Insert (logical replication)

Logical replication Insert format. Identifies the message as an insert message.

Reading PG 18·Select a recorded version

Layer: Logical replication payload; distinct from the frontend/backend message envelope
First field: Byte1('I')
manual path: /docs/18/protocol-logicalrep-message-formats.html
signature: Insert

Definition PG 18

Byte1('I'): Identifies the message as an insert message.
Int32 (TransactionId): Xid of the transaction (only present for streamed transactions). This field is available since protocol version 2.
Int32 (Oid): OID of the relation corresponding to the ID in the relation message.
Byte1('N'): Identifies the following TupleData message as a new tuple.
TupleData: TupleData message part representing the contents of new tuple.

Fields in documented order

Position	Format	Meaning
1	Byte1('I')	Identifies the message as an insert message.
2	Int32 (TransactionId)	Xid of the transaction (only present for streamed transactions). This field is available since protocol version 2.
3	Int32 (Oid)	OID of the relation corresponding to the ID in the relation message.
4	Byte1('N')	Identifies the following TupleData message as a new tuple.
5	TupleData	TupleData message part representing the contents of new tuple.

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Complete source facts

fields

map[description:Identifies the message as an insert message. format:Byte1('I')], map[description:Xid of the transaction (only present for streamed transactions). This field is available since protocol version 2. format:Int32 (TransactionId)], map[description:OID of the relation corresponding to the ID in the relation message. format:Int32 (Oid)], map[description:Identifies the following TupleData message as a new tuple. format:Byte1('N')], map[description:TupleData message part representing the contents of new tuple. format:TupleData]

Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f