Help Center> MapReduce Service> Component Operation Guide (LTS)> Using CarbonData> CarbonData Syntax Reference> DML> DELETE SEGMENT by DATE
Updated on 2023-04-28 GMT+08:00
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DELETE SEGMENT by DATE

Function

This command is used to delete segments by loading date. Segments created before a specific date will be deleted.

Syntax

DELETE FROM TABLE db_name.table_name WHERE SEGMENT.STARTTIME BEFORE date_value;

Parameter Description

Table 1 DELETE SEGMENT by DATE parameters

Parameter

Description

db_name

Database name. If this parameter is not specified, the current database is used.

table_name

Name of a table in the specified database

date_value

Valid date when segments are started to be loaded. Segments before the date will be deleted.

Precautions

Segments cannot be deleted from the stream table.

Example

DELETE FROM TABLE db_name.table_name WHERE SEGMENT.STARTTIME BEFORE '2017-07-01 12:07:20';

STARTTIME indicates the loading start time of different loads.

System Response

Success or failure will be recorded in CarbonData logs.

Parent topic: DML