SQL Server/T-SQL Tutorial/Query/IS NOT NULL — различия между версиями

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Текущая версия на 10:23, 26 мая 2010

A SELECT statement that retrieves rows without null values

4>
5> create table Billings (
6>     BankerID           INTEGER,
7>     BillingNumber      INTEGER,
8>     BillingDate        datetime,
9>     BillingTotal       INTEGER,
10>     TermsID            INTEGER,
11>     BillingDueDate     datetime ,
12>     PaymentTotal       INTEGER,
13>     CreditTotal        INTEGER
14>
15> );
16> GO
1>
2> INSERT INTO Billings VALUES (1, 1, "2005-01-22", 165, 1,"2005-04-22",123,321);
3> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (2, 2, "2001-02-21", 165, 1,"2002-02-22",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (3, 3, "2003-05-02", 165, 1,"2005-04-12",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (4, 4, "1999-03-12", 165, 1,"2005-04-18",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (5, 5, "2000-04-23", 165, 1,"2005-04-17",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (6, 6, "2001-06-14", 165, 1,"2005-04-18",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (7, 7, "2002-07-15", 165, 1,"2005-04-19",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (8, 8, "2003-08-16", 165, 1,"2005-04-20",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (9, 9, "2004-09-17", 165, 1,"2005-04-21",123,321);
2> GO
(1 rows affected)
1> INSERT INTO Billings VALUES (0, 0, "2005-10-18", 165, 1,"2005-04-22",123,321);
2> GO
(1 rows affected)
1>
2>
3> SELECT *
4> FROM Billings
5> WHERE BillingTotal IS NOT NULL
6> GO
BankerID    BillingNumber BillingDate             BillingTotal TermsID     BillingDueDate          PaymentTotal CreditTotal
----------- ------------- ----------------------- ------------ ----------- ----------------------- ------------ -----------
          1             1 2005-01-22 00:00:00.000          165           1 2005-04-22 00:00:00.000          123         321
          2             2 2001-02-21 00:00:00.000          165           1 2002-02-22 00:00:00.000          123         321
          3             3 2003-05-02 00:00:00.000          165           1 2005-04-12 00:00:00.000          123         321
          4             4 1999-03-12 00:00:00.000          165           1 2005-04-18 00:00:00.000          123         321
          5             5 2000-04-23 00:00:00.000          165           1 2005-04-17 00:00:00.000          123         321
          6             6 2001-06-14 00:00:00.000          165           1 2005-04-18 00:00:00.000          123         321
          7             7 2002-07-15 00:00:00.000          165           1 2005-04-19 00:00:00.000          123         321
          8             8 2003-08-16 00:00:00.000          165           1 2005-04-20 00:00:00.000          123         321
          9             9 2004-09-17 00:00:00.000          165           1 2005-04-21 00:00:00.000          123         321
          0             0 2005-10-18 00:00:00.000          165           1 2005-04-22 00:00:00.000          123         321
(10 rows affected)
1>
2> drop table Billings;
3> GO
1>