Q. How can I pass an array of values to a SQL Server stored-procedure.
(v1.1 1999.05.14)
A. Basically you can't - SQL Server has no array type - ANSI SQL 92 does not specify array support. But there are various ways around it.
确切的说不行-SQL SERVER没有数组类型，ANSI SQL 92标准也不支持数组。但可用其它的方法来实现。
1. You could simulate an array by passing one or more varchar(255) fields with comma-separated values and then use a WHILE loop with PATINDEX and SUBSTR to extract the values.
1、你可以使用几个VARCHAR（255）字段来模拟数组，字段中用逗号分开各个数据，然后使用循环和PATINDEX和SUBSTR分开这些数据。
2. The more usual way to do this would be to populate a temporary table with the values you need and then use the contents of that table from within the stored-procedure. Example of this below
2、通常这种方法需要为这些数据创建一个临时表，然后在存储过程使用表中的内容。如下例
create procedure mytest @MyParmTempTable varchar(30)
as
begin
-- @MyParmTempTable contains my parameter list... 这个变量是包含参数的表名
-- For simplicity use dynamic sql to copy into a normal temp table...
create table #MyInternalList (
list_item varchar( 2 ) not null
)
set nocount on
insert #MyInternalList
exec ( "select * from " + @MyParmTempTable )
set nocount off
-- It is now easier to join..
select *
from sysobjects
where type in ( select list_item from #MyInternalList )
end
go
To call..
create table #MyList (
list_item varchar( 2 ) not null
)
insert #MyList values ( 'S' )
insert #MyList values ( 'U' )
insert #MyList values ( 'P' )
exec mytest "#MyList"
3. If all you wanted to do was use the array/list as input to an IN clause in a WHERE statement you could use :-
3、如果你想在IN子句里使用输入的数组参数可以这样做：
CREATE PROCEDURE sp_MyProcedure (@MyCommaDelimitedString
Varchar(255))
AS
BEGIN
EXEC ('SELECT * FROM MYTABLE WHERE MYFIELD IN (' + @MyCommaDelimitedString + ')')
END
GO
