MYSQL开发性能研究之批量插入数据的优化方法

INSERT INTO TBL_TEST (id) VALUES(1);

INSERT INTO TBL_TEST (id) VALUES (1), (2), (3)

--建表语句
CREATE TABLE tbl_test 
(
  pri_key varchar(30), 
  nor_char char(30), 
  max_num DECIMAL(8,0), 
  long_num DECIMAL(12, 0), 
  rec_upd_ts TIMESTAMP
);

#include <string.h>
#include <iostream>
#include <mysql.h>
#include <sys/time.h>
#include <sstream>
#include <vector>
 
using namespace std;
 
#define STRING_LEN 30
  
char    pri_key            [STRING_LEN]= "123456"; 
char    nor_char           [STRING_LEN]= "abcabc"; 
char    rec_upd_ts          [STRING_LEN]= "NOW()"; 
 
bool SubTimeval(timeval &result, timeval &begin, timeval &end)
{
  if ( begin.tv_sec>end.tv_sec ) return false;
 
  if ( (begin.tv_sec == end.tv_sec) && (begin.tv_usec > end.tv_usec) )  
    return  false;
 
  result.tv_sec = ( end.tv_sec - begin.tv_sec );  
  result.tv_usec = ( end.tv_usec - begin.tv_usec );  
 
  if (result.tv_usec<0) {
    result.tv_sec--;
    result.tv_usec+=1000000;} 
  return true;
}
 
int main(int argc, char ** argv)
{
  INT32 ret = 0;
  char errmsg[200] = {0};
  int sqlCode = 0;
 
  timeval tBegin, tEnd, tDiff;
   
  const char* precompile_statment2 = "INSERT INTO `tbl_test`( pri_key, nor_char, max_num, long_num, rec_upd_ts) VALUES(?, ?, ?, ?, ?)";
   
  MYSQL conn;
  mysql_init(&conn);
   
  if (mysql_real_connect(&conn, "127.0.0.1", "dba", "abcdefg", "TESTDB", 3306, NULL, 0) == NULL)
  {
    fprintf(stderr, " mysql_real_connect, 2 failed\n");
    exit(0);
  }
   
  MYSQL_STMT  *stmt = mysql_stmt_init(&conn);
  if (!stmt)
  {
   fprintf(stderr, " mysql_stmt_init, 2 failed\n");
   fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
   exit(0);
  }
   
  if (mysql_stmt_prepare(stmt, precompile_statment2, strlen(precompile_statment2)))
  {
   fprintf(stderr, " mysql_stmt_prepare, 2 failed\n");
   fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
   exit(0);
  }
   
  int i = 0; 
  int max_num = 3;
  const int FIELD_NUM = 5;
  while (i < max_num)
  {
    //MYSQL_BIND  bind[196] = {0};
    MYSQL_BIND  bind[FIELD_NUM];
    memset(bind, 0, FIELD_NUM * sizeof(MYSQL_BIND));
   
    unsigned long str_length = strlen(pri_key);
    bind[0].buffer_type  = MYSQL_TYPE_STRING;
    bind[0].buffer    = (char *)pri_key;
    bind[0].buffer_length = STRING_LEN;
    bind[0].is_null    = 0;
    bind[0].length    = &str_length;
     
    unsigned long str_length_nor = strlen(nor_char);
    bind[1].buffer_type  = MYSQL_TYPE_STRING;
    bind[1].buffer    = (char *)nor_char;
    bind[1].buffer_length = STRING_LEN;
    bind[1].is_null    = 0;
    bind[1].length    = &str_length_nor;
     
    bind[2].buffer_type  = MYSQL_TYPE_LONG;
    bind[2].buffer    = (char*)&max_num;
    bind[2].is_null    = 0;
    bind[2].length    = 0;
     
    bind[3].buffer_type  = MYSQL_TYPE_LONG;
    bind[3].buffer    = (char*)&max_num;
    bind[3].is_null    = 0;
    bind[3].length    = 0;
     
    MYSQL_TIME ts;
    ts.year= 2002;
    ts.month= 02;
    ts.day= 03;
    ts.hour= 10;
    ts.minute= 45;
    ts.second= 20;
     
    unsigned long str_length_time = strlen(rec_upd_ts);
    bind[4].buffer_type  = MYSQL_TYPE_TIMESTAMP;
    bind[4].buffer    = (char *)&ts;
    bind[4].is_null    = 0;
    bind[4].length    = 0;
     
    if (mysql_stmt_bind_param(stmt, bind))
    {
      fprintf(stderr, " mysql_stmt_bind_param, 2 failed\n");
      fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
      exit(0);
    }
     
    cout << "before execute\n";
    if (mysql_stmt_execute(stmt))
    {
     fprintf(stderr, " mysql_stmt_execute, 2 failed\n");
     fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
     exit(0);
    }
    cout << "after execute\n";
     
    i++;
  }
   
  mysql_commit(&conn);
   
  mysql_stmt_close(stmt);
 
  return 0;  
}