Su, Xiaomeng 76a5b1ee83 dli_sqlreference_20240227

Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: Su, Xiaomeng <suxiaomeng1@huawei.com>
Co-committed-by: Su, Xiaomeng <suxiaomeng1@huawei.com>

2024-03-27 22:02:33 +00:00

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Viewing the Execution Plan

Function

This statement returns the logical plan and physical execution plan for the SQL statement.

Syntax

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EXPLAIN [EXTENDED | CODEGEN] statement;

Keywords

EXTENDED: After this keyword is specified, the logical and physical plans are outputted at the same time.

CODEGEN: After this keyword is specified, code generated by using the Codegen is also outputted.

Precautions

None

Example

To return the logical and physical plans of SELECT * FROM test, run the following statement:

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EXPLAIN EXTENDED select * from test;

Parent topic: Spark SQL Syntax Reference

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