Gorm Postgres数据库DSN设置TimeZone可能造成的异常情况

Postgres数据库中DSN设置timezone和TimeZone可能造成的异常情况

package main

import (
    "fmt"
    "gorm.io/driver/postgres"
    "gorm.io/gorm"
    "gorm.io/gorm/logger"
    "log"
    "net/url"
)

func main() {
    dsn := url.URL{
        Scheme: "postgres",
        User:   url.UserPassword("postgres", "postgres"),
        Host:   "127.0.0.1:5432",
        Path:   "test",
    }
    query := dsn.Query()
    query.Set("TimeZone", "Asia/Shanghai")
    query.Set("search_path", "public")
    dsn.RawQuery = query.Encode()
    dstStr := dsn.String()
    fmt.Println(dstStr)
    dialector := postgres.New(postgres.Config{
        DSN:                  dstStr,
        PreferSimpleProtocol: true,
    })
    cfg := gorm.Config{
        SkipDefaultTransaction:                   true,
        Logger:                                   logger.Default.LogMode(logger.Silent),
        DisableForeignKeyConstraintWhenMigrating: true,
    }

    db, _ := gorm.Open(dialector, &cfg)

    // 查询当前会话的时区设置
    var timeZone string
    err := db.Raw("SHOW TIMEZONE").Scan(&timeZone).Error
    if err != nil {
        log.Fatal("失败", err)
    }
    fmt.Println("Current session timezone:", timeZone)
}

在 这种情况下，连接数据库之后执行 SHOW TIMEZONE。查询出来当前时区有一定的概率会出现Asia%2FShanghai

PS C:\coder\Go\src\utils go build .\dsn.go;.\dsn.exe
postgres://postgres:postgres@127.0.0.1:5432/test?TimeZone=Asia%2FShanghai&search_path=public
Current session timezone: ASIA%2FSHANGHAI

PS C:\coder\Go\src\utils go build .\dsn.go;.\dsn.exe
postgres://postgres:postgres@127.0.0.1:5432/test?TimeZone=Asia%2FShanghai&search_path=public
Current session timezone: ASIA%2FSHANGHAI

PS C:\coder\Go\src\utils go build .\dsn.go;.\dsn.exe
postgres://postgres:postgres@127.0.0.1:5432/test?TimeZone=Asia%2FShanghai&search_path=public
Current session timezone: ASIA%2FSHANGHAI

PS C:\coder\Go\src\utils go build .\dsn.go;.\dsn.exe
postgres://postgres:postgres@127.0.0.1:5432/datestta_house?TimeZone=Asia%2FShanghai&search_path=public
Current session timezone: Asia/Shanghai

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