使用gorm的postgres中的“$ 1”或附近的golang语法错误

Question

I am trying to find multiple users based on their name. I am using gorm as follow:

err := db.Where("username IN ?", []string{"name1", "name2"}).Find(&users).Error

But the generated query is:

SELECT * FROM "users_customer"."user" WHERE (username IN 'name1','name2')

when the correct query should be:

SELECT * FROM "users_customer"."user" WHERE username IN ('name1','name2')

So the error pq: syntax error at or near "$1" is thrown. I use the same syntax as stated in the doc, which is db.Where("name IN?", []string{"jinzhu", "jinzhu 2"}).Find(&users) but don't know why in my case it doesn't work.

Answer 1

Gorm by default ad ' this at each side and it does not add brackets () .

You should add it manually like this:

    names := []string{"name1", "name2"}

    commaSep := "'" + strings.Join(names, "', '") + "'"
    err := db.Where("username IN (?)", commaSep).Find(&users).Error

You can run it here: https://go.dev/play/p/ox3H2gL1yek

OR

err := db.Where("username IN (?)", []string{"name1", "name2"}).Find(&users).Error