SQL Server/T-SQL/Date Timezone/Year

Материал из SQL эксперт
Версия от 10:21, 26 мая 2010; Admin (обсуждение | вклад) (1 версия)
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select YEAR("2002-09-30")

 

3>
4> select YEAR("2002-09-30")
5> GO
-----------
       2002
(1 rows affected)



The DAY(), MONTH(), and YEAR() Functions

1>
2> -- The DAY(), MONTH(), and YEAR() Functions
3>
4> -- These three functions return an integer date part of a DateTime or SmallDateTime --
5> -- type value.
6>
7>
8> SELECT "Year: " + CONVERT(VarChar(4), YEAR(GETDATE()))
9>    + ", Month: " + CONVERT(VarChar(2), MONTH(GETDATE()))
10>    + ", Day: " + CONVERT(VarChar(2), DAY(GETDATE()))
11>
12> GO
------------------------------
Year: 2006, Month: 10, Day: 12
(1 rows affected)
1>



Using Functions in Queries

1> create table employee(
2>     ID          int,
3>     name        nvarchar (10),
4>     salary      int,
5>     start_date  datetime,
6>     city        nvarchar (10),
7>     region      char (1))
8> GO
1>
2> insert into employee (ID, name,    salary, start_date, city,       region)
3>               values (1,  "Jason", 40420,  "02/01/94", "New York", "W")
4> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region)
2>               values (2,  "Robert",14420,  "01/02/95", "Vancouver","N")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region)
2>               values (3,  "Celia", 24020,  "12/03/96", "Toronto",  "W")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region)
2>               values (4,  "Linda", 40620,  "11/04/97", "New York", "N")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region)
2>               values (5,  "David", 80026,  "10/05/98", "Vancouver","W")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region)
2>               values (6,  "James", 70060,  "09/06/99", "Toronto",  "N")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region)
2>               values (7,  "Alison",90620,  "08/07/00", "New York", "W")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region)
2>               values (8,  "Chris", 26020,  "07/08/01", "Vancouver","N")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region)
2>               values (9,  "Mary",  60020,  "06/09/02", "Toronto",  "W")
3> GO
(1 rows affected)
1>
2> select * from employee
3> GO
ID          name       salary      start_date              city       region
----------- ---------- ----------- ----------------------- ---------- ------
          1 Jason            40420 1994-02-01 00:00:00.000 New York   W
          2 Robert           14420 1995-01-02 00:00:00.000 Vancouver  N
          3 Celia            24020 1996-12-03 00:00:00.000 Toronto    W
          4 Linda            40620 1997-11-04 00:00:00.000 New York   N
          5 David            80026 1998-10-05 00:00:00.000 Vancouver  W
          6 James            70060 1999-09-06 00:00:00.000 Toronto    N
          7 Alison           90620 2000-08-07 00:00:00.000 New York   W
          8 Chris            26020 2001-07-08 00:00:00.000 Vancouver  N
          9 Mary             60020 2002-06-09 00:00:00.000 Toronto    W
(9 rows affected)
1>
2>
3> --Using Functions in Queries
4>
5> SELECT Name, YEAR(Start_Date) AS Start_Year
6> FROM Employee
7> GO
Name       Start_Year
---------- -----------
Jason             1994
Robert            1995
Celia             1996
Linda             1997
David             1998
James             1999
Alison            2000
Chris             2001
Mary              2002
(9 rows affected)
1>
2>
3>
4>
5> drop table employee
6> GO
1>



YEAR: return the year portion of a date

1> ---------------------------------------------------
2> -- YEAR: return the year portion of a date.
3>
4> SELECT YEAR("24 March 1964")
5> GO
-----------
       1964
(1 rows affected)
1>