Source: cid.go in package github.com/jackc/pgtype

package pgtype

import (
	"database/sql/driver"
)

CID is PostgreSQL's Command Identifier type. When one does select cmin, cmax, * from some_table; it is the data type of the cmin and cmax hidden system columns. It is currently implemented as an unsigned four byte integer. Its definition can be found in src/include/c.h as CommandId in the PostgreSQL sources.

type CID pguint32

Set converts from src to dst. Note that as CID is not a general number type Set does not do automatic type conversion as other number types do.

func (dst *CID) Set(src interface{}) error {
	return (*pguint32)(dst).Set(src)
}

func (dst CID) Get() interface{} {
	return (pguint32)(dst).Get()
}

AssignTo assigns from src to dst. Note that as CID is not a general number type AssignTo does not do automatic type conversion as other number types do.

func (src *CID) AssignTo(dst interface{}) error {
	return (*pguint32)(src).AssignTo(dst)
}

func (dst *CID) DecodeText(ci *ConnInfo, src []byte) error {
	return (*pguint32)(dst).DecodeText(ci, src)
}

func (dst *CID) DecodeBinary(ci *ConnInfo, src []byte) error {
	return (*pguint32)(dst).DecodeBinary(ci, src)
}

func (src CID) EncodeText(ci *ConnInfo, buf []byte) ([]byte, error) {
	return (pguint32)(src).EncodeText(ci, buf)
}

func (src CID) EncodeBinary(ci *ConnInfo, buf []byte) ([]byte, error) {
	return (pguint32)(src).EncodeBinary(ci, buf)
}

Scan implements the database/sql Scanner interface.

func (dst *CID) Scan(src interface{}) error {
	return (*pguint32)(dst).Scan(src)
}

Value implements the database/sql/driver Valuer interface.

func (src CID) Value() (driver.Value, error) {
	return (pguint32)(src).Value()