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db_get_mem_handle

warning

This $function starts with a lowercase letter.

warning

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

Description

The function gets the memory handle for a SQLite database connection that was opened with db_open].

Name	Description
DB:db	The index of the database connection (returned by db_open).

Returns

Returns the memory handle of the database connection handle.

Examples

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
        print("Successfully created a connection to database \"example.db\".");
        printf("Database connection memory handle: 0x%x", db_get_mem_handle(gDBConnectionHandle));
    }
    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;
}

Notes

warning

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

Related Functions

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_result_mem_handle: Get memory handle for an SQLite query that was executed with db_query.
db_debug_openfiles: The function gets the number of open database connections for debugging purposes.
db_debug_openresults: The function gets the number of open database results.