#include "proxysql.h" #include "cpp.h" #define QUERY1 "SELECT ? + ? + ?" MYSQL *mysql; MYSQL_STMT *stmt; uint32_t statement_id; uint16_t num_params; uint16_t num_columns; uint16_t warning_count; int run_stmt(MYSQL_STMT *stmt, int int_data) { MYSQL_BIND bind[3]; MYSQL_RES *prepare_meta_result; bind[0].buffer_type= MYSQL_TYPE_LONG; bind[0].buffer= (char *)&int_data; bind[0].is_null= 0; bind[0].length= 0; bind[1].buffer_type= MYSQL_TYPE_LONG; bind[1].buffer= (char *)&int_data; bind[1].is_null= 0; bind[1].length= 0; bind[2].buffer_type= MYSQL_TYPE_LONG; bind[2].buffer= (char *)&int_data; bind[2].is_null= 0; bind[2].length= 0; if (mysql_stmt_bind_param(stmt, bind)) { fprintf(stderr, " mysql_stmt_bind_param() failed\n"); fprintf(stderr, " %s\n", mysql_stmt_error(stmt)); exit(EXIT_FAILURE); } prepare_meta_result = mysql_stmt_result_metadata(stmt); // FIXME: no error check if (mysql_stmt_execute(stmt)) { fprintf(stderr, " mysql_stmt_execute(), 1 failed\n"); fprintf(stderr, " %s\n", mysql_stmt_error(stmt)); exit(EXIT_FAILURE); } // memset(bind, 0, sizeof(bind)); if (mysql_stmt_store_result(stmt)) { fprintf(stderr, " mysql_stmt_store_result() failed\n"); fprintf(stderr, " %s\n", mysql_stmt_error(stmt)); exit(EXIT_FAILURE); } mysql_free_result(prepare_meta_result); return 0; } int main() { std::mt19937 mt_rand(time(0)); mysql = mysql_init(NULL); if (!mysql_real_connect(mysql,"127.0.0.1","msandbox","msandbox","test",6033,NULL,0)) { //if (!mysql_real_connect(mysql,"127.0.0.1","root","","test",3306,NULL,0)) { fprintf(stderr, "Failed to connect to database: Error: %s\n", mysql_error(mysql)); exit(EXIT_FAILURE); } stmt = mysql_stmt_init(mysql); if (!stmt) { fprintf(stderr, " mysql_stmt_init(), out of memory\n"); exit(EXIT_FAILURE); } if (mysql_stmt_prepare(stmt, QUERY1, strlen(QUERY1))) { fprintf(stderr, " mysql_stmt_prepare(), failed: %d, %s\n" , mysql_errno(mysql), mysql_stmt_error(stmt)); exit(EXIT_FAILURE); } // param_count= mysql_stmt_param_count(stmt); // fprintf(stdout, " total parameters in Query1 : %d\n", param_count); statement_id=stmt->stmt_id; num_params=stmt->param_count; num_columns=stmt->field_count; warning_count=stmt->upsert_status.warning_count; fprintf(stdout, "statement_id=%d , columns=%d , params=%d , warnings=%d\n", statement_id, num_columns, num_params, warning_count); run_stmt(stmt,(uint32_t)mt_rand()); return 0; }