mysql et c++ sous codeblocks erreur o niveau de insert

mysql et c++ sous codeblocks erreur o niveau de insert - C++ - Programmation

Marsh Posté le 06-05-2009 à 09:29:36    

Bonjour voici mon code  
 

Code :
  1. #include <iostream>
  2. #include "Facturation.h"
  3. #include <string>
  4. #include <winsock.h>
  5. #include "MYSQL\mysql.h"
  8. #define def_nom_hote NULL // hote auquel se connecte le prog localhost
  9. #define def_nom_utilisateur NULL // par defaut le mien
  10. #define def_motdepasse NULL
  12. int c= 11;
  14. using namespace std;
  16. int main()
  17. {
  20. MYSQL *ptconn;
  22.   ptconn=mysql_init(NULL);
  24. if(mysql_real_connect(ptconn,"localhost","root","","facturation",0,NULL,0)){cout<< "all gud"<<endl;} else{ cout<<"toto"<<endl;}
  27.      int a=11;
  28.   string b="today";
  29.     int  c=1;
  30. string d="achatdetomate ";
  31.   float e=50.7;
  32.   string f="today";
  33.   float g=21.4;
  37. if( mysql_query(ptconn, "INSERT INTO facture(numfact,date) VALUES ('c','b')" )==0)
  38. {  cout<<"gud insert"<<endl;}
  39. else
  40. { cout<<"toto1"<<endl;cout << mysql_error(ptconn) << endl;}
  42.    if( mysql_query(ptconn, " SELECT * from facture" )==0)
  43.      {  cout<<"gud select"<<endl; }
  44.    else{ cout<<" toto"<<endl;
  45.    cout << mysql_error(ptconn) << endl;}
  48. MYSQL_RES *result = NULL;
  50. result = mysql_use_result(ptconn);
  52. if(result == NULL)
  53. {
  54. cout << "Résultat vide" << endl;
  55. cout << mysql_error(ptconn) << endl;
  56. }
  57. //On récupère le nombre de champs
  59. unsigned int nb_champs = mysql_num_fields(result);
  60. if(nb_champs != 3) cout << "C'est bizarre" << endl;
  61. // lecture du resultat
  62. MYSQL_ROW row;
  64. while ((row = mysql_fetch_row(result)))
  65. {
  66. cout << "ID : " << row[0] << ", Nom : " << row[1]
  67. << ", Prenom : " << row[2] << endl;
  68. }
  70. mysql_free_result(result);
  72. mysql_close(ptconn);
  75.     return 0;
  77. }


 
Le problème se situe au niveau de  
if( mysql_query(ptconn, "INSERT INTO facture(numfact,date) VALUES ('c','b')" )==0)
J'insere "c" et "b" et non leurs valeurs.
Je ne vois pas comment faire

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Marsh Posté le 06-05-2009 à 09:29:36   

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Marsh Posté le 06-05-2009 à 10:52:14    

babylicious a écrit :

J'insere "c" et "b" et non leurs valeurs.


c'est exactement ce que ton code demande.
mysql_query exécute la requête passée en paramètre. A toi de passer une requête valide.
Au passage, renseigne-toi sur les requêtes préparées (prepared statements).


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Can't buy what I want because it's free -
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Marsh Posté le 24-05-2009 à 23:22:49    

Voici le code donné pour étudier les prepared statement.Le nouveau  est que j'ai une erreur mysql_stmt_init@4 et ce pour tous les prepared statements que j'utilise.Je ne sais pas quoi faire car J'ai bien rajouté libmysqlclient.a

Code :
  1. #include <iostream>
  2. #include <winsock.h>
  3. #include "MYSQL\mysql.h"
  4. #include <string>
  6. #include <stdio.h>
  7. #define STRING_SIZE 50
  9. #define DROP_SAMPLE_TABLE "DROP TABLE IF EXISTS test_table"
  10. #define CREATE_SAMPLE_TABLE "CREATE TABLE test_table(col1 INT,\
  11.                                                  col2 VARCHAR(40),\
  12.                                                  col3 SMALLINT,\
  13.                                                  col4 TIMESTAMP)"
  14. #define INSERT_SAMPLE "INSERT INTO test_table(col1,col2,col3) VALUES(?,?,?)"
  15. using namespace std;
  17. int main()
  18. {
  20. MYSQL_STMT    *stmt;
  21. MYSQL_BIND    bind[3];
  22. my_bool       is_null;
  23. my_ulonglong  affected_rows;
  24. int           param_count;
  25. short         small_data;
  26. int           int_data;
  27. char          str_data[STRING_SIZE];
  28. unsigned long str_length;
  30. MYSQL *mysql;
  31. if(mysql_real_connect(mysql,"localhost","root","","facturation",0,NULL,0)){cout<< "all gud"<<endl;}
  33.   mysql=mysql_init(NULL);
  35.   stmt = mysql_stmt_init(mysql);
  37.       if (!stmt)
  38. {
  39.   fprintf(stderr, " mysql_stmt_init(), out of memory\n" );
  40.   exit(0);
  41. }
  43. if (mysql_query(mysql, DROP_SAMPLE_TABLE))
  44. {
  45.   fprintf(stderr, " DROP TABLE failed\n" );
  46.   fprintf(stderr, " %s\n", mysql_error(mysql));
  47.   exit(0);
  48. }
  50. if (mysql_query(mysql, CREATE_SAMPLE_TABLE))
  51. {
  52.   fprintf(stderr, " CREATE TABLE failed\n" );
  53.   fprintf(stderr, " %s\n", mysql_error(mysql));
  54.   exit(0);
  55. }
  57. /* Prepare an INSERT query with 3 parameters */
  58. /* (the TIMESTAMP column is not named; it will */
  59. /* be set to the current date and time) */
  60. int a= mysql_stmt_prepare(stmt, INSERT_SAMPLE, strlen(INSERT_SAMPLE));
  62. if (!stmt)
  63. {
  64.   fprintf(stderr, " mysql_prepare(), INSERT failed\n" );
  65.   fprintf(stderr, " %s\n", mysql_error(mysql));
  66.   exit(0);
  67. }
  68. fprintf(stdout, " prepare, INSERT successful\n" );
  70. /* Get the parameter count from the statement */
  71. param_count=mysql_stmt_param_count(stmt);
  72. fprintf(stdout, " total parameters in INSERT: %d\n", param_count);
  74. if (param_count != 3) /* validate parameter count */
  75. {
  76.   fprintf(stderr, " invalid parameter count returned by MySQL\n" );
  77.   exit(0);
  78. }
  80. /* Bind the data for all 3 parameters */
  82. /* INTEGER PARAM */
  83. /* This is a number type, so there is no need to specify buffer_length */
  84. bind[0].buffer_type= MYSQL_TYPE_LONG;
  85. bind[0].buffer= (char *)&int_data;
  86. bind[0].is_null= 0;
  87. bind[0].length= 0;
  89. /* STRING PARAM */
  90. bind[1].buffer_type= MYSQL_TYPE_VAR_STRING;
  91. bind[1].buffer= (char *)str_data;
  92. bind[1].buffer_length= STRING_SIZE;
  93. bind[1].is_null= 0;
  94. bind[1].length= &str_length;
  96. /* SMALLINT PARAM */
  97. bind[2].buffer_type= MYSQL_TYPE_SHORT;
  98. bind[2].buffer= (char *)&small_data;
  99. bind[2].is_null= &is_null;
  100. bind[2].length= 0;
  102. /* Bind the buffers */
  103. if (mysql_stmt_bind_param(stmt, bind))
  104. {
  105.   fprintf(stderr, " mysql_bind_param() failed\n" );
  106.   fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
  107.   exit(0);
  108. }
  110. /* Specify the data values for the first row */
  111. int_data= 10;             /* integer */
  112. strncpy(str_data, "MySQL", STRING_SIZE); /* string  */
  113. str_length= strlen(str_data);
  115. /* INSERT SMALLINT data as NULL */
  116. is_null= 1;
  118. /* Execute the INSERT statement - 1*/
  119. if (mysql_stmt_execute(stmt))
  120. {
  121.   fprintf(stderr, " mysql_execute(), 1 failed\n" );
  122.   fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
  123.   exit(0);
  124. }
  126. /* Get the total number of affected rows */
  127. affected_rows= mysql_stmt_affected_rows(stmt);
  128. fprintf(stdout, " total affected rows(insert 1): %ld\n", affected_rows);
  130. if (affected_rows != 1) /* validate affected rows */
  131. {
  132.   fprintf(stderr, " invalid affected rows by MySQL\n" );
  133.   exit(0);
  134. }
  136. /* Specify data values for second row, then re-execute the statement */
  137. int_data= 1000;
  138. strncpy(str_data, "The most popular open source database", STRING_SIZE);
  139. str_length= strlen(str_data);
  140. small_data= 1000;         /* smallint */
  141. is_null= 0;               /* reset */
  143. /* Execute the INSERT statement - 2*/
  144. if (mysql_stmt_execute(stmt))
  145. {
  146.   fprintf(stderr, " mysql_execute, 2 failed\n" );
  147.   fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
  148.   exit(0);
  149. }
  151. /* Get the total rows affected */
  152. affected_rows= mysql_stmt_affected_rows(stmt);
  153. fprintf(stdout, " total affected rows(insert 2): %ld\n", affected_rows);
  155. if (affected_rows != 1) /* validate affected rows */
  156. {
  157.   fprintf(stderr, " invalid affected rows by MySQL\n" );
  158.   exit(0);
  159. }
  161. /* Close the statement */
  162. if (mysql_stmt_close(stmt))
  163. {
  164.   fprintf(stderr, " failed while closing the statement\n" );
  165.   fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
  166.   exit(0);
  167. }
  169. }

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Marsh Posté le 25-05-2009 à 07:43:10    

Problème de version de mysql? C'est quoi l'erreur exacte? A la compilation ou  l'exécution?


Message édité par skeye le 25-05-2009 à 07:44:06

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Can't buy what I want because it's free -
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Marsh Posté le 25-05-2009 à 08:55:55    

A LA COMPILATION
undefined reference to mysql_stmt_init@4
undefined reference to mysql_stmt_prepared@12
undefined reference to mysql_stmt_param_count@4
undefined reference to mysql_stmt_bind_param@8
undefined reference to mysql_stmt_error@4
undefined reference to mysql_stmt_execute@4
undefined reference to mysql_stmt_affexted_rows@4
 
voila les seuls erreurs que j'ai a la compilation

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