geqo_selection_bias

Controls the selection bias used by GEQO. The selection bias is the selective pressure within the population. Values can be from 1.50 to 2.00; the latter is the default.

English manual coverage begins with PostgreSQL 7.4. Source history and runtime observations have their own recorded version boundaries.

Reading PG 18·Select a recorded version

7.4 8.0 8.1 8.2 8.3 8.4 9.0 9.1 9.2 9.3 9.4 9.5 9.6 10 11 12 13 14 15 16 17 18 19 20

boot val: 2
category: Query Tuning / Genetic Query Optimizer
context: user
documented: true
enumvals: Unknown
extra desc: Unknown
lang: en
max val: 2
metadata version: 18
min val: 1.5
name: geqo_selection_bias
short desc: GEQO: selective pressure within the population.
source: pg-settings-source-snapshot
unit: Unknown
vartype: real

Definition PG 18

Controls the selection bias used by GEQO. The selection bias is the selective pressure within the population. Values can be from 1.50 to 2.00; the latter is the default.

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Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:1f53b28e0b96aa5e0c8c75b1aa0a4c6d710684a55f8c7d84bd66770e9f4f13fe

Text language: en · wiki-repair-20261023:1f53b28e0b96aa5e0c8c75b1aa0a4c6d710684a55f8c7d84bd66770e9f4f13fe