SQL Server/T-SQL/System/ROWCOUNT — различия между версиями

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м (1 версия)
 
(нет различий)

Текущая версия на 10:20, 26 мая 2010

SELECT @@ROWCOUNT

 

3> CREATE TABLE publishers(
4>    pub_id         char(4)           NOT NULL,
5>    pub_name       varchar(40)           NULL,
6>    city           varchar(20)           NULL,
7>    state          char(2)               NULL,
8>    country        varchar(30)           NULL DEFAULT("USA")
9> )
10> GO
1>
2>
3> insert publishers values("1", "Publisher A", "Vancouver",  "MA", "USA")
4> insert publishers values("2", "Publisher B", "Washington", "DC", "USA")
5> insert publishers values("3", "Publisher C", "Berkeley",   "CA", "USA")
6> insert publishers values("4", "Publisher D", "New York",   "NY", "USA")
7> insert publishers values("5", "Publisher E", "Chicago",    "IL", "USA")
8> insert publishers values("6", "Publisher F", "Dallas",     "TX", "USA")
9> insert publishers values("7", "Publisher G", "Vancouver",  "BC", "Canada")
10> insert publishers values("8", "Publisher H", "Paris",      NULL, "France")
11> GO
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
1>
2>
3> SELECT * FROM publishers
4> SELECT @@ROWCOUNT
5> SELECT @@ROWCOUNT
6> GO
pub_id pub_name                                 city                 state country
------ ---------------------------------------- -------------------- ----- ------------------------------
1      Publisher A                              Vancouver            MA    USA
2      Publisher B                              Washington           DC    USA
3      Publisher C                              Berkeley             CA    USA
4      Publisher D                              New York             NY    USA
5      Publisher E                              Chicago              IL    USA
6      Publisher F                              Dallas               TX    USA
7      Publisher G                              Vancouver            BC    Canada
8      Publisher H                              Paris                NULL  France
(8 rows affected)
-----------
          8
(1 rows affected)
-----------
          1
(1 rows affected)
1>
2> drop table publishers;
3> GO