table back into temp table "ExternalID" column. How can this be achieved?
I tried using OUTPUT statement but it only allows to insert to a separate table and then I have no way to map back to temp table
I need to insert generated IDs to column ExternalID in temp table right after the insert. FirstName and LastName are not unique.
One possible solution would be to use loop and insert one row at a time. This way, I can update temp table row with scope_identity(). But I want to avoid using loops.
Try using MERGE instead of INSERT.
MERGE allows you to output a column you didn't insert, such as an identifier on your temp table. Using this method, you can build another temporary table that maps your temp table to the inserted rows (named #TempIdTable in the sample below).
First, give #TempTable its own primary key. I'll call it TempId. I'll also assume you have a column on #TempTable to store the returned primary key from MyTable, ID.
--Make a place to store the associated ID's
DECLARE #TempIdTable TABLE
([TempId] INT NOT NULL
,[ID] INT NOT NULL)
--Will only insert, as 1 never equals 0.
MERGE INTO myTable
USING #TempTable AS tt
ON 1 = 0
WHEN NOT MATCHED
THEN
INSERT ([FirstName]
,[LastName])
VALUE (t.[FirstName]
,t.[LastName])
OUTPUT tt.[TempId], inserted.[ID] --Here's the magic
INTO #TempIdTable
--Associate the new primary keys with the temp table
UPDATE #TempTable
SET [ID] = t.[ID]
FROM #TempIdTable t
WHERE #TempTable.[TempId] = t.[TempId]
I was working on a similar issue and found this trick over here: Is it possible to for SQL Output clause to return a column not being inserted?
Here's the full code I used in my own testing.
CREATE TABLE [MQ]
([MESSAGEID] INT IDENTITY PRIMARY KEY
,[SUBJECT] NVARCHAR(255) NULL);
CREATE TABLE [MR]
([MESSAGESEQUENCE] INT IDENTITY PRIMARY KEY
,[TO] NVARCHAR(255) NOT NULL
,[CC] NVARCHAR(255) NOT NULL
,[BCC] NVARCHAR(255) NOT NULL);
CREATE TABLE #Messages (
[subject] nvarchar(255) NOT NULL
,[to] nvarchar(255) NOT NULL
,[cc] nvarchar(255) NULL
,[bcc] nvarchar(255) NULL
,[MESSAGEID] INT NULL
,[sortKey] INT IDENTITY PRIMARY KEY
);
INSERT INTO #Messages
VALUES ('Subject1','to1','cc1','bcc1', NULL)
,('Subject2','to2', NULL, NULL, NULL);
SELECT * FROM #Messages;
DECLARE #outputSort TABLE (
[sortKey] INT NOT NULL
,[MESSAGEID] INT NOT NULL
,[subject] NVARCHAR(255)
);
MERGE INTO [MQ]
USING #Messages M
ON 1 = 0
WHEN NOT MATCHED
THEN
INSERT ([SUBJECT])
VALUES (M.[subject])
OUTPUT M.[SORTKEY]
,inserted.[MESSAGEID]
,inserted.[SUBJECT]
INTO #outputSort;
SELECT * FROM #outputSort;
SELECT * FROM [MQ];
UPDATE #Messages
SET MESSAGEID = O.[MESSAGEID]
FROM #outputSort O
WHERE #Messages.[sortKey] = O.[sortKey];
SELECT * FROM #Messages;
DROP TABLE #Messages;
As you said, FirstName and LastName are not unique. This means you cannot use a trigger because there can be the same FirstName + LastName so you cannot join on them.
But you can do the inverse thing: first update your temp table ExternalID (I suggest you to use sequence object and just do update #t set ExternalID = next value for dbo.seq1;) and then just insert your rows including ExternalID into myTable. To be able to insert into identity field you can use set identity_insert myTable on or you can re-design your destination table to contain no identity at all as now you use sequence for the same purpose.
We need a unique column for able to make the comparison at the update operation after the insert. That's why we are using ExternalID column temporarily. ExternalID updated by row_nubmber.
;WITH CTE AS
(
SELECT *, RN = ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) FROM #TempTable
)
UPDATE CTE SET ExternalID = RN
We are keeping the output of the insert operation in a temp table. The trick is order by with ExternalID, it will help us for making the unique row number for same first and last name
DECLARE #output TABLE (
ID INT,
FirstName VARCHAR(10),
LastName VARCHAR(10))
Insert into #myTable
OUTPUT inserted.ID, inserted.FirstName, inserted.LastName INTO #output(ID, FirstName, LastName)
select FirstName, LastName from #TempTable T
order by ExternalID
For replacing the ExternalID column with inserted id value, we are making comparing with first name, last name and row number.
;WITH TMP_T AS(
SELECT *, RN = ROW_NUMBER() OVER(PARTITION BY FirstName, LastName ORDER BY ExternalID) FROM #TempTable )
,OUT_T AS(
SELECT *, RN = ROW_NUMBER() OVER(PARTITION BY FirstName, LastName ORDER BY ID) FROM #output )
UPDATE TMP_T SET ExternalID = OUT_T.ID
FROM
TMP_T INNER JOIN OUT_T ON
TMP_T.FirstName = OUT_T.FirstName
AND TMP_T.LastName = OUT_T.LastName
AND TMP_T.RN = OUT_T.RN
Sample Data:
DECLARE #TempTable TABLE (
FirstName VARCHAR(10),
LastName VARCHAR(10),
DOB VARCHAR(10),
Sex VARCHAR (10),
Age VARCHAR(10),
ExternalID INT)
INSERT INTO #TempTable VALUES
('Serkan1', 'Arslan1', 'A','M','1',NULL),
('Serkan2', 'Arslan2', 'B','M','1',NULL),
('Serkan3', 'Arslan', 'C','M','1',NULL),
('Serkan3', 'Arslan', 'D','M','1',NULL)
DECLARE #myTable TABLE (
ID INT identity(100,1), -- started from 100 for see the difference
FirstName VARCHAR(10),
LastName VARCHAR(10))
Result:
MyTable
ID FirstName LastName
----------- ---------- ----------
100 Serkan1 Arslan1
101 Serkan2 Arslan2
102 Serkan3 Arslan
103 Serkan3 Arslan
TempTable
FirstName LastName DOB Sex Age ExternalID
---------- ---------- ---------- ---------- ---------- -----------
Serkan1 Arslan1 A M 1 100
Serkan2 Arslan2 B M 1 101
Serkan3 Arslan C M 1 102
Serkan3 Arslan D M 1 103
One way to do this is by duplicating the data into a second temp table like so:
SELECT *
INTO #TEMPTABLE
FROM (VALUES (1, 'Adam'), (2, 'Kate'), (3, 'Jess')) AS X (Id, Name)
SELECT TOP 0 CAST(NULL AS INT) AS IdentityValue, *
INTO #NEWTEMPTABLE
FROM #TEMPTABLE
CREATE TABLE #TABLEFORINSERT (
IdentityColumn INT IDENTITY(1,1),
Id INT,
Name VARCHAR(255)
)
INSERT INTO #TABLEFORINSERT (Id, Name)
OUTPUT INSERTED.IdentityColumn, INSERTED.Id, Inserted.Name INTO #NEWTEMPTABLE
SELECT Id, Name FROM #TEMPTABLE
--New temp table with identity values
SELECT * FROM #NEWTEMPTABLE
I have a table that has both Company name and Contacts for their respective companies. Type column has a 0 or 1 indicating whether it is a company or person. Each row has a column with a unique contact no. The 'person' row has a column called "Company no." that links the person to the company. I'm trying to return rows that show a company without any contacts in the same table. Not sure how to even start writing this query.
Try it like this:
DECLARE #tbl TABLE(ContactNo INT, Name VARCHAR(100), [Type] INT,CompanyNo INT);
INSERT INTO #tbl VALUES
(100,'ACME, Inc.',0,100)
,(200,'Bob Smith',1,100)
,(300,'John Doe',1,100)
,(400,'Widget World',0,400)
,(500,'Fishing, Inc.',0,500)
,(600,'Jane Doe',1,500);
WITH TheCompanies AS
(
SELECT *
FROM #tbl AS tbl
WHERE tbl.[Type]=0
)
SELECT *
FROM TheCompanies
WHERE NOT EXISTS(SELECT 1 FROM #tbl WHERE [Type]=1 AND CompanyNo=TheCompanies.CompanyNo);
I am planning to create a temporary table with an extra column(Id) that will generate a number sequentially when new data is added
Id LastName FirstNmae
... .......... ...........
1 A B
2 C D
The column Id should maintain order for the insert logic ie, Id should increment each time an insert occurs. I also need to retrieve data from the table according to the order of Id. How do I do that?
When creating the table set NUM as IDENTITY field
CREATE TABLE #Table
(
NUM int NOT NULL IDENTITY(1,1),
FirstName varchar(255),
LastName varchar(255)
)
Now insert leaving NUM column(it will automatically increment
INSERT INTO #Table VALUES('A','B')
INSERT INTO #Table VALUES('C','D')
What is the simplest way to insert a Car for each user in Users and set the users CarID to the ID of the inserted Car?
[Users]
- ID
- Name
- CarID
[Cars]
- ID (Auto increment)
- Name
Sorry if this might be a duplicate question but I can't find any simple solutions. Everything I've found is using complicated cursors, pointers etc.
A simple and reusable syntax for this would save me hours while migrating data during system upgrades etc.
If you are on SQL Server 2008 or later you can use merge and output something like this.
Sample tables and data:
declare #Users table
(
ID int identity primary key,
Name varchar(10) not null,
CarID int null
);
declare #Cars table
(
ID int identity primary key,
Name varchar(10) not null
);
insert into #Users(Name) values ('User1'),('User2'),('User3');
Add one care for each user and move the auto-generated CarID back to Users.
declare #ID table(CarID int, UserID int)
merge #Cars as C
using #Users as U
on 0 = 1
when not matched then
insert (Name) values ('CarName')
output inserted.ID, U.ID into #ID;
update U
set CarID = I.CarID
from #Users as U
inner join #ID as I
on U.ID = I.UserID
Try it out on SE Data.
More info on the merge/output trick can be found here.
I'm assuming the code you're using lets you call stored procedures?
create procedure dbo.CarUserInsert_sp
(
#p_UserID int,
#p_UserName varchar(100),
#p_CarID int,
#p_CarName varchar(100)
)
as
if not exists ( select 1 from Cars where ID = #p_CarID )
insert Cars values ( #p_CarID, #p_CarName )
if exists (select 1 from Users where ID = #p_UserID )
update Users set Name = #p_UserName, CarID = #p_CarID where ID = #p_UserID
else
insert Users values ( #p_UserID, #p_UserName, #p_CarID )
go
try this:
insert into cars (name)
select distinct(name) from users
update user
set carId = (select ID from cars where cars.name=user.Name)