有人可以帮我编写一个云形成脚本来更新 Athena 主工作组的输出位置。当我运行下面的代码时,收到错误消息“提供的请求无效:无法创建主工作组(服务:Athena,状态代码:400,请求 ID:9945209c-6999-4e8b-bd3d-a3af13b4ac4f)”
Resources:
MyAthenaWorkGroup:
Type: AWS::Athena::WorkGroup
Properties:
Name: primary
Description: My WorkGroup Updated
State: DISABLED
WorkGroupConfigurationUpdates:
BytesScannedCutoffPerQuery: 10000000
EnforceWorkGroupConfiguration: true
PublishCloudWatchMetricsEnabled: true
RequesterPaysEnabled: false
ResultConfigurationUpdates:
EncryptionConfiguration:
EncryptionOption: SSE_S3
OutputLocation: s3://test/
Run Code Online (Sandbox Code Playgroud) 当我在启动资源时选择“计划作业”时,内部如何处理该流程?我可以验证ECS中的容器吗?我想它会为此选项使用批处理作业。
# copilot init
Note: It's best to run this command in the root of your Git repository.
Welcome to the Copilot CLI! We're going to walk you through some questions
to help you get set up with an application on ECS. An application is a collection of
containerized services that operate together.
Which workload type best represents your architecture? [Use arrows to move, type to filter, ? for more help]
> Load Balanced Web Service
Backend Service
Scheduled Job …Run Code Online (Sandbox Code Playgroud) 我有这个文本文件:
# cat letter.txt
this
is
just
a
test
to
check
if
grep
works
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字母“e”出现在 3 个单词中。
# grep e letter.txt
test
check
grep
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有没有办法返回打印在所选字符左侧的字母?
expected.txt
t
h
r
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from io import StringIO
u_cols = ['word','count']
audit_trail = StringIO('''
test 1
testing 24
tested
again 5
begin
again 6
begin
again
''')
df = pd.read_csv(audit_trail, sep=" ", names = u_cols )
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我可以通过 groupby 查找有多少值为 null:
df.groupby('word')['count'].apply(list)
word
again [5.0, 6.0, nan]
begin [nan, nan]
test [1.0]
tested [nan]
testing [24.0]
Name: count, dtype: object
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如果组计数大于 1 并且所有值都是 nan 则不包括此类条目。
Expected:
again [5.0, 6.0, nan]
test [1.0]
tested [nan]
testing [24.0]
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为了获得这些结果,应该从数据框中删除单词“ begin ”。
df[df.word != "begin"]
word count …Run Code Online (Sandbox Code Playgroud) 我正在尝试修改文本文件的几行。
# cat example.txt
tested
tests
testing
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如果单词“test”后面没有跟“ed”或“s”,则将其更改为单词“work”。以下表达式按预期工作:
test(?!ed|s)
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但它在 sed 中不起作用,就像这样......
# sed -r 's/test\(?!ed\|s\)/work/g' example.txt
tested
tests
testing
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预期输出是:
tested
tests
working
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我猜 sed 不支持前瞻或回顾。还有其他简单的linux命令吗?
echo "sed -i 's/NULL/\\N/g' ".$_REQUEST['para'].".sql";
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以上陈述有效.但是当我在这样的exec中使用它时失败了......
exec("sed -i 's/NULL//\/\/\N/g' ".$_REQUEST['para'].".sql");
Run Code Online (Sandbox Code Playgroud) 复合外键索引不能像我想象的那样工作.在以下示例中,我只想在子表中允许10种组合.但即使父表中没有匹配的组合,最后一个insert语句也是成功的.有没有其他方法可以实现这种约束?
drop table if exists child;
drop table if exists parent;
CREATE TABLE parent(
`ID` int(11) default NULL,
`name` varchar(100) default NULL,
`city` varchar(100) default NULL,
key (name,city),
key (ID)
) ENGINE=InnoDB;
create table child(
userID int not null,
`name` varchar(100) default NULL,
`city` varchar(100) default NULL,
key (name,city),
FOREIGN KEY (name,city) REFERENCES parent(name,city),
primary key (userID)
) ENGINE=InnoDB;
insert into parent values (1, 'Amar', 'mumbai');
insert into parent values (2, 'Amar', 'Delhi');
insert into parent values (3, 'Amar', NULL); …Run Code Online (Sandbox Code Playgroud) 我如何知道更新查询会影响多少行?
mysql> update todel set name = 'xyz' where id = 1;
Query OK, 0 rows affected (0.00 sec)
Rows matched: 1 Changed: 0 Warnings: 0
mysql> select mysql_affected_rows();
ERROR 1305 (42000): FUNCTION test.mysql_affected_rows does not exist
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我想在存储过程中使用此函数.
以下命令按预期工作.我需要找到的是第一列或第三列中可用的线程ID.
# tail -1000 general.log | grep Connect | egrep -v "(abc|slave_user)"
2856057 Connect root@localhost on
111116 5:14:01 2856094 Connect root@localhost on
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如果该行以日期开头,请选择第三列,即2856094或第一列,即2856057
Expected output:
2856057
2856094
Run Code Online (Sandbox Code Playgroud) 我已经浏览了这个页面......
http://www.php.net/manual/en/function.hash.php
MD5长度为32个字符,而sha1为40个.例如
$str = 'apple';
sha1 string d0be2dc421be4fcd0172e5afceea3970e2f3d940
md5 string 1f3870be274f6c49b3e31a0c6728957f
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即使可选的raw_output设置为TRUE,也会以原始二进制格式返回md5摘要,其长度为16.
我正在寻找一个函数,它将创建等于或小于8个字符的哈希值.
更新:我需要更小的字符串有3个原因:
1)MySQL Archive表类型似乎不允许具有超过8个字符的列的索引
2)我打算使用类似redis的键值实用程序,它喜欢更小的键
3)安全性不是问题.我正在哈希像"country + telco + operator"这样的列