unique_checks

Overview

If set to 1, the default, secondary indexes in InnoDB tables are performed. If set to 0, storage engines can (but are not required to) assume that duplicate keys are not present in input data. Set to 0 to speed up imports of large tables to InnoDB. The storage engine will still issue a duplicate key error if it detects one, even if set to 0.

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

Not Supported

Configuration file

Not Supported

Dynamic

Yes

Scope

Global, Session

Data Type

BOOLEAN (OFF, ON)

Product Default Value

ON

SKYSQL

Cloud

SkySQL Topology

ES Ver

Service Default

AWS

Multi-Node Analytics

10.6

ON

Single Node Analytics

10.6

ON

Replicated Transactions

10.4

ON

10.5

ON

10.6

ON

Single Node Transactions

10.4

ON

10.5

ON

10.6

ON

GCP

Multi-Node Analytics

10.6

ON

Single Node Analytics

10.6

ON

Replicated Transactions

10.4

ON

10.5

ON

10.6

ON

Single Node Transactions

10.4

ON

10.5

ON

10.6

ON

Cloud

SkySQL Topology

ES Ver

Service Default

AWS

ColumnStore Data Warehouse

10.6

ON

Enterprise Server With Replica(s)

10.4

ON

10.5

ON

10.6

ON

Enterprise Server Single Node

10.4

ON

10.5

ON

10.6

ON

GCP

ColumnStore Data Warehouse

10.6

ON

Enterprise Server With Replica(s)

10.4

ON

10.5

ON

10.6

ON

Enterprise Server Single Node

10.4

ON

10.5

ON

10.6

ON

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