是否有带变量的ssql中的StartsWith或Contains？

Question

我试图检测服务器是否正在运行Express Edition.

我有以下t sql.

DECLARE @edition varchar(50); 
set @edition = cast((select SERVERPROPERTY ('edition')) as varchar)

print @edition

在我的例子中, @edition = Express Edition (64-bit)

我该怎么办？(C#启发).

DECLARE @isExpress bit;
set @isExpress = @edition.StartsWith('Express Edition');

Answer 1

以..开始

a) left(@edition, 15) = 'Express Edition'
b) charindex('Express Edition', @edition) = 1

包含

charindex('Express Edition', @edition) >= 1

例子

left 功能

set @isExpress = case when left(@edition, 15) = 'Express Edition' then 1 else 0 end

iif 功能(从SQL Server 2012开始)

set @isExpress = iif(left(@edition, 15) = 'Express Edition', 1, 0);

charindex 功能

set @isExpress = iif(charindex('Express Edition', @edition) = 1, 1, 0);

Answer 2

看起来你想要的是http://msdn.microsoft.com/en-us/library/ms186323.aspx.

在你的例子中它将是(开头):

set @isExpress = (CharIndex('Express Edition', @edition) = 1)

或包含

set @isExpress = (CharIndex('Express Edition', @edition) >= 1)

Answer 3

我会用

like 'Express Edition%'

例:

DECLARE @edition varchar(50); 
set @edition = cast((select SERVERPROPERTY ('edition')) as varchar)

DECLARE @isExpress bit
if @edition like 'Express Edition%'
    set @isExpress = 1;
else
    set @isExpress = 0;

print @isExpress

Answer 4

以下是对过滤数据时可以执行的操作的说明 - 最后，您只需将变量传递到需要的地方即可。

WHERE CustomerName LIKE 'a%'
--Finds any values that start with "a"

WHERE CustomerName LIKE '%a'
--Finds any values that end with "a"

WHERE CustomerName LIKE '%or%'
--Finds any values that have "or" in any position

WHERE CustomerName LIKE '_r%'
--Finds any values that have "r" in the second position

WHERE CustomerName LIKE 'a__%'
--Finds any values that start with "a" and are at least 3 characters in length

WHERE ContactName LIKE 'a%o'
--Finds any values that start with "a" and ends with "o"

SELECT * FROM my_table WHERE upper(my_column) LIKE 'SEARCHED%';
--Starts with, case insensitive 

SELECT * FROM my_table WHERE upper(my_column) LIKE '%SEARCHED';
--Ends with, case insensitive

SELECT * FROM my_table WHERE upper(my_column) LIKE '%SEARCHED%';
--Contains, case insensitive