EXEC and @@ROWCOUNT : rowcount « System Settings « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » System Settings » rowcount 
26. 27. 7. EXEC and @@ROWCOUNT
4>
5CREATE TABLE Customers (
6>      CustomerID nchar (5NOT NULL ,
7>      CompanyName nvarchar (40NOT NULL ,
8>      ContactName nvarchar (30NULL ,
9>      ContactTitle nvarchar (30NULL ,
10>     Address nvarchar (60NULL ,
11>     City nvarchar (15NULL ,
12>     Region nvarchar (15NULL ,
13>     PostalCode nvarchar (10NULL ,
14>     Country nvarchar (15NULL ,
15>     Phone nvarchar (24NULL ,
16>     Fax nvarchar (24NULL
17)
18> GO
1>
2INSERT Customers VALUES('1','A','Maria',    'Sales',  'Str. 57', 'Berlin'    ,NULL,'12209', 'Germany','111-1111111','111-1111111')
3INSERT Customers VALUES('2','M','Joe',      'Owner',  'Ave. 231','Vancouver' ,NULL,'05023', 'Mexico', '(222222-3332',NULL)
4INSERT Customers VALUES('3','H','Thomas',   'Sales',  'Sq.  111','London'    ,NULL,'1D00P', 'UK',     '(444444-4444','(444444-4444')
5INSERT Customers VALUES('4','B','Berg',     'Order',  'Blv    8','Toronto'   ,NULL,'00222', 'Sweden', '4444-55 55 65','5555-55 55 55')
6INSERT Customers VALUES('5','S','Moos',     'Sales',  'Fort  57','New York'  ,NULL,'68306', 'Germany','6666-66666','6666-77777')
7INSERT Customers VALUES('6','F','Cite',     'Manager','24      ','Dalles'    ,NULL,'67000', 'France', '88.60.15.31','88.60.15.32')
8INSERT Customers VALUES('7','C','Sommer',   'Owner',  'Araq, 67','Paris'     ,NULL,'28023', 'Spain',  '(91555 22 82','(91555 91 99')
9INSERT Customers VALUES('8','P','Leb',      'Owner',  '12      ','Beijing'   ,NULL,'13008', 'France', '91.24.45.40','91.24.45.41')
10INSERT Customers VALUES('9','D','Elizabeth','Manager','23 Blvd.','Tsawassen','BC', 'T2F8M4','Canada', '(604555-4729','(604555-3745')
11> go

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)

(rows affected)
1>
2>    EXEC('SELECT * FROM Customers')
3>    SELECT 'The Rowcount is ' + CAST(@@ROWCOUNT as varchar)
4> GO
CustomerID CompanyName                              ContactName                    ContactTitle                   Address                                                      City            Region
       PostalCode Country         Phone                    Fax
---------- ---------------------------------------- ------------------------------ ------------------------------ ------------------------------------------------------------ --------------- ---------
------ ---------- --------------- ------------------------ ------------------------
1          A                                        Maria                          Sales                          Str. 57                                                      Berlin          NULL
       12209      Germany         111-1111111              111-1111111
2          M                                        Joe                            Owner                          Ave. 231                                                     Vancouver       NULL
       05023      Mexico          (222222-3332           NULL
3          H                                        Thomas                         Sales                          Sq.  111                                                     London          NULL
       1D00P      UK              (444444-4444           (444444-4444
4          B                                        Berg                           Order                          Blv    8                                                     Toronto         NULL
       00222      Sweden          4444-55 55 65            5555-55 55 55
5          S                                        Moos                           Sales                          Fort  57                                                     New York        NULL
       68306      Germany         6666-66666               6666-77777
6          F                                        Cite                           Manager                        24                                                           Dalles          NULL
       67000      France          88.60.15.31              88.60.15.32
7          C                                        Sommer                         Owner                          Araq, 67                                                     Paris           NULL
       28023      Spain           (91555 22 82           (91555 91 99
8          P                                        Leb                            Owner                          12                                                           Beijing         NULL
       13008      France          91.24.45.40              91.24.45.41
9          D                                        Elizabeth                      Manager                        23 Blvd.                                                     Tsawassen       BC
       T2F8M4     Canada          (604555-4729           (604555-3745

(rows affected)

----------------------------------------------
The Rowcount is 9

(rows affected)
1>
2> drop table Customers;
3> GO
1>
26. 27. rowcount
26. 27. 1. Using the SET ROWCOUNT Option
26. 27. 2. Updating an end user's expiration date.
26. 27. 3. adds the account column to the authors table and creates the new bank and brokerage tables.
26. 27. 4. if @@ROWCOUNT = 0, return
26. 27. 5. if @@ROWCOUNT > 1, rollback
26. 27. 6. @@rowcount can be used to verify the success of selected operations
26. 27. 7. EXEC and @@ROWCOUNT
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