I want to INSERT my Values only if the 2 conditions are not correct.
Insert INTO ArtikelNr VALUE (…)
WHERE "3434" NOT IN (Select AriktelNr From Artikel) AND
isa_id = "3847"
What is wrong with this Code?
INSERT ... WHERE ... is not valid SQL.
WHERE only goes with SELECT.
If you want to validate both values for a single record:
if not exists (select 1 from Artikel where AriktelNr='3434' and isa_id='3847')
begin
insert into Artikel (<columns>) values (<values>)
end
If you want to validate both values on different records:
if not exists (select 1 from Artikel where AriktelNr='3434')
begin
if not exists (select 1 from Artikel where isa_id='3847')
begin
insert into Artikel (<columns>) values (<values>)
end
end
you can try and convert your "Values" part of the insert statement,
to an "Insert into Select" format, should work.
Sample:
drop table if exists test;
create table test (x int);
insert into test (x) values (1),(2),(3);
insert into test (x)
select 2
where 2 not in (select x from test)
;
Related
I have a query that inserts about 60.000 records in a table, using SQL Server.
The 100th INSERT INTO-statement is followed by a GO-command. In total the query contains about 600 GO-commands. Is that really necessary, or can I just have one GO-command at the end with that many INSERT's?
Sample:
(...)
insert into myTable(T_id,T_key,T_value) VALUES(97,97,97)
insert into myTable(T_id,T_key,T_value, T_comment) VALUES(98,98,98,'hello')
insert into myTable(T_id,T_key,T_value, T_range) VALUES(99,99,99,'1-100')
insert into myTable(T_id,T_key,T_value) VALUES(100,100,100)
go
insert into myTable(T_id,T_key,T_value) VALUES(101,101,102)
insert into myTable(T_id,T_key,T_value, T_comment) VALUES(102,102,102,'next')
(...)
insert into myTable(T_id,T_key,T_value) VALUES(60000,60000,60000)
go
insert into subTable(S_id, S_key, S_ref_T) VALUES(1,'s1',(Select top 1 T_ref from myTable where T_id = 34)
insert into subTable(S_id, S_key, S_ref_T) VALUES(23,'s23',(Select top 1 T_ref from myTable where T_id = 6001)
(...)
I am trying to insert data using select statement. The table which I am inserting is having foreign key and it is sequence ID. How do I accomplish this? Because if I insert the sequence key in associated table first then how do I get the list of all the sequence ID to insert into the table.
Please note I am using insert with select statement so is there way to accomplish this without using cursor?
I think you can extract sequence value and then re-use it as many times as you want:
DECLARE #NextValue INT
SELECT #NextValue = NEXT VALUE FOR MySequence
SELECT NextValue = #NextValue
INSERT INTO PrimaryTable(PK_ID) VALUES (#NextValue);
INSERT INTO SecondaryTable(FK_ID) VALUES (#NextValue);
Here what I have tried.
DECLARE #MyTabVaR TABLE
(
FOREIGNKEY_ID INT,
COMMON_COL INT
);
INSERT INTO #MyTabVaR
SELECT NEXT VALUE FOR DBO.MY_SEQ,COMMON_COL FROM another_table2
INSERT INTO actual_table
SELECT FOREIGNKEY_ID FROM #MyTabVaR
INSERT INTO another_table
SELECT * FROM copy_table C
LEFT JOIN actual_table A
ON C.COMMON_COL=A.COMMON_COL
WHERE A.FOREIGNKEY_ID IS NOT NULL
Can I use Merge to insert a record when it's doesn't exist like below,
MERGE INTO [dbo].[Test] AS [Target]
USING (SELECT DISTINCT [Name] FROM [dbo].[Test]) AS [Source]
ON [Target].[Name] = [Source].[Name]
WHEN NOT MATCHED THEN
INSERT ([Id], [Name])
VALUES (NEWID(), 'Hello');
If the record with value Hello does not exists in table Test, insert it otherwise don't do anything. With above code record is not inserted even I don't have this record in table. And there are no errors.
I know how to accomplish this using insert ... where not exists (...) but am specifically wanting to know how to do it using a merge statement.
The reason your merge statement wasn't working is that you were merging the same table, dbo.Test, back onto itself, so of course there is no missing record.
You can insert a single missing record as follows, where you create a source query to contain the record(s) you wish to insert:
declare #Test table (id uniqueidentifier, [Name] nvarchar(64))
select * from #Test
-- Returns
-- id | Name
-- ----------------------------------------------
MERGE INTO #Test AS [Target]
USING (select 'Hello' [Name]) AS [Source]
ON [Target].[Name] = [Source].[Name]
WHEN NOT MATCHED THEN
INSERT ([Id], [Name])
VALUES (NEWID(), [Name]);
select * from #Test
-- Returns
-- id | Name
-- ----------------------------------------------
-- C1C87CD5-F745-436D-BD8D-55B2AF431BED | Hello
I agree with the answer from Dale K. Its correct.
If I suppose you might have a source_table from where the data needs to get inserted and not to get inserted if the record already exists then you can do the following.
Instead of the MERGE you can
insert
into dbo.Test
(id
,name
)
select top 1
newID()
,'Hello'
from dbo.Test a
where not exists(select 1
from dbo.Test b
where b.name='Hello')
I want to insert to NewTable some id(found by calledMethod) from table 'inserted' when this id actually it's not in this table(NewTable)
Actually i'm using this method (calledMethod)twice. How to reduce this using for example alias?
CREATE TRIGGER TriggerName
ON Table
AFTER INSERT
AS
BEGIN
INSERT INTO NewTable
(
FirstId
SecondId
)
SELECT
I.ID
CalledMethod(I.Name)
FROM INSERTED I
WHERE CalledMethod(I.Name)
NOT IN (SELECT SecondId FROM NewTable)
END
GO
The second problem occures when I want insert two rows at the same time.
Insert Into Table
(
Name
)
Values
('ro'),('ro-RO')
In this situation, the method returns the same index and both will be added. How to resolve this problem.
In this situation, the method returns the same index
This is example of calledMethod
CREATE FUNCTION CalledMethod
(
#internalName nvarchar(50)
)
RETURNS int
AS
BEGIN
return case
when #internalName Like 'ro%' then 6
when #internalName Like 'sk%' then 7
when #internalName Like 'bg%' then 9
end
END
I believe this is what you need:
CREATE TRIGGER TriggerName
ON Table
AFTER INSERT
AS
BEGIN
INSERT INTO NewTable
(
FirstId
SecondId
)
SELECT
min(I.ID),
x.called
FROM INSERTED I
CROSS APPLY
(SELECT CalledMethod(I.Name) called) x
WHERE
x.called NOT IN (SELECT SecondId FROM NewTable)
GROUP BY x.called
END
I am trying to insert into 3 tables from one single select statement. Here is what I am trying to do:
insert into dbo.temp1 (name, location, city)
select name, location, city from mytable.
I want to be able to insert into 3 tables once I run the select statement like inserting into temp1, temp2 and temp3.
How can I do this? Thanks.
You can do it maximum for 2 tables with using output:
insert into dbo.temp1 (name, location, city)
output inserted.name, inserted.location, inserted.city into temp2
select name, location, city from mytable
You can't do this in one step*
What you can do is to insert the initial query into a #temp table (or a #table variable) as a staging area, and then insert into the tables from there. Wrap the steps in a transaction to retain ACID:
BEGIN TRAN
select name, location, city
into #TEMP
from mytable;
insert into temp1(name, location, city)
select name, location, city
from #TEMP;
-- Same for temp2 and temp3.
COMMIT TRAN
* Excluding hacks such as a view with an Instead-of Trigger.
The staging table is important from a concurrency point of view, as repeating the original query 3 times may result in different results if there are interim concurrent changes to the source table.
You can.
With a trick.
Create a view, then create an 'instead of' trigger for insert on that view where you insert the stuff into your tables. If you now insert into your view, you finally insert data in 3 tables. Here's a demo
-- 1. create 3 test tables
create table t1( id int, f1 varchar(20))
create table t2( id int, f2 varchar(20))
create table t3( id int, f3 varchar(20))
go
-- 2. create the view
create view Tt as
select t1.ID, t1.f1, t2.f2,t3.f3
from t1
join t2 on t1.ID=t2.ID
join t3 on t1.ID=t3.id
go
-- 3. create the trigger
create trigger Tr_Test on Tt INSTEAD OF INSERT
AS
BEGIN
SET NOCOUNT ON;
insert into t1 select id,f1 from inserted
insert into t2 select id,f2 from inserted
insert into t3 select id,f3 from inserted
END
GO
-- 4. now do your insert with a single select
insert into tt
select 1,'A','B','C'
-- 5. and watch the 3 tables
select * from t1
select * from t2
select * from t3
voilá, one insert, 3 tables got modified. Wwe don't count the hidden trigger, do we ;-)
There is no way to insert into X tables with one query (Ok it its with insert and output to table).
So you have to write 3 queries.
Or you can generate SQL statments with dynamic queries.
I don't believe you can insert into multiple tables in one statement. You can definitely do it in one transaction, however.
BEGIN TRANSACTION
INSERT INTO dbo.temp1 (name, location, city)
SELECT name, location, city
FROM myTable
INSERT INTO dbo.temp2 (name, location, city)
SELECT name, location, city
FROM myTable2
COMMIT TRANSACTION
You can insert into multiple tables with one select statement using a TRIGGER.
CREATE TRIGGER TEMP2_TEMP3_INSERT ON TEMP1
AFTER INSERT AS
BEGIN
/* create your insert statements for TEMP2 and TEMP3 here
referencing the data from the first insert */
END;
GO
MySQL doesn't support multi-table insertion in a single INSERT statement. Oracle is the only one I'm aware of that does, oddly...
However, you CAN use a transaction and have both of them be contained within one transaction.
MySQL:
START TRANSACTION;
INSERT INTO table1 VALUES ('1','2','3');
INSERT INTO table2 VALUES ('1','2','3');
COMMIT;
SQL Server:
BEGIN TRAN;
INSERT INTO table1 VALUES ('1','2','3');
INSERT INTO table2 VALUES ('1','2','3');
COMMIT;
SQL Server with error catching/rollback:
BEGIN TRANSACTION [Tran1]
BEGIN TRY
INSERT INTO table1 VALUES ('1','2','3')
INSERT INTO table2 VALUES ('1','2','3')
COMMIT TRANSACTION [Tran1]
END TRY
BEGIN CATCH
ROLLBACK TRANSACTION [Tran1]
END CATCH
GO