insert into Attributes (Id, Disabled, AttributeValue)
values (#id, #disabled, #attr_value)
if not exists
(
select * from Attributes
where
Id = #id
)
Not sure, if this is a valid query.
I have seen people use where not exists. What is the difference and how to use where not exists? When I put where not exists, it is saying "Incorrect syntax near where."
I checked these question as well. But, it doesn't seem to have query to insert using if not exists.
Only inserting a row if it's not already there and
sql conditional insert if row doesn't already exist
Am I missing something? Should I only use where not exists?
Change it to INSERT INTO SELECT
INSERT INTO Attributes (Id, Disabled, AttributeValue)
SELECT #id, #disabled, #attr_value
WHERE NOT EXISTS
(
select * from Attributes
where
Id = #id
)
You would need to execute something like this
IF NOT EXISTS (select 1 from Attributes where Id = #id)
BEGIN
insert into Attributes (Id, Disabled, AttributeValue)
values (#id, #disabled, #attr_value)
END
This is typically done with an else clause to update the row if it exists.
Consider using MERGE:
MERGE INTO Attributes
USING ( values (#id, #disabled, #attr_value ) )
AS source ( Id, Disabled, AttributeValue )
ON source.Id = Attributes.Id
WHEN NOT MATCHED THEN
INSERT ( Id, Disabled, AttributeValue )
VALUES ( Id, Disabled, AttributeValue );
One advantage is that you can also update the values when the Id does exist e.g.
MERGE INTO Attributes
USING ( values (#id, #disabled, #attr_value ) )
AS source ( Id, Disabled, AttributeValue )
ON source.Id = Attributes.Id
WHEN MATCHED THEN
UPDATE
SET Id = source.Id,
Disabled = source.Disabled,
AttributeValue = source.AttributeValue
WHEN NOT MATCHED THEN
INSERT ( Id, Disabled, AttributeValue )
VALUES ( Id, Disabled, AttributeValue );
Related
I am trying to read data from 2 tables and inserting to similar tables in a different database.
Here is my query
BEGIN TRANSACTION
Delete from aspnet_Website.[dbo].[Places]
DECLARE #AutoID int;
insert into aspnet_Website.[dbo].[Places] (ReferenceID, Name, OtherKnownNames, Description, Email)
select ReferenceID, Name, OtherKnownNames, Description, Email from DB_A290D0_places.
[dbo].[places]
where PublishingStatus=0
SELECT #AutoID = scope_identity();
insert into aspnet_Website.[dbo].[Schedules] (Timing, Type, PlaceID)
select [Timing], [Type], #AutoID from DB_A290D0_places.[dbo].[Schedules]
COMMIT
I am getting error
Incorrect syntax near '#AutoID'.
and even I am not sure that it will work or not.
'Places' table has ID field which is auto id and it is used as FK in Schedule table, so for every 'place' row I need to get auto id and insert it into the schedule table along with the corresponding table data from another database.
Update1 : I have fixed the syntax error, I can see records added into the table but last generated AutoID is being used for all rows in child table. I want to use autoid generated for each row.
Update2 : following script worked
BEGIN TRANSACTION
Delete from aspnet_Website.[dbo].[Places]
declare #NewId table (ID int);
insert into aspnet_Website.[dbo].[Places] (ReferenceID, Name, OtherKnownNames, Description, Email)
select ReferenceID, Name, OtherKnownNames, Description, Email from DB_A290D0_places.
[dbo].[places]
where PublishingStatus=0
output Inserted.ID into #NewId (ID)
insert into aspnet_Website.[dbo].[Schedules] (Timing, [Type], PlaceID)
select [Timing], [Type], P.ID
from DB_A290D0_places.[dbo].[Schedules] S
inner join #NewId P on P.ID = S.PlaceId;
COMMIT
You can't store more than one value in a variable, the the line SELECT #AutoID = scope_identity(); will only capture the last id inserted.
To solve you problem have you considered not changing the ids by setting IDENTITY_INSERT ON and inserting the original ids?
Otherwise use the OUTPUT clause to capture the new ids, map them to the old ids, and then insert them into the Schedules table.
begin transaction
delete from aspnet_Website.[dbo].[Places];
declare #AutoID int;
declare #NewId table (ID int, OldID int);
-- In an insert statement you can't access the source table in the output clause unfortunately
/*
insert into aspnet_Website.[dbo].[Places] (ReferenceID, [Name], OtherKnownNames, [Description], Email)
output Inserted.ID, P.ID into #NewId (ID, OldID)
select ReferenceID, [Name], OtherKnownNames, [Description], Email
from DB_A290D0_places.[dbo].[places] P
where PublishingStatus = 0;
*/
-- However in a merge statement you can access both the source and destination tables in the output clause.
merge into aspnet_Website.[dbo].[Places] T
using DB_A290D0_places.[dbo].[places] S on 1 = 0 -- always false
when not matched by target and S.PublishingStatus = 0 then -- happens for every row, because 1 is never 0
insert (ReferenceID, [Name], OtherKnownNames, [Description], Email)
values (S.ReferenceID, S.[Name], S.OtherKnownNames, S.[Description], S.Email)
output Inserted.ID, S.ID into into #NewId (ID, OldID);
insert into aspnet_Website.[dbo].[Schedules] (Timing, [Type], PlaceID)
select [Timing], [Type], P.ID
from DB_A290D0_places.[dbo].[Schedules] S
inner join #NewId P on P.OldId = S.PlaceId;
commit
I could be down the wrong path with this. However, here goes. I am trying to take multiple excel sheets and load them into SQL Server using SSIS.
Excel sheet:
RQ|Descr|PartNum|Manufacturer|...
I am loading this into a staging table with a couple of derived columns:
RQ|Descr|PartNum|Manufacturer|Origin|DateTime|...
This is no big deal, I am able to do this easily. However, the problem is how to get the data from the staging table to the correct table and ensuring FK constraints are followed. See below for an illustration.
My goal is to take RQ|Descr|PartNum|Manufacturer|Origin|DateTime|...
and populate multiple tables
[t1] id|RQ|Descr|Origin|DateTime
[t2] id|t1_id|PartNum|Manufacturer
[t3] id|t1_id|...
I have tried MERGE however I am unsure how to keep the FK relationship.
MERGE INTO spin_item AS targ
USING ssis_stage AS src ON 1=0 -- always generates "not matched by target"
WHEN NOT MATCHED BY TARGET THEN
-- INSERT into spin_item:
INSERT (description, reqqty, price, origin, datetime, exclude, status, siteid, production, repairable)
VALUES (src.description, src.rq, src.price, src.origin, GETDATE(), 0, 'N', '', 0, 0)
-- INSERT into spin_part:
OUTPUT inserted.ID, src.manufacturer, src.partnum
INTO spin_part (ID, src.manufacturer, src.partnum);
I have looked into this SSIS : Using multicast to enter data into 2 RELATED destinations but this is for a one-to-many relationship. So, I am not sure how to populate my t1 table and use the id to populate t2, t3 from the staging table.
EDIT: Below, seems to be a working solution. However, I am not sure that it is a good solution.
BEGIN
SET IDENTITY_INSERT dbo.spin_item ON
--Insert into spin_item
MERGE INTO spin_item AS targ
USING ssis_stage AS src ON 1=0
WHEN NOT MATCHED BY TARGET THEN
INSERT (id, description, reqqty, price, origin, datetime, exclude, status, siteid, production, repairable)
VALUES (src.id, src.description, src.rq, src.price, src.origin, GETDATE(), 0, 'N', '', 0, 0);
SET IDENTITY_INSERT dbo.spin_item OFF
--Insert into spin_part
MERGE INTO spin_part AS targ
USING ssis_stage AS src ON 1=0
WHEN NOT MATCHED BY TARGET AND src.partnum IS NOT NULL THEN
INSERT (itemid_id, manufacturer, partnum, catalognum, [primary])
VALUES (src.id, src.manufacturer, src.partnum, src.partnum, 1);
--Insert into spin_stock
MERGE INTO spin_stock AS targ
USING ssis_stage AS src ON 1=0
WHEN NOT MATCHED BY TARGET AND src.stock IS NOT NULL THEN
INSERT (itemid_id, stocknum)
VALUES (src.id, src.stock);
--Insert into spin_collaboration
MERGE INTO spin_collaboration AS targ
USING ssis_stage AS src ON 1=0
WHEN NOT MATCHED BY TARGET AND src.notes IS NOT NULL THEN
INSERT (itemid_id, comment, datetime)
VALUES (src.id, src.notes, GETDATE());
DELETE FROM ssis_stage WHERE id > 0 --Instead of Truncate since auto_increment will reset.
END
You can create an ID column on your staging table, based off your target tables that is then used as the FK in each table insert:
declare #source table (ID int, a int, b int, c int);
insert into #source values
(null,1,1,1)
,(null,1,1,2)
,(null,1,2,2)
,(null,5,3,2)
,(null,7,1,2)
,(null,2,1,2)
declare #target1 table (ID int, a int);
insert into #target1 values
(1,5)
,(2,6)
,(3,99);
declare #target2 table (ID int, b int, c int);
insert into #target2 values
(1,3,2)
,(2,9,7)
,(3,57,3);
update s
set ID = ss.IDNew
from #source s
inner join (
select row_number() over (order by a,b,c) + (select max(ID) from #target1) as IDNew
,a
,b
,c
from #source
) ss
on(s.a = ss.a
and s.b = ss.b
and s.c = ss.c
);
select * from #target1;
select * from #source;
insert into #target1
select ID
,a
from #source;
insert into #target2
select ID
,b
,c
from #source;
select * from #target1;
select * from #target2;
I try to insert data from table in another. I want to check all rows, if row exists, just update, if row does not exist, insert it (based on ID).
I have this insert statement:
insert into d1.dbo.UrlRecord (EntityId, EntityName, Slug, IsActive, LanguageId)
select
Id, 'Category',
REPLACE(Name, ' ', '-'), 1, 0
from d2.dbo.Category
if Id exist just update with new value else insert
I want to make it run dynamically using job in SQL Server
Try the following MERGE script
MERGE d1.dbo.UrlRecord TT
USING
(
SELECT
Id,'Category' as EntityName,REPLACE(Name,' ','-') as Slug,1 as IsActive,0 as LanguageID
FROM d2.dbo.Category
)ST on TT.EntityId = ST.id
WHEN NOT MATCHED THEN
INSERT ( EntityId,EntityName,Slug,IsActive,LanguageId)
VALUES (ST.Id,ST.EntityName,ST.Slug, ST.IsActive,ST.LanguageID)
WHEN MATCHED THEN
UPDATE
SET
TT.EntityName = ST.EntityName,
TT.Slug = ST.Slug,
TT.IsActive = ST.IsActive,
TT.LanguageId=ST.LanguageID
;
I have a sql table that has two columns id and name. I have list of names about 20 and I need to write a query that checks if name exists before insert.
Is there a better way of doing this rather then just having the below query 20 times but with different names (I need do this in t-sql):
IF NOT EXISTS(SELECT*
FROM mytable
WHERE name = 'Dan')
BEGIN
INSERT INTO mytable
(name)
VALUES ('dan')
END
INSERT INTO MyTable (Name)
SELECT NewNames.Name
FROM ( VALUES ('Name1'), ('Name2'), ('Name3') ) AS NewNames (Name)
WHERE NOT EXISTS ( SELECT 1
FROM MyTable AS MT
WHERE MT.Name = NewNames.Name );
I think you could use a merge statement:
MERGE INTO myTable AS Target
USING (VALUES ('name1'),('name2'),('...')) AS source (NAME)
ON Target.NAME = Source.NAME
WHEN NOT MATCHED BY TARGET THEN
INSERT (NAME) VALUES (name)
You can filter values with NOT EXISTS
INSERT INTO myTable (
Name
)
SELECT DISTINCT
Name
FROM (
VALUES ('Name 1'),
('Name 2')
) AS NewNames(Name)
WHERE
NOT EXISTS (SELECT 1 FROM TargetTable WHERE myTable.Name = NewNames.Name)
If your new names are in another table, you can change the select query in the above one.
Please note, that the DISTINCT keyword is necessary to filter out the duplications in the source data.
I would do this using insert:
with names as (
select 'Dan' as name union all
select 'name2' union all
. . .
)
insert into myTable(name)
select distinct name
from myTable
where not exists (select 1 from mytable t2 where t2.name = t.name);
Note: you may want to create a unique index on mytable(name) so the database does the checking for duplicates.
untested so there might be some minor errors:
merge into mytable x
using (
values ('name1')
, ('name2')
, ...
, ('namen')
) as y (name)
on x.name = y.name
when not matched then
insert (name)
values (y.name)
INSERT INTO MyTable (Name)
SELECT Name FROM
(
VALUES ('Name 1'),
('Name 2')
) AS Names(Name)
WHERE Name NOT IN
(
SELECT Name FROM MyTable
)
INSERT IGNORE INTO myTable (column1, column2) VALUES (val1, val2),(val3,val4),(val5,val6);
INSERT IGNORE will allow skip on duplicate values
In the following one to many
CREATE TABLE source(id int, name varchar(10), PRIMARY KEY(id));
CREATE TABLE params(id int, source int, value int);
where params.source is a foreign key to source.id
INSERT INTO source values(1, 'yes');
INSERT INTO source values(2, 'no');
INSERT INTO params VALUES(1,1,1);
INSERT INTO params VALUES(2,1,2);
INSERT INTO params VALUES(3,1,3);
INSERT INTO params VALUES(4,2,1);
INSERT INTO params VALUES(5,2,3);
INSERT INTO params VALUES(6,2,4);
If i have a list of param values (say [1,2,3]), how do I find all the sources that have ALL of the values in the list (source 1, "yes") in SQL?
Thanks
SELECT s.*
FROM source AS s
JOIN params AS p ON (p.source = s.id)
WHERE p.value IN (1,2,3)
GROUP BY s.id
HAVING COUNT(DISTINCT p.value) = 3;
You need the DISTINCT because your params.value is not prevented from having duplicates.
Edit Modified to handle case where there can be multiple occurances of the value for a given source.
Try this:
SELECT
*
FROM
source
WHERE
(
SELECT COUNT(DISTINCT value)
FROM params
WHERE params.source = source.id
AND params.value IN (1, 2, 3)
) = 3
You can rewrite it to a GROUP BY as well:
SELECT
source.*
FROM
source
INNER JOIN params ON params.source = source.id
WHERE
params.value IN (1, 2, 3)
GROUP BY
source.id,
source.name
HAVING
COUNT(DISTINCT params.value) = 3