func prepare(db *DB, cn *pool.Conn, q string) (*Stmt, error) {
name := cn.NextId()
writeParseDescribeSyncMsg(cn.Wr, name, q)
if err := cn.Wr.Flush(); err != nil {
db.freeConn(cn, err)
return nil, err
}
columns, err := readParseDescribeSync(cn)
if err != nil {
db.freeConn(cn, err)
return nil, err
}
stmt := &Stmt{
db: db,
_cn: cn,
name: name,
columns: columns,
}
return stmt, nil
}
