I'm using golang, go_reform, PostgreSQL. What i want to do is a REST search utility, and all went fine until I faced with conditional search query. "Conditional" here means I have 10 columns in a table to search in, and there may be ton of combinations so I can't handle them all separately. What i need is a query builder, but I have no understanding how can I implement this in Go. For now I have an idea like this, but it seems not really efficient

type Query struct {
    Id               *int64
    FirstName        *string
    MiddleName       *string
    LastName         *string
    AreaId           *int64
    Birthday         *time.Time
}

func (table *Query) Find() (*User) {
    if table.Id != nil {
        idstr := fmt.Sprintf("WHERE Id = %d AND ", table.Id)
    }
    else idstr := "WHERE "
    }
    if table.FirstName != "" {
        firststr := fmt.Sprintf("FirstName = %s AND", table.FirstName)
    }
    else firststr := ""
}//and so on

Find()Query

EDIT: By the way, making my Google search query more accurate, i found a bunch of things related to my problem, probably i will try to use it now. For those who interested too: old go playground example

gorp package (snippets thing sounds very promising)