SQL Server/T-SQL Tutorial/String Functions/REPLICATE
Содержание
Repeating an Expression N Number of Times
<source lang="sql">
4> 5> SELECT REPLICATE ("Z", 30) 6> GO
ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ (1 rows affected)</source>
REPLICATE("A", 3)
<source lang="sql">
3> CREATE TABLE mytable 4> ( 5> int_val int, 6> smallint_val smallint, 7> numeric_val numeric(8, 2), 8> tiny_const tinyint, 9> float_val float, 10> date_val datetime, 11> char_strng char(10) 12> ) 13> GO 1> 2> DECLARE @myvar1 numeric(8, 2) 3> SELECT @myvar1=65.45 4> 5> INSERT mytable (int_val, smallint_val, numeric_val, tiny_const, 6> float_val, date_val, char_strng) 7> VALUES 8> (OBJECT_ID("mytable"), @@spid, @myvar1 / 10.0, 5, 9> SQRT(144), GETDATE(), REPLICATE("A", 3) + REPLICATE("B", 3)) 10> GO (1 rows affected) 1> 2> SELECT * FROM mytable 3> GO int_val smallint_val numeric_val tiny_const float_val date_val char_strng
------------ ----------- ---------- ------------------------ ----------------------- ----------
1019202731 51 6.55 5 12 2008-08-17 13:19:00.380 AAABBB
(1 rows affected) 1> 2> 3> drop table myTable; 4> GO 1> 2></source>
REPLICATE is used if you wish to replicate the same string several times.
<source lang="sql">
4> SELECT REPLICATE("www.sqle.ru! ",5) 5> 6>
www.sqle.ru! www.sqle.ru! www.sqle.ru! www.sqle.ru! www.sqle.ru! (1 rows affected)</source>
select REPLACE(RIGHT("(1212", 13), ") ", "-")
<source lang="sql">
2> select REPLACE(RIGHT("(559) 555-1212", 13), ") ", "-") 3> GO
559-555-1212
(1 rows affected)</source>
The REPLICATE() and LEN() Functions
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5> 6> CREATE TABLE employee( 7> id INTEGER NOT NULL PRIMARY KEY, 8> first_name VARCHAR(10), 9> last_name VARCHAR(10), 10> salary DECIMAL(10,2), 11> start_Date DATETIME, 12> region VARCHAR(10), 13> city VARCHAR(20), 14> managerid INTEGER 15> ); 16> GO 1> INSERT INTO employee VALUES (1, "Jason" , "Martin", 5890,"2005-03-22","North","Vancouver",3); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (2, "Alison", "Mathews",4789,"2003-07-21","South","Utown",4); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (3, "James" , "Smith", 6678,"2001-12-01","North","Paris",5); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (4, "Celia" , "Rice", 5567,"2006-03-03","South","London",6); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (5, "Robert", "Black", 4467,"2004-07-02","East","Newton",7); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (6, "Linda" , "Green" , 6456,"2002-05-19","East","Calgary",8); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (7, "David" , "Larry", 5345,"2008-03-18","West","New York",9); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (8, "James" , "Cat", 4234,"2007-07-17","West","Regina",9); 2> GO (1 rows affected) 1> INSERT INTO employee VALUES (9, "Joan" , "Act", 6123,"2001-04-16","North","Toronto",10); 2> GO (1 rows affected) 1> 2> select * from employee; 3> GO id first_name last_name salary start_Date region city managerid
---------- ---------- ------------ ----------------------- ---------- -------------------- -----------
1 Jason Martin 5890.00 2005-03-22 00:00:00.000 North Vancouver 3
2 Alison Mathews 4789.00 2003-07-21 00:00:00.000 South Utown 4
3 James Smith 6678.00 2001-12-01 00:00:00.000 North Paris 5
4 Celia Rice 5567.00 2006-03-03 00:00:00.000 South London 6
5 Robert Black 4467.00 2004-07-02 00:00:00.000 East Newton 7
6 Linda Green 6456.00 2002-05-19 00:00:00.000 East Calgary 8
7 David Larry 5345.00 2008-03-18 00:00:00.000 West New York 9
8 James Cat 4234.00 2007-07-17 00:00:00.000 West Regina 9
9 Joan Act 6123.00 2001-04-16 00:00:00.000 North Toronto 10
(9 rows affected) 1> 2> 3> SELECT Last_Name + REPLICATE("*", 20 - LEN(first_Name)) 4> FROM Employee 5> GO
Martin***************
Mathews**************
Smith***************
Rice***************
Black**************
Green***************
Larry***************
Cat***************
Act****************
(9 rows affected)
1>
2> drop table employee;
3> GO
1></source>
