babylicious | 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 :
- #include <iostream>
- #include <winsock.h>
- #include "MYSQL\mysql.h"
- #include <string>
- #include <stdio.h>
- #define STRING_SIZE 50
- #define DROP_SAMPLE_TABLE "DROP TABLE IF EXISTS test_table"
- #define CREATE_SAMPLE_TABLE "CREATE TABLE test_table(col1 INT,\
- col2 VARCHAR(40),\
- col3 SMALLINT,\
- col4 TIMESTAMP)"
- #define INSERT_SAMPLE "INSERT INTO test_table(col1,col2,col3) VALUES(?,?,?)"
- using namespace std;
- int main()
- {
- MYSQL_STMT *stmt;
- MYSQL_BIND bind[3];
- my_bool is_null;
- my_ulonglong affected_rows;
- int param_count;
- short small_data;
- int int_data;
- char str_data[STRING_SIZE];
- unsigned long str_length;
- MYSQL *mysql;
- if(mysql_real_connect(mysql,"localhost","root","","facturation",0,NULL,0)){cout<< "all gud"<<endl;}
- mysql=mysql_init(NULL);
- stmt = mysql_stmt_init(mysql);
- if (!stmt)
- {
- fprintf(stderr, " mysql_stmt_init(), out of memory\n" );
- exit(0);
- }
- if (mysql_query(mysql, DROP_SAMPLE_TABLE))
- {
- fprintf(stderr, " DROP TABLE failed\n" );
- fprintf(stderr, " %s\n", mysql_error(mysql));
- exit(0);
- }
- if (mysql_query(mysql, CREATE_SAMPLE_TABLE))
- {
- fprintf(stderr, " CREATE TABLE failed\n" );
- fprintf(stderr, " %s\n", mysql_error(mysql));
- exit(0);
- }
- /* Prepare an INSERT query with 3 parameters */
- /* (the TIMESTAMP column is not named; it will */
- /* be set to the current date and time) */
- int a= mysql_stmt_prepare(stmt, INSERT_SAMPLE, strlen(INSERT_SAMPLE));
- if (!stmt)
- {
- fprintf(stderr, " mysql_prepare(), INSERT failed\n" );
- fprintf(stderr, " %s\n", mysql_error(mysql));
- exit(0);
- }
- fprintf(stdout, " prepare, INSERT successful\n" );
- /* Get the parameter count from the statement */
- param_count=mysql_stmt_param_count(stmt);
- fprintf(stdout, " total parameters in INSERT: %d\n", param_count);
- if (param_count != 3) /* validate parameter count */
- {
- fprintf(stderr, " invalid parameter count returned by MySQL\n" );
- exit(0);
- }
- /* Bind the data for all 3 parameters */
- /* INTEGER PARAM */
- /* This is a number type, so there is no need to specify buffer_length */
- bind[0].buffer_type= MYSQL_TYPE_LONG;
- bind[0].buffer= (char *)&int_data;
- bind[0].is_null= 0;
- bind[0].length= 0;
- /* STRING PARAM */
- bind[1].buffer_type= MYSQL_TYPE_VAR_STRING;
- bind[1].buffer= (char *)str_data;
- bind[1].buffer_length= STRING_SIZE;
- bind[1].is_null= 0;
- bind[1].length= &str_length;
- /* SMALLINT PARAM */
- bind[2].buffer_type= MYSQL_TYPE_SHORT;
- bind[2].buffer= (char *)&small_data;
- bind[2].is_null= &is_null;
- bind[2].length= 0;
- /* Bind the buffers */
- if (mysql_stmt_bind_param(stmt, bind))
- {
- fprintf(stderr, " mysql_bind_param() failed\n" );
- fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
- exit(0);
- }
- /* Specify the data values for the first row */
- int_data= 10; /* integer */
- strncpy(str_data, "MySQL", STRING_SIZE); /* string */
- str_length= strlen(str_data);
- /* INSERT SMALLINT data as NULL */
- is_null= 1;
- /* Execute the INSERT statement - 1*/
- if (mysql_stmt_execute(stmt))
- {
- fprintf(stderr, " mysql_execute(), 1 failed\n" );
- fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
- exit(0);
- }
- /* Get the total number of affected rows */
- affected_rows= mysql_stmt_affected_rows(stmt);
- fprintf(stdout, " total affected rows(insert 1): %ld\n", affected_rows);
- if (affected_rows != 1) /* validate affected rows */
- {
- fprintf(stderr, " invalid affected rows by MySQL\n" );
- exit(0);
- }
- /* Specify data values for second row, then re-execute the statement */
- int_data= 1000;
- strncpy(str_data, "The most popular open source database", STRING_SIZE);
- str_length= strlen(str_data);
- small_data= 1000; /* smallint */
- is_null= 0; /* reset */
- /* Execute the INSERT statement - 2*/
- if (mysql_stmt_execute(stmt))
- {
- fprintf(stderr, " mysql_execute, 2 failed\n" );
- fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
- exit(0);
- }
- /* Get the total rows affected */
- affected_rows= mysql_stmt_affected_rows(stmt);
- fprintf(stdout, " total affected rows(insert 2): %ld\n", affected_rows);
- if (affected_rows != 1) /* validate affected rows */
- {
- fprintf(stderr, " invalid affected rows by MySQL\n" );
- exit(0);
- }
- /* Close the statement */
- if (mysql_stmt_close(stmt))
- {
- fprintf(stderr, " failed while closing the statement\n" );
- fprintf(stderr, " %s\n", mysql_stmt_error(stmt));
- exit(0);
- }
- }
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