optimizer_prune_level

Overview

In 11.4 ES:

Controls the heuristic(s) applied during query optimization to prune less-promising partial plans from the optimizer search space. Meaning: 0 - do not apply any heuristic, thus perform exhaustive search: 1 - prune plans based on cost and number of retrieved rows eq_ref: 2 - prune also if we find an eq_ref chain

In 10.6 ES, 10.6 CS, 10.5 ES, 10.5 CS, 10.4 ES, 10.4 CS, 10.3 ES, 10.3 CS, 10.2 ES, 10.2 CS:

Controls the heuristic(s) applied during query optimization to prune less-promising partial plans from the optimizer search space. Meaning: 0 - do not apply any heuristic, thus perform exhaustive search; 1 - prune plans based on number of retrieved rows

In 10.6 ES, 10.5 ES, 10.4 ES:

Controls the heuristic(s) applied during query optimization to prune less-promising partial plans from the optimizer search space. Meaning: 0 - do not apply any heuristic, thus perform exhaustive search; 1 - prune plans based on number of retrieved rows

See also: System Variables for MariaDB Enterprise Server 11.4, in 10.6 ES, in 10.5 ES, in 10.4 ES, in 10.3 ES, in 10.2 ES, in 10.6 CS, in 10.5 CS, in 10.4 CS, in 10.3 CS, and in 10.2 CS

See also: System Variables for MariaDB Enterprise Server 11.4, in 10.6 ES, in 10.5 ES, and in 10.4 ES

USAGE

DETAILS

SYNONYMS

SCHEMA

PARAMETERS

Command-line

--optimizer_prune_level=#

Configuration file

Supported

Dynamic

Yes

Scope

Global, Session

Data Type

BIGINT UNSIGNED

Minimum Value

0

Maximum Value

2

Product Default Value

2

SKYSQL

Cloud

SkySQL Topology

ES Ver

Service Default

AWS

Multi-Node Analytics

10.6

1

Single Node Analytics

10.6

1

Replicated Transactions

10.4

1

10.5

1

10.6

1

Single Node Transactions

10.4

1

10.5

1

10.6

1

GCP

Multi-Node Analytics

10.6

1

Single Node Analytics

10.6

1

Replicated Transactions

10.4

1

10.5

1

10.6

1

Single Node Transactions

10.4

1

10.5

1

10.6

1

Cloud

SkySQL Topology

ES Ver

Service Default

AWS

ColumnStore Data Warehouse

10.6

1

Enterprise Server With Replica(s)

10.4

1

10.5

1

10.6

1

Enterprise Server Single Node

10.4

1

10.5

1

10.6

1

GCP

ColumnStore Data Warehouse

10.6

1

Enterprise Server With Replica(s)

10.4

1

10.5

1

10.6

1

Enterprise Server Single Node

10.4

1

10.5

1

10.6

1

PRIVILEGES

EXAMPLES

ERROR HANDLING

FEATURE INTERACTION

RESPONSES

DIAGNOSIS

ISO 9075:2016

CHANGE HISTORY

Release Series

History

11.4 Enterprise

  • Not present.

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

10.2 Community

  • Present starting in MariaDB Community Server 10.2.0.

Release Series

History

11.4 Enterprise

  • Not present.

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

EXTERNAL REFERENCES