sqlite庫學習(5)sqlite插入

創建數據庫和表

const char* createTableSQL =

     " CREATE TABLE TESTTABLE(int_col INT,float_col REAL ,string_col TEXT,ADDRESS  char[50])";

準備工作

    char *zErrMsg = 0;

    int insertCount =10;

    const char* insertSQL = "INSERT INTO TESTTABLE(int_col,float_col,string_col,ADDRESS) VALUES(%d, %f, '%s', '%s');";

    const char* testString ="this is test.";

    const char* testAdd ="Is right?";

char sql[1024];

 (1)使用sqlite3_exec

   

 for (int i = 0; i < insertCount; ++i)

    {

         sprintf(sql, insertSQL, i, i*2.0, testString, testAdd);

         int rc = sqlite3_exec(conn, sql, 0, 0, &zErrMsg);

         if (rc != SQLITE_OK) {

             fprintf(stderr, "SQL error: %s\n", zErrMsg);

             sqlite3_free(zErrMsg);

         }

         else {

             fprintf(stdout, "Records created successfully\n");

         }

}

（2）使用sqlite3_prepare_v2

sqlite3_stmt * stmt2 = NULL;

    for (int i = 20; i < insertCount+20; ++i)

    {

         sprintf(sql, insertSQL, i, i*2.0, testString, testAdd);



         if (sqlite3_prepare_v2(conn, sql, strlen(sql), &stmt2, NULL) != SQLITE_OK)

         {

             if (stmt2)

                  sqlite3_finalize(stmt2);

             sqlite3_close(conn);

             return;

         }



         if (sqlite3_step(stmt2) != SQLITE_DONE)

         {

             sqlite3_finalize(stmt2);

             sqlite3_close(conn);

             return;

         }

         printf("Insert Succeed.\n");

    }

sqlite3_finalize(stmt2);