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2024年6月6日发(作者:html聊天室代码)
hive 建表语法
英文回答:
Hive is a data warehouse infrastructure built on top of
Hadoop that provides a SQL-like language called HiveQL for
querying and analyzing large datasets. When creating tables
in Hive, you need to use the CREATE TABLE statement along
with various clauses and options to define the table's
schema, data types, and storage format.
Here is the basic syntax for creating a table in Hive:
CREATE TABLE table_name (。
column1 data_type,。
column2 data_type,。
...
)。
[ROW FORMAT row_format]
[STORED AS file_format]
[TBLPROPERTIES (property_name=property_value, ...)]
Let's break down the syntax and explain each component:
1. CREATE TABLE: This is the keyword used to create a
new table in Hive.
2. table_name: This is the name you choose for your
table. It should be unique within the database.
3. column1, column2, ...: These are the column names of
your table. You need to specify the column name followed by
its data type.
4. data_type: This specifies the data type of the
corresponding column. Hive supports various data types such
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