10#include <mysql/mysql.h>
14#include "TBufferFile.h"
19int main(
int argc,
char** argv) {
20 char *opt_host_name =
"202.122.37.69";
21 char *opt_user_name =
"maqm";
22 unsigned int opt_port_num = 3306;
23 char *opt_socket_name = NULL;
24 char *opt_db_name =
"offlinedb";
26 unsigned int opt_flags = 0;
31conn = mysql_init(NULL);
33 mysql_real_connect(conn, opt_host_name, opt_user_name, opt_password,
34 opt_db_name, opt_port_num, opt_socket_name, opt_flags);
35 printf(
"connect the database ok\n");
37unsigned long *lengths;
47 sprintf(stmt1,
"select TH1F_col from DedxSim where serno = 38");
50 if(mysql_real_query(conn, stmt1, strlen(stmt1)) != 0)
51 printf(
"query error\n");
52 res_set = mysql_store_result (conn);
53 mysql_field_seek (res_set, 0);
55 row = mysql_fetch_row (res_set);
56 lengths = mysql_fetch_lengths(res_set);
58 std::cout<<
"lengths["<<i<<
"]="<<lengths[i]<<std::endl;
66 TBufferFile rootBuffer2(TBufferFile::kRead,lengths[0], row[0], kFALSE);
69 tree.Streamer(rootBuffer2);
struct st_mysql_res MYSQL_RES
sprintf(cut,"kal_costheta0_em>-0.93&&kal_costheta0_em<0.93&&kal_pxy0_em>=0.05+%d*0.1&&kal_pxy0_em<0.15+%d*0.1&&NGch>=2", j, j)