SQL Server/T-SQL Tutorial/String Functions/RTRIM
Содержание
CONVERT(varchar(20), RTRIM(au_lname) + ", " + RTRIM(au_fname)
5> CREATE TABLE authors(
6> au_id varchar(11),
7> au_lname varchar(40) NOT NULL,
8> au_fname varchar(20) NOT NULL,
9> phone char(12) NOT NULL DEFAULT ("UNKNOWN"),
10> address varchar(40) NULL,
11> city varchar(20) NULL,
12> state char(2) NULL,
13> zip char(5) NULL,
14> contract bit NOT NULL
15> )
16> GO
1> insert authors values("1", "Joe", "Abra", "111 111-1111", "6 St.", "Berkeley", "CA", "11111", 1)
2> insert authors values("2", "Jack", "Majo", "222 222-2222", "3 St.", "Oakland" , "CA", "22222", 1)
3> insert authors values("3", "Pink", "Cherry", "333 333-3333", "5 Ln.", "Vancouver", "BC", "33333", 1)
4> insert authors values("4", "Blue", "Albert", "444 444-4444", "7 Av.", "Vancouver", "BC", "44444", 1)
5> insert authors values("5", "Red", "Anne", "555 555-5555", "6 Av.", "Regina", "SK", "55555", 1)
6> insert authors values("6", "Black", "Michel", "666 666-6666", "3 Pl.", "Regina", "SK", "66666", 1)
7> insert authors values("7", "White", "Sylvia", "777 777-7777", "1 Pl.", "Rockville", "MD", "77777", 1)
8> insert authors values("8", "Yellow","Heather","888 888-8888", "3 Pu", "Vacaville", "CA", "88888", 0)
9> insert authors values("9", "Gold", "Dep", "999 999-9999", "5 Av.", "Oakland", "CA", "99999", 0)
10> insert authors values("10", "Siler", "Dean", "000 000-0000", "4 Av.", "Oakland", "CA", "00000", 1)
11> GO
(1 rows affected)
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1>
2>
3> CREATE TABLE titleauthor(
4> au_id varchar(20),
5> title_id varchar(20),
6> au_ord tinyint NULL,
7> royaltyper int NULL
8> )
9> GO
1>
2> insert titleauthor values("1", "2", 1, 60)
3> insert titleauthor values("2", "3", 1, 100)
4> insert titleauthor values("3", "4", 1, 100)
5> insert titleauthor values("4", "5", 1, 100)
6> insert titleauthor values("5", "6", 1, 100)
7> insert titleauthor values("6", "7", 2, 40)
8> insert titleauthor values("7", "8", 1, 100)
9> insert titleauthor values("8", "9", 1, 100)
10> GO
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1>
2>
3>
4> SELECT "Author ID"=A.au_id,
5> "Author"=CONVERT(varchar(20), RTRIM(au_lname) + ", "
6> + RTRIM(au_fname)), state
7> FROM authors A
8> WHERE A.au_id <> ALL
9> (SELECT B.au_id FROM titleauthor B)
10> GO
Author ID Author state
----------- -------------------- -----
9 Gold, Dep CA
10 Siler, Dean CA
(2 rows affected)
1>
2>
3> SELECT "Author ID"=A.au_id,
4> "Author"=CONVERT(varchar(20), RTRIM(au_lname) + ", "
5> + RTRIM(au_fname)), state
6> FROM authors A
7> WHERE A.au_id NOT IN
8> (SELECT B.au_id FROM titleauthor B)
9> GO
Author ID Author state
----------- -------------------- -----
9 Gold, Dep CA
10 Siler, Dean CA
(2 rows affected)
1>
2>
3> drop table authors;
4> drop table titleauthor;
5> GO
1>
Removing Trailing Blanks
3>
4> SELECT RTRIM(""" + "www.sqle.ru sqle ") + """
5> GO
------------------------
"www.sqle.ru sqle"
(1 rows affected)
1>
RTRIM a column
2> CREATE TABLE titles(
3> title_id varchar(20),
4> title varchar(80) NOT NULL,
5> type char(12) NOT NULL,
6> pub_id char(4) NULL,
7> price money NULL,
8> advance money NULL,
9> royalty int NULL,
10> ytd_sales int NULL,
11> notes varchar(200) NULL,
12> pubdate datetime NOT NULL
13> )
14> GO
1>
2> insert titles values ("1", "Secrets", "popular_comp", "1389", $20.00, $8000.00, 10, 4095,"Note 1","06/12/94")
3> insert titles values ("2", "The", "business", "1389", $19.99, $5000.00, 10, 4095,"Note 2","06/12/91")
4> insert titles values ("3", "Emotional", "psychology", "0736", $7.99, $4000.00, 10, 3336,"Note 3","06/12/91")
5> insert titles values ("4", "Prolonged", "psychology", "0736", $19.99, $2000.00, 10, 4072,"Note 4","06/12/91")
6> insert titles values ("5", "With", "business", "1389", $11.95, $5000.00, 10, 3876,"Note 5","06/09/91")
7> insert titles values ("6", "Valley", "mod_cook", "0877", $19.99, $0.00, 12, 2032,"Note 6","06/09/91")
8> insert titles values ("7", "Any?", "trad_cook", "0877", $14.99, $8000.00, 10, 4095,"Note 7","06/12/91")
9> insert titles values ("8", "Fifty", "trad_cook", "0877", $11.95, $4000.00, 14, 1509,"Note 8","06/12/91")
10> GO
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1>
2> SELECT RTRIM(type) + ":" + title_id FROM titles
3> GO
---------------------------------
popular_comp:1
business:2
psychology:3
psychology:4
business:5
mod_cook:6
trad_cook:7
trad_cook:8
(8 rows affected)
1>
2> drop table titles;
3> GO
1>
RTRIM will remove trailing spaces from a string.
3> DECLARE @STRING_WITH_SPACES VARCHAR(30)
4> DECLARE @STRING_WITHOUT_SPACES VARCHAR(30)
5> SET @STRING_WITH_SPACES = "www.sqle.ru sqle"
6>
7> SET @STRING_WITHOUT_SPACES = RTRIM(@STRING_WITH_SPACES)
8>
9> SELECT @STRING_WITH_SPACES + "!"
10> SELECT @STRING_WITHOUT_SPACES + "!"
11> GO
-------------------------------
www.sqle.ru sqle!
(1 rows affected)
-------------------------------
www.sqle.ru sqle!
(1 rows affected)
select LTRIM(RTRIM(" SQL Server "))
3> select LTRIM(RTRIM(" SQL Server "))
4> GO
------------
SQL Server
(1 rows affected)
1>
select RTRIM(" SQL Server ")
3> select RTRIM(" SQL Server ")
4> GO
------------
SQL Server
(1 rows affected)
1>