Module value 

Parameter values read and shown as PostgreSQL’s parse_and_validate_value and ShowGUCOption do. A setting is kept as the text pg_settings.setting reports: an integer in base units, on or off, the canonical name of an enumerated value, or the string itself.

Functions

invalid_value_message

invalid value for parameter "name": "value", the message of a value that does not parse or that a check rejects.

listed_enum_values

The names of an enumerated parameter’s values that pg_settings.enumvals lists.

name_truncation_notice

The notice PostgreSQL raises before it truncates a GUC_IS_NAME string that is longer than an identifier.

parse_setting

Read raw as a value of definition and return the setting it stands for, or the error SET reports for it.

parse_setting_with_context

Read a setting with the session’s current and reset values for partial assignments.

show_setting

Show setting as SHOW and current_setting report it: an integer in the greatest unit that divides it.