Question

我在SQL Server中遇到问题，我正在尝试查询

where x.numbers >= '9'

其中x.numbers存储为varchar，我在该字段中的某些值为

8.9
9.3
6.7
>10
8.3
>= 9

如果我尝试isnumeric(x.numbers)，则排除那些以＆gt;开头的值或＆gt; =。我尝试了cast(x.numbers as decimal)，但效果不佳。请指教

Answer 1

这是我的尝试。它不漂亮，但可能会让你得到你想要的东西。它会增加/减少具有FreeRADIUS Version 3.0.13 Copyright (C) 1999-2017 The FreeRADIUS server project and contributors There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE You may redistribute copies of FreeRADIUS under the terms of the GNU General Public License For more information about these matters, see the file named COPYRIGHT Starting - reading configuration files ... [...] (0) Received Access-Request Id 40 from 192.168.0.10:56726 to 192.168.0.235:1812 length 209 (0) Service-Type = Framed-User (0) Framed-Protocol = PPP (0) NAS-Port = 15729311 (0) NAS-Port-Type = Ethernet (0) User-Name = "user-00000005" (0) Calling-Station-Id = "XX:XX:XX:XX:XX:XX" (0) Called-Station-Id = "XXXXX" (0) NAS-Port-Id = "XXXXXXXX" (0) MS-CHAP-Challenge = 0x3a9fbb09c454698c577ecda8de0a6c5e (0) MS-CHAP2-Response = 0x01000c96d60e85b8b37cfe9da70ab58f7f50000000000000000039177e3ff8b31533f8fe81dd126a5b553e4a9e76474b0757 (0) NAS-Identifier = "HOSTxxxx" (0) NAS-IP-Address = 192.168.0.10 (0) # Executing section authorize from file /etc/raddb/sites-enabled/default (0) authorize { (0) policy filter_username { (0) if (!&User-Name) { (0) if (!&User-Name) -> FALSE (0) if (&User-Name =~ / /) { (0) if (&User-Name =~ / /) -> FALSE (0) if (&User-Name =~ /@.*@/ ) { (0) if (&User-Name =~ /@.*@/ ) -> FALSE (0) if (&User-Name =~ /\\.\\./ ) { (0) if (&User-Name =~ /\\.\\./ ) -> FALSE (0) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\\.(.+)$/)) { (0) if ((&User-Name =~ /@/) && (&User-Name !~ /@(.+)\\.(.+)$/)) -> FALSE (0) if (&User-Name =~ /\\.$/) { (0) if (&User-Name =~ /\\.$/) -> FALSE (0) if (&User-Name =~ /@\\./) { (0) if (&User-Name =~ /@\\./) -> FALSE (0) } # policy filter_username = notfound (0) [preprocess] = ok (0) [chap] = noop (0) mschap: Found MS-CHAP attributes. Setting 'Auth-Type = mschap' (0) [mschap] = ok (0) [digest] = noop (0) suffix: Checking for suffix after "@" (0) suffix: No '@' in User-Name = "user-00000005", looking up realm NULL (0) suffix: No such realm "NULL" (0) [suffix] = noop (0) eap: No EAP-Message, not doing EAP (0) [eap] = noop (0) files: users: Matched entry DEFAULT at line 187 (0) [files] = ok (0) [expiration] = noop (0) [logintime] = noop (0) pap: WARNING: No "known good" password found for the user. Not setting Auth-Type (0) pap: WARNING: Authentication will fail unless a "known good" password is available (0) [pap] = noop (0) } # authorize = ok (0) Found Auth-Type = MS-CHAP (0) # Executing group from file /etc/raddb/sites-enabled/default (0) Auth-Type MS-CHAP { (0) mschap: WARNING: No Cleartext-Password configured. Cannot create NT-Password (0) mschap: WARNING: No Cleartext-Password configured. Cannot create LM-Password (0) mschap: Creating challenge hash with username: user-00000005 (0) mschap: Client is using MS-CHAPv2 (0) mschap: ERROR: FAILED: No NT/LM-Password. Cannot perform authentication (0) mschap: ERROR: MS-CHAP2-Response is incorrect (0) [mschap] = reject (0) } # Auth-Type MS-CHAP = reject (0) Failed to authenticate the user (0) Using Post-Auth-Type Reject (0) # Executing group from file /etc/raddb/sites-enabled/default (0) Post-Auth-Type REJECT { (0) attr_filter.access_reject: EXPAND %{User-Name} (0) attr_filter.access_reject: --> user-00000005 (0) attr_filter.access_reject: Matched entry DEFAULT at line 11 (0) [attr_filter.access_reject] = updated (0) [eap] = noop (0) policy remove_reply_message_if_eap { (0) if (&reply:EAP-Message && &reply:Reply-Message) { (0) if (&reply:EAP-Message && &reply:Reply-Message) -> FALSE (0) else { (0) [noop] = noop (0) } # else = noop (0) } # policy remove_reply_message_if_eap = noop (0) } # Post-Auth-Type REJECT = updated (0) Delaying response for 1.000000 seconds Waking up in 0.3 seconds. (0) (0) Discarding duplicate request from client HOSTxxxx port 56726 - ID: 40 due to delayed response Waking up in 0.6 seconds. (0) (0) Discarding duplicate request from client HOSTxxxx port 56726 - ID: 40 due to delayed response Waking up in 0.4 seconds. (0) Sending delayed response (0) Sent Access-Reject Id 40 from 192.168.0.235:1812 to 192.168.0.10:56726 length 101 (0) MS-CHAP-Error = "\001E=691 R=1 C=ab1fa89cc9439fe9c076aebb6a5e2532 V=3 M=Authentication failed" Waking up in 3.9 seconds.或<：

的值的值

Answer 2

我会使用try_convert()：

 where try_convert(decimal(38, 6), field) > 9

现在，这适用于许多情况，并假设您要忽略非数字值。

你可以修改它以摆脱各种“其他”字符：

 where try_convert(decimal(38, 6), replace(replace(replace(replace(field, ' ', ''), '=', ''), '>', ''), '<', '')) > 9

忽略“运算符”字符。

但是，您的问题未完全指定。如果该字段为'< 12'或'> 7'您希望它返回什么内容？

Answer 3

尝试施放（n为浮动），如下所示：

        create table #tmp(numbers varchar(10))

        insert into #tmp values('8.9')
        insert into #tmp values('9.3')
        insert into #tmp values('6.7')
        insert into #tmp values('11')
        insert into #tmp values('8.3')
        insert into #tmp values('9')
        insert into #tmp values('10')


        Select *  from #tmp where cast(numbers as float)> = cast('9' as float)

        Drop table #tmp

在SQL Server中查询varchars为小数

3 个答案: