1)建表CREATE TABLE IF NOT EXISTS test_db.example_site_visit ( `user_id` LARGEINT NOT NULL COMMENT "用户 id", `date` DATE NOT NULL COMMENT "数据灌入日期时间", `city` VARCHAR(20) COMMENT "用户所在城市", `age` SMALLINT COMMENT "用户年龄", `sex` TINYINT COMMENT "用户性别", `last_...
column_name column_type [KEY] [aggr_type] [NULL] [default_value] [column_comment] 1.以上定义列参数解释如下: column_name:列名; column_type:列类型,Doris支持常见的列类型:INT、BIGING、FLOAT、DATE、VARCHAR等,详细参考数据类型小节; aggr_type:表示聚合类型,支持以下聚合类型: SUM:求和。适用数值类型。
导入数据: curl --location-trusted -u root: -T test.csv -H"column_separator:,"http://127.0.0.1:58030/api/demo/example_tbl/_stream_load 执行完结果如下: [root@master94apache-doris-2.0.3-bin-x64]#curl--location-trusted-uroot:-Ttest.csv-H"column_separator:,"http://127.0.0.1:58030/api...
在Flink sql-client 下创建 MySQL CDC 表: CREATE TABLE employees_source ( database_name STRING METADATA VIRTUAL, table_name STRING METADATA VIRTUAL, emp_no int NOT NULL, birth_date date, first_name STRING, last_name STRING, gender STRING, hire_date date, PRIMARY KEY (`emp_no`) NOT ENFORCE...
⚫ 而在聚合模型中,Column 可以分为两大类:Key 和 Value。从业务角度看,Key 和 Value 可以分别对应维度列和指标列。从聚合模型的角度来说,Key 列相同的行, 会聚合成一行。其中 Value 列的聚合方式由用户在建表时指定。 3.2.2 Partition & Tablet ...
REPLACE:替代,下一批数据中的 Value 会替换之前导入过的行中的 Value。 MAX:保留最大值。 MIN:保留最小值。 REPLACE_IF_NOT_NULL:非空值替换。和 REPLACE 的区别在于对于null值,不做替换。 HLL_UNION:HLL 类型的列的聚合方式,通过 HyperLogLog 算法聚合。
NOT NULL DEFAULT '0' , `content` text , `suggestion` text , `standard_info` text , `status` tinyint(3) NOT NULL DEFAULT '0' , `create_time` datetime NOT NULL , `update_time` datetime NOT NULL , `specialist_name` varchar(50) DEFAULT '' , `city` varchar(20) DEFAULT NULL , `...
Doris supports a variety of storage models and has optimized them for different scenarios: Aggregate Key Model: able to merge the value columns with the same keys and significantly improve performance Unique Key Model: Keys are unique in this model and data with the same key will be overwritten...
CreateTime:2021-02-0114:41:53PauseTime:NULLEndTime:NULLDbName:default_cluster:example_db TableName:kafka_test State:RUNNING DataSourceType:KAFKA CurrentTaskNum:1JobProperties:{"partitions":"*","columnToColumnExpr":"id,user_id,age,password","maxBatchIntervalS":"10","whereExpr":"*","timezone...
Doris supports a variety of storage models and has optimized them for different scenarios: Aggregate Key Model: able to merge the value columns with the same keys and significantly improve performance Unique Key Model: Keys are unique in this model and data with the same key will be overwritten...