Get current IDENTITY value : IDENTITY « Sequence « SQL Server / T-SQL

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SQL Server / T-SQL » Sequence » IDENTITY 
Get current IDENTITY value


17>
18> -- Save the original @@IDENTITY value
19>
20CREATE TABLE TestIdent
21(
22>    IDCol int IDENTITY PRIMARY KEY
23)
24> GO
Msg 2714, Level 16, State 6, Server JAVA2S\SQLEXPRESS, Line 20
There is already an object named 'TestIdent' in the database.
1CREATE TABLE TestChild1 (
2>    IDcol int PRIMARY KEY FOREIGN KEY REFERENCES TestIdent(IDCol)
3)
4> GO
1CREATE TABLE TestChild2 (
2>    IDcol int PRIMARY KEY FOREIGN KEY REFERENCES TestIdent(IDCol)
3)
4> GO
1> DECLARE @Ident int
2>
3INSERT INTO TestIdent DEFAULT VALUES
4>
5> SET @Ident = @@IDENTITY
6> PRINT 'The value we got originally from @@IDENTITY was ' + CONVERT(varchar(2),@Ident)
7> PRINT 'The value currently in @@IDENTITY is ' + CONVERT(varchar(2),@@IDENTITY)
8>
9INSERT INTO TestChild1 VALUES (@@IDENTITY)
10>
11> PRINT 'The value we got originally from @@IDENTITY was ' + CONVERT(varchar(2),@Ident)
12>
13> IF (SELECT @@IDENTITYIS NULL
14>    PRINT 'The value currently in @@IDENTITY is NULL'
15> ELSE
16>    PRINT 'The value currently in @@IDENTITY is ' + CONVERT(varchar(2),@@IDENTITY)
17>
18> PRINT ''
19>
20INSERT INTO TestChild2 VALUES (@Ident)
21> GO

(rows affected)

(rows affected)
The value we got originally from @@IDENTITY was 2

(rows affected)
The value currently in @@IDENTITY is 2

(rows affected)

(rows affected)
The value we got originally from @@IDENTITY was 2

(rows affected)
The value currently in @@IDENTITY is NULL

(rows affected)


(rows affected)
1>
2select from testchild1
3> go
IDcol
-----------
          2

(rows affected)
1>
2select from testchild2
3> GO
IDcol
-----------
          2

(rows affected)
1>
2> drop table TestChild2;
3> drop table TestChild1;
4> GO
1>
2>
           
       
Related examples in the same category
1. IDENTITY (1, 1)
2. Identity starting with -1000000
3. SQL Server chooses the highest number as its current seed for a positive increment value or the lowest for a negative increment value
4. SQL Server does not allow explicit values to be inserted into it
5. Now you explicitly enter a value for Identity column
6. Using Identity during data insert
7. Using IDENTITY value
8. Seed value was negative and the increment was positive
9. Created with an IDENTITY property that is set to start at 1,000,000 and decrement by 100 for every row added
10. IDENTITY [ (seed , increment ) ]
11. IDENTITY as PRIMARY KEY
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