db_get_result_mem_handle

warning

This function was added in SA-MP 0.3.7 R1 and will not work in earlier versions!

คำอธิบาย

Get memory handle for an SQLite query that was executed with db_query.

Name	Description
DB:db	The index of the query (returned by db_query).

ส่งคืน

Returns the memory handle for a specified query.

ตัวอย่าง

static DB:gDBConnectionHandle;

// ...

public OnGameModeInit()
{
    // ...

    // Create a connection to a database
    gDBConnectionHandle = db_open("example.db");

    // If connection to the database exists
    if (gDBConnectionHandle)
    {
        // Successfully created a connection to the database
        new DBResult:result_set = db_query("SELECT * FROM `examples`");
        print("Successfully created a connection to database \"example.db\".");
        if (result_set)
        {
            printf("Database connection memory handle: 0x%x", db_get_result_mem_handle(result_set));
            db_free_result(result_set);
        }
    }
    else
    {
        // Failed to create a connection to the database
        print("Failed to open a connection to database \"example.db\".");
    }

    // ...

    return 1;
}

public OnGameModeExit()
{
    // Close the connection to the database if connection is open
    if (db_close(gDBConnectionHandle))
    {
        // Extra cleanup
        gDBConnectionHandle = DB:0;
    }

    // ...

    return 1;
}

บันทึก

warning

Using an invalid handle other than zero will crash your server! Get a valid database connection handle by using db_query.

ฟังก์ชั่นที่เกี่ยวข้องกัน

• db_open: Open a connection to an SQLite database
• db_close: Close the connection to an SQLite database
• db_query: Query an SQLite database
• db_free_result: Free result memory from a db_query
• db_num_rows: Get the number of rows in a result
• db_next_row: Move to the next row
• db_num_fields: Get the number of fields in a result
• db_field_name: Returns the name of a field at a particular index
• db_get_field: Get content of field with specified ID from current result row
• db_get_field_assoc: Get content of field with specified name from current result row
• db_get_field_int: Get content of field as an integer with specified ID from current result row
• db_get_field_assoc_int: Get content of field as an integer with specified name from current result row
• db_get_field_float: Get content of field as a float with specified ID from current result row
• db_get_field_assoc_float: Get content of field as a float with specified name from current result row
• db_get_mem_handle: Get memory handle for an SQLite database that was opened with db_open.
• db_get_result_mem_handle: Get memory handle for an SQLite query that was executed with db_query.
• db_debug_openfiles
• db_debug_openresults