Why we use NULL in sqlite3_prepare_v2( )
Please any buddy tell me that why we write NULL nu below statement fifth parameter?

    if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK)

Thanks in advance.
Why we use NULL in sqlite3_prepare_v2( )
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Please any buddy tell me that why we write NULL nu below statement fifth parameter?

    if(sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK)

Thanks in advance.