Function query_str_variable

tests/mysql_client_test.c:17460–17487

}

static my_bool query_str_variable(MYSQL *con,
                                  const char *var_name,
                                  char *str,
                                  size_t len)
{
  MYSQL_RES *rs;
  MYSQL_ROW row;

  char query_buffer[MAX_TEST_QUERY_LENGTH];

  my_bool is_null;

  my_snprintf(query_buffer, sizeof (query_buffer),
              "SELECT %s", var_name);

  DIE_IF(mysql_query(con, query_buffer));
  DIE_UNLESS(rs= mysql_store_result(con));
  DIE_UNLESS(row= mysql_fetch_row(rs));

  is_null= row[0] == NULL;

  if (!is_null)
    my_snprintf(str, len, "%s", row[0]);

  mysql_free_result(rs);

  return is_null;
}

static my_bool query_int_variable(MYSQL *con,
                                  const char *var_name,