package db

import "strings"

// Placeholders generates a SQL placeholder string for IN clauses (e.g. "?, ?, ?").
func Placeholders(n int) string {
	if n == 0 {
		return ""
	}
	ph := make([]string, n)
	for i := range ph {
		ph[i] = "?"
	}
	return strings.Join(ph, ", ")
}