从golang查询Postgres复合类型

时间:2017-01-22 08:21:52

标签: postgresql go gorp

所以我使用go-gorp来查询postgres,我似乎无法查询我的表中的复合类型是错误的。我想要的只是适当嵌套的JSON响应。我的postgres架构是:

CREATE TYPE PhoneType AS ENUM ('MOBILE', 'HOME', 'WORK');

CREATE TYPE PhoneNumber AS (
  "Number" VARCHAR,
  "Type" PhoneType
);

CREATE TABLE Person (
  "Id" SERIAL PRIMARY KEY NOT NULL,
  "Name" VARCHAR NOT NULL,
  "Email" VARCHAR,
  "Number" PhoneNumber[]
);

相应地,在golang,我有

const (
  MOBILE PhoneType = iota
  HOME
  WORK
)

type PhoneNumber struct {
  Number string
  Type   PhoneType
}

type Person struct {
  Id          int
  Name        string
  Email       string
  PhoneNumber        // not sure how to get array of phone numbers here
}

要查询,我使用go-gorp如下:

dbmap := &gorp.DbMap{Db: db, Dialect: gorp.PostgresDialect{}}
var data []Person
_, err := dbmap.Select(&data, "SELECT * FROM Person")

我得到的结果是格式

{
  "Id":
  "Name":
  "Email"
  "Number": "{\"(..., ...)\"}"
  "Type": 0
}

我期待的是:

{
  "Id":
  "Name":
  "Email":
  "PhoneNumber": [{
    "Number":
    "Type":
  }]
}

如何将此嵌套复合类型更改为go中声明的类型友好?

编辑:看起来像postres数组和复合类型成为go中的字符串。如何重新设计模式以获得类似的结果?

1 个答案:

答案 0 :(得分:0)

您的类型声明错误,请尝试以下示例:

type Phone struct {
   Number string
   Type   PhoneType
}

type Person struct {
  Id            int
  Name          string
  Email         string
  PhoneNumber   []Phone     
}