3.1 创建分区表 使用Hive SQL语句创建一个分区表,通过partitioned by指定分区字段。以下是一个示例代码: CREATETABLEpartitioned_table(idINT,name STRING)PARTITIONEDBY(dateSTRING) 1. 2. 3. 4. 5. 3.2 加载数据 将数据加载到分区表中,数据会根据指定的分区字段进行划分存储。可以使用INSERT INTO语句将数据插入...
想要创建带分区的表的话,(由于我太菜)只能先create table再把字段列上&分区打上,再insert到表里。 问题:有没有直接能create table as 并且顺便partition by的sql语句呢? 根据大佬@范捷琦Jackie 尝试过 create table B as( select * from A ) partitioned by (item_a string) 编译报错FAILED: ParseException ...
CREATE TABLE my_partitioned_table ( id INT, created_date DATE, -- 其他列... ) PARTITION BY RANGE (MONTH(created_date)) ( PARTITION p1 VALUES LESS THAN (2), PARTITION p2 VALUES LESS THAN (3), PARTITION p3 VALUES LESS THAN (4), PARTITION p4 VALUES LESS THAN (5), PARTITION p5 VALU...
partition by range (OPERATETIME) ( PARTITION SYSTEM_DATACHANGETRACE_N_N201806 VALUES LESS THAN (TO_DATE('2018-06-01 00:00:00','yyyy/mm/dd hh24:mi:ss')) TABLESPACE SYSTEMT, PARTITION SYSTEM_DATACHANGETRACE_N_N201807 VALUES LESS THAN (TO_DATE('2018-07-01 00:00:00','yyyy/mm/dd h...
`[COMMENT table_comment]` `[PARTITIONED BY (col_name data_type [COMMENT col_comment], ...)]` `[CLUSTERED BY (col_name, col_name, ...) [SORTED BY (col_name [ASC|DESC], ...)] INTO num_buckets BUCKETS]` `[SKEWED BY (col_name, col_name, ...) -- (Note: Available in Hive...
-- Create partitioned table>CREATETABLEstudent (idINT,nameSTRING, ageINT) PARTITIONEDBY(age);-- Create a table with a generated column>CREATETABLErectangles(aINT, bINT, areaINTGENERATEDALWAYSAS(a * b));-- Create a table with a string column with a case-insensitive collation.>CREATE...
3、分区是以字段的形式在表结构中存在,通过describe table命令可以查看到字段存在,但是该字段不存放实际的数据内容,仅仅是分区的表示。 4、建表的语法(建分区可参见PARTITIONED BY参数): CREATE [EXTERNAL] TABLE [IF NOT EXISTS] table_name [(col_name data_type [COMMENT col_comment], ...)] [COMMENT ta...
CREATE PARTITION FUNCTION myRangePF1(INT) AS RANGE LEFT FOR VALUES (1, 100, 1000); GO CREATE PARTITION SCHEME myRangePS1 AS PARTITION myRangePF1 TO (test1fg, test2fg, test3fg, test4fg); GO CREATE TABLE PartitionTable ( col1 INT, col2 CHAR (10) ) ON myRangePS1 (col1); GO Ba...
原文:http://hi.baidu.com/s__wind/blog/item/61365a80b21bb9ccbc3e1ed4.html 关于SQL的partition by 字段的一些用法心得 先看例子: if object_id('TESTDB') is not null drop table TESTDB create table TESTDB(A varchar(8), B varchar(8)) ...
还可以使用PARTITION子句直接指定分区。 此语法也适用于不使用 Delta Lake 格式的表,可以通过使用ALTER TABLE语句快速对DROP、ADD或RENAME进行分区。 由...分区 PARTITIONED BY子句指定了新表分区依据列的列表。 语法 复制 PARTITIONED BY ( { partition_column [ column_type ] } [, ...] ) ...