oracle - 当使用带有 oracle 驱动程序的数据库/sql 包时，LastInsertId 返回 0

Question

我正在使用带有 oracle 驱动程序(“gopkg.in/rana/ora.v4”)的 database/sql 包，当我插入数据时，它的 LastInsertId 方法返回 0，而数据已成功插入。 附加代码。

package main

import (
    “database/sql”
    “fmt”

    _ "gopkg.in/rana/ora.v4"
)

func main() {
    conn, err = sql.Open(“ora”, 
    username+"/"+password+"@"+host+":"+port+"/"+sid)
    query := “INSERT INTO Table (C2) VALUES (:C2)”
    result, err := conn.Exec(query, “Test”)
    if err!= nil {
        panic(err)
    }
    lastId := result.LastInsertId() // returning 0
    fmt.Println(lastId)
}

请告诉我为什么会这样？

Answer 1

来自 the documentation (强调):

LastInsertId

The database/sql package provides a LastInsertId method to return the last inserted row's id. Oracle does not provide such functionality, but if you append ... RETURNING col /*LastInsertId*/ to your SQL, then it will be presented as LastInsertId. Note that you have to mark with a /*LastInsertId*/ (case insensitive) your RETURNING part, to allow ora to return the last column as LastInsertId(). That column must fit in int64, though!