CopyData
CopyData is a bidirectional protocol message. Identifies the message as COPY data.
当前阅读 PG 18·选择有来源记录的版本
此版本暂无所选语言的定义，以下显示原始英文内容。
- Direction
- Frontend ↔ backend
- First wire field
- Byte1('d')
- Field entries
- 3
- Documented flow contexts
- COPY Operations
- direction
- F & B
- manual path
- /docs/18/protocol-message-formats.html
- signature
- CopyData (F & B)
版本定义 PG 18
-
- Byte1('d')
-
Identifies the message as
COPYdata. - Int32
-
Length of message contents in bytes, including self.
- Byte
n -
Data that forms part of a
COPYdata stream. Messages sent from the backend will always correspond to single data rows, but messages sent by frontends might divide the data stream arbitrarily.
Wire fields in documented order
| Position | Format | Meaning |
|---|---|---|
| 1 | Byte1('d') | Identifies the message as COPY data. |
| 2 | Int32 | Length of message contents in bytes, including self. |
| 3 | Byte n | Data that forms part of a COPY data stream. Messages sent from the backend will always correspond to single data rows, but messages sent by frontends might divide the data stream arbitrarily. |
比较版本
完整来源事实
fields
map[description:Identifies the message as COPY data. format:Byte1('d')], map[description:Length of message contents in bytes, including self. format:Int32], map[description:Data that forms part of a COPY data stream. Messages sent from the backend will always correspond to single data rows, but messages sent by frontends might divide the data stream arbitrarily. format:Byte n]来源引用
定义来源
center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f
正文语言: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f