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Wiki / Protocol Messages

CopyFail

CopyFail is a frontend protocol message. Identifies the message as a COPY -failure indicator.

Reading PG 18·Select a recorded version

Direction
Frontend → backend
First wire field
Byte1('f')
Field entries
3
Documented flow contexts
COPY Operations
direction
F
manual path
/docs/18/protocol-message-formats.html
signature
CopyFail (F)

Definition PG 18

Byte1('f')

Identifies the message as a COPY-failure indicator.

Int32

Length of message contents in bytes, including self.

String

An error message to report as the cause of failure.

Wire fields in documented order

PositionFormatMeaning
1Byte1('f')Identifies the message as a COPY -failure indicator.
2Int32Length of message contents in bytes, including self.
3StringAn error message to report as the cause of failure.

Compare versions

Complete source facts

fields

map[description:Identifies the message as a COPY -failure indicator. format:Byte1('f')], map[description:Length of message contents in bytes, including self. format:Int32], map[description:An error message to report as the cause of failure. format:String]

Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

Text language: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f