Execute sql prepared statement with slice

I've wrote an function (In Go, of course) that inserting map[string]interface{} to mysql via this library.

Explanation of the code below:

1. The functions receives string called table and map[string]interface{} called data.
2. I separate the data to keys (variable called columns) and values (variable called values).
3. I generate from the columns variable called column_text that will look like this: first_name, last_name, birth_day, date_added
4. I generate from the values variable called variable_text that will look like this: ?, ?, ?, ?
5. I open mysql connection: db, err := sql.Open("mysql", "user:pass@/database")
6. I create prepared statement: stmt, err := db.Prepare("INSERT INTO " + table + " ( " + columns_text + " ) VALUES ( " + values_text + " )")
7. I execute the prepare statement. but I have a problem. the number of the columns and values changes all the time, and the stmt.Exec() command can't receive an slice (Array) like this: stmt.Exec(values), only the values alone like this: stmt.Exec(values[0], values[1], values[2]...)

The question:

I'm coming from PHP, where PDO::Statement could receive an array when executing.
How can I execute the statement with the slice (Array)? (If I can do it with different library, please write the name of the library and how to use it, thank you!)

The code:

func insertToDB(table string, data map[string]interface{}) {
columns := make([]interface{}, 0, len(data))
values := make([]interface{}, 0, len(data))
for  key, _ := range data {
columns = append(columns, key)
values = append(values, data[key])
}
columns_text := ""
i := 0
of := len(data)
for i < of {
column := columns[i].(string)
if i == 0 {
columns_text = column
} else {
columns_text = columns_text + ", " + column
}
i++
}
fmt.Println(columns_text + " = " + table)
values_text := ""
i = 0
for i < of {
if i == 0 {
values_text = "?"
} else {
values_text = values_text + ", ?"
}
i++
}
fmt.Println(values_text)
fmt.Println(values)
fmt.Println(data)
db, err := sql.Open("mysql", "root:root@/bacafe")
if err != nil {
return -1, err
}
defer db.Close()
stmtIns, err := db.Prepare("INSERT INTO " + table + " ( " + columns_text + " ) VALUES ( " +  values_text + " )")
if err != nil {
return -1, err
}
defer stmtIns.Close() // Close the statement when we leave main() / the program terminates
result, err := stmtIns.Exec(values...)
if err != nil {
return -1, err
} else {
insertedID, err := result.LastInsertId()
if err != nil {
return -1, err
} else {
return int(insertedID), nil
}
}
}

EDIT: I've edited the function above and it works perfectly now.

Thank you!

You are on the right track however Stmt.Exec takes args ...interface{}, so for your specific example you need to change 2 things:

......
values := make([]interface{}, 0, len(data))
......
//adding ... expands the values, think of it like func.apply(this, array-of-values) in 
// javascript, in a way.
_, err = stmtIns.Exec(values...)