SQL Server/T-SQL/Sequence/IDENT CURRENT
Версия от 13:46, 26 мая 2010; (обсуждение)
Retrieving the IDENT_CURRENT() Value
IDENT_CURRENT() returns the last IDENTITY value inserted into a given table, from any session or scope.
7> CREATE TABLE MyTable (
8> key_col int NOT NULL IDENTITY (1,1),
9> abc char(1) NOT NULL
10> )
11> INSERT INTO MyTable VALUES ("a")
12> INSERT INTO MyTable VALUES ("b")
13> INSERT INTO MyTable VALUES ("c")
14> SELECT * FROM MyTable ORDER BY key_col
15>
16> SELECT
17> IDENT_CURRENT ("MyTable")
18>
19> drop table MyTable
20> GO
(1 rows affected)
(1 rows affected)
(1 rows affected)
key_col abc
----------- ---
1 a
2 b
3 c
(3 rows affected)
----------------------------------------
3
(1 rows affected)
1>
Returning the Last Identity Value
3>
4> SELECT IDENT_CURRENT("YourTableName") LastIdententityValue
5> GO
LastIdententityValue
----------------------------------------
NULL
(1 rows affected)
1>