INSERT OVERWRITE

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DocumentationData Lake ComputeSQL StatementSuperSQL StatementUnified StatementDML StatementINSERT OVERWRITE

INSERT OVERWRITE

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Last updated: 2024-08-07 17:25:36

INSERT OVERWRITE

Last updated: 2024-08-07 17:25:36

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Description
Supported engines: Presto and SparkSQL
Applicable table: Native Iceberg tables and external tables
Purpose: Insert data into the row.
Note
Presto supports INSERT OVERWRITE only on partitioned tables of Hive data sources but not on non-partitioned tables and tables of Iceberg data sources.
Statement
INSERT OVERWRITE table_identifier [ partition_spec ] [ ( column_list ) ]
    { VALUES ( { value | NULL } [ , ... ] ) [ , ( ... ) ] | query 
Parameter
table_identifier: Table name in the three-part format. Example: catalog.database.table.
partition_spec: Partitioning column name and value Example: dt='2021-06-01'
column_list: All the columns
query: A general Select query statement.
1.1 a SELECT statement
1.2 a TABLE statement
Example
-- Insert Using a VALUES Clause
INSERT OVERWRITE students VALUES
    ('Ashua Hill', '456 Erica Ct, Cupertino', 111111),
    ('Brian Reed', '723 Kern Ave, Palo Alto', 222222);
﻿
-- Insert Using a SELECT Statement
INSERT OVERWRITE students PARTITION (student_id = 222222)
    SELECT name, address FROM persons WHERE name = "Dora Williams"
﻿
-- Insert Using a TABLE Statement
INSERT OVERWRITE students TABLE visiting_students
﻿
-- Insert with a column list
INSERT OVERWRITE students (address, name, student_id) VALUES
    ('Hangzhou, China', 'Kent Yao', 11215016)
﻿
-- Insert with both a partition spec and a column list
INSERT OVERWRITE students PARTITION (student_id = 11215016) (address, name) VALUES
    ('Hangzhou, China', 'Kent Yao Jr.')
﻿
﻿

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