Go中的Postgres列表参数（使用数据库/ SQL和PQ）

Question

I'm trying to write a query that takes a list parameter (ie, a single parameter which is a list of values). It appears that this is at least sometimes possible in Postgres (https://stackoverflow.com/a/10829760/836390). What I want is something like this:

rows, err := db.Query("SELECT * FROM table WHERE id in $1", []int{1, 2, 3})

However, when I execute this using the pq driver, I get an error:

sql: converting Exec argument #0's type: unsupported type []int, a slice

Is this simply not supported in pq yet, or is this not supported in database/sql, or not in Postgres at all, or what? Thanks!

Answer 1

You can use pq.Array with slice parameters nowadays. So the query would look like:

rows, err := db.Query("SELECT * FROM table WHERE id in $1", pq.Array([]int{1, 2, 3}))