GoLang复制命令准备好的语句不起作用

I am writing a simple Golang based Redshift DataLoader. I have to use Redshift Copy From S3 command as Prepared statement so that I can pass credentials as part of an argument.

I see lib/pq is not parsing the SQL template correctly. Any thoughts would be appreciated

    COPY_FROM_S3 = `
    COPY {{.stageTable}}
    FROM $1
    WITH CREDENTIALS AS $2
    DELIMITER $3
    IGNOREBLANKLINES ACCEPTINVCHARS BLANKSASNULL
    EMPTYASNULL ACCEPTANYDATE ESCAPE MAXERROR 50
    STATUPDATE ON
`
  stmt , _ := redshiftDB.Prepare(COPY_FROM_S3)
  stmt.Exec(s3File, awsCreds, delimter)

Getting Syntax error

panic: pq: syntax error at or near "$1"

goroutine 1 [running]:

lib/pq is indeed parsing it correctly, the problem is you're creating an invalid query template, first: {{.stageTable}} is for formal templates, second: dollars ($1) notation doesn't work for table names in FROM statement and not sure if the other **$**s will work