Amazon Web Services 文档中描述的 Amazon Web Services 服务或功能可能因区域而异。要查看适用于中国区域的差异，请参阅中国的 Amazon Web Services 服务入门。

CloudTrail Lake SQL 限制

CloudTrail Lake 查询是 SQL 字符串。本节介绍了用于创建查询而允许使用的 SQL 语言。

仅允许使用 SELECT 语句。没有查询字符串可以更改或变更数据。API 将 SELECT 语句的范围限制为以下模板中显示的参数树。允许简单的聚合、条件和运算符。不允许使用本节中未描述的关键字、运算符或函数。事件数据存储 ID（事件数据存储的 ARN 的 ID 部分）是表的有效值。

SELECT [ DISTINCT ] columns [ Aggregate ]
[ FROM Tables event_data_store_ID]
[ WHERE columns [ Conditions ] ]
[ GROUP BY columns [ DISTINCT | Aggregate ] ]
[ HAVING columns [ Aggregate | Conditions ] ]
[ ORDER BY columns [ Aggregate | ASC | DESC | NULLS | FIRST | LAST ]
[ LIMIT [ INT ] ]

事件记录字段支持的架构

以下是事件记录字段的有效 SQL 架构。

[
    {
        "Name": "eventversion",
        "Type": "string"
    },
    {
        "Name": "useridentity",
        "Type": "struct<type:string,principalid:string,arn:string,accountid:string,accesskeyid:string,
                 username:string,sessioncontext:struct<attributes:struct<creationdate:timestamp,
                 mfaauthenticated:string>,sessionissuer:struct<type:string,principalid:string,arn:string,
                 accountid:string,username:string>,webidfederationdata:struct<federatedprovider:string,
                 attributes:map<string,string>>,sourceidentity:string,ec2roledelivery:string,
                 ec2issuedinvpc:string>,invokedby:string,identityprovider:string>"
    },
    {
        "Name": "eventtime",
        "Type": "timestamp"
    },
    {
        "Name": "eventsource",
        "Type": "string"
    },
    {
        "Name": "eventname",
        "Type": "string"
    },
    {
        "Name": "awsregion",
        "Type": "string"
    },
    {
        "Name": "sourceipaddress",
        "Type": "string"
    },
    {
        "Name": "useragent",
        "Type": "string"
    },
    {
        "Name": "errorcode",
        "Type": "string"
    },
    {
        "Name": "errormessage",
        "Type": "string"
    },
    {
        "Name": "requestparameters",
        "Type": "map<string,string>"
    },
    {
        "Name": "responseelements",
        "Type": "map<string,string>"
    },
    {
        "Name": "additionaleventdata",
        "Type": "map<string,string>"
    },
    {
        "Name": "requestid",
        "Type": "string"
    },
    {
        "Name": "eventid",
        "Type": "string"
    },
    {
        "Name": "readonly",
        "Type": "boolean"
    },
    {
        "Name": "resources",
        "Type": "array<struct<accountid:string,type:string,arn:string,arnprefix:string>>"
    },
    {
        "Name": "eventtype",
        "Type": "string"
    },
    {
        "Name": "apiversion",
        "Type": "string"
    },
    {
        "Name": "managementevent",
        "Type": "boolean"
    },
    {
        "Name": "recipientaccountid",
        "Type": "string"
    },
    {
        "Name": "sharedeventid",
        "Type": "string"
    },
    {
        "Name": "annotation",
        "Type": "string"
    },
    {
        "Name": "vpcendpointid",
        "Type": "string"
    },
    {
        "Name": "serviceeventdetails",
        "Type": "map<string,string>"
    },
    {
        "Name": "addendum",
        "Type": "map<string,string>"
    },
    {
        "Name": "edgedevicedetails",
        "Type": "map<string,string>"
    },
    {
        "Name": "insightdetails",
        "Type": "map<string,string>"
    },
    {
        "Name": "eventcategory",
        "Type": "string"
    },
    {
        "Name": "tlsdetails",
        "Type": "struct<tlsversion:string,ciphersuite:string,clientprovidedhostheader:string>"
    },
    {
        "Name": "sessioncredentialfromconsole",
        "Type": "string"
    },
    {
        "Name": "eventjson",
        "Type": "string"
    }
    {
        "Name": "eventjsonchecksum",
        "Type": "string"
    }
]

聚合函数和条件运算符

允许以下 Aggregate 函数。

SUM
MIN
MAX
AVG
COUNT

允许以下 Condition 运算符。

AND
OR
IN
NOT
IS (NOT) NULL
LIKE
<
>
<=
>=
<>
!=
( conditions ) #parenthesised conditions

支持的函数

以下是 CloudTrail Lake 查询支持的函数。有关描述和示例，请参阅 Presto 0.266 文档网站上的 JSON 函数和运算符。

支持的日期转换函数

如需详细了解支持的日期和时间函数，请参阅 Presto 0.266 文档网站中的日期与时间函数和运算符。