即使提供或未提供最后一个字符，如何执行此SQL查询

Question

即使提供或未提供最后一个字符，它也应该返回相同的行

DECLARE @FolderNo VARCHAR(50) = 'T98/11567A'
select * from Cm.Folder WHERE FolderNo LIKE @FolderNo +'_'


DECLARE @FolderNo VARCHAR(50) = 'T98/11567'
select * from Cm.Folder WHERE FolderNo LIKE @FolderNo +'_'

Answer 1

如果多个尾随字符可以，

DECLARE @FolderNo VARCHAR(50) = 'T98/11567A'
select * from Cm.Folder WHERE FolderNo LIKE @FolderNo + '%'

或

DECLARE @FolderNo VARCHAR(50) = 'T98/11567A'
select * from Cm.Folder WHERE LEFT(FolderNo, LEN(@FolderNo)) = @FolderNo

如果零或一个尾随字符可以，

DECLARE @FolderNo VARCHAR(50) = 'T98/11567A'
select * from Cm.Folder WHERE FolderNo = @FolderNo OR FolderNo LIKE @FolderNo + '_'