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Wiki / Protocol Messages

Execute

Execute is a frontend protocol message. Identifies the message as an Execute command.

Reading PG 18·Select a recorded version

Direction
Frontend → backend
First wire field
Byte1('E')
Field entries
4
Documented flow contexts
Extended Query; Function Call; COPY Operations
direction
F
manual path
/docs/18/protocol-message-formats.html
signature
Execute (F)

Definition PG 18

Byte1('E')

Identifies the message as an Execute command.

Int32

Length of message contents in bytes, including self.

String

The name of the portal to execute (an empty string selects the unnamed portal).

Int32

Maximum number of rows to return, if portal contains a query that returns rows (ignored otherwise). Zero denotes “no limit”.

Wire fields in documented order

PositionFormatMeaning
1Byte1('E')Identifies the message as an Execute command.
2Int32Length of message contents in bytes, including self.
3StringThe name of the portal to execute (an empty string selects the unnamed portal).
4Int32Maximum number of rows to return, if portal contains a query that returns rows (ignored otherwise). Zero denotes “ no limit ” .

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Complete source facts

fields

map[description:Identifies the message as an Execute command. format:Byte1('E')], map[description:Length of message contents in bytes, including self. format:Int32], map[description:The name of the portal to execute (an empty string selects the unnamed portal). format:String], map[description:Maximum number of rows to return, if portal contains a query that returns rows (ignored otherwise). Zero denotes “ no limit ” . format:Int32]

Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

Text language: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f