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mysql> use 4tf;
Database changed
mysql> show tables;
+---------------+
| Tables_in_4tf |
+---------------+
| dane_4tf |
+---------------+
1 row in set (0.00 sec)

mysql> select * from dane_4tf;
+----+-----------+---------------+-------------+----------------+------------+----------------+--------+
| ID | imie | nazwisko | ulica | miasto | data_ur | miejsce_pracy | pensja |
+----+-----------+---------------+-------------+----------------+------------+----------------+--------+
| 1 | Kamil | Łaski | Stasiówka | Łomazy | 1990-02-02 | Biała Podlaska | 10000 |
| 2 | Justyna | Siemiątkowska | Warszawska | Biała Podlaska | 1992-04-03 | Warszawa | 9000 |
| 3 | Łukasz | Szymczuk | Nowa | Rososz | 1992-01-01 | Kielce | 8000 |
| 4 | Rafał | Stobiecki | Warszawska | Biała Podlaska | 1992-01-03 | Szczecin | 7000 |
| 5 | Paweł | Koprianiuk | słoneczna | Rososz | 1992-07-07 | Parczew | 6000 |
| 6 | Grzegorz | Mackiewicz | Brzeska | Biała Podlaska | 1993-01-06 | Lublin | 5000 |
| 7 | Marcin | Dżyg | Janowska | Biała Podlaska | 1994-09-12 | Toruń | 4000 |
| 8 | Sebastian | Lewkowicz | Lipowa | Biała Podlaska | 1994-03-21 | Kraków | 3000 |
| 9 | Grzegorz | Sidoruk | Narutowicza | Warszawa | 1993-02-22 | Gdynia | 2000 |
+----+-----------+---------------+-------------+----------------+------------+----------------+--------+
9 rows in set (0.02 sec)

mysql> select imie, nazwisko, year(now())-year(data_ur) as wiek from dane_4tf where year(now())- year(data_ur)=18;
Empty set (0.00 sec)

mysql> select imie, nazwisko, year(now())-year(data_ur) as wiek from dane_4tf where year(now())- year(data_ur)=19;
+-----------+-----------+------+
| imie | nazwisko | wiek |
+-----------+-----------+------+
| Marcin | Dżyg | 19 |
| Sebastian | Lewkowicz | 19 |
+-----------+-----------+------+
2 rows in set (0.00 sec)

mysql> select curdate;
ERROR 1054 (42S22): Unknown column 'curdate' in 'field list'
mysql> select curdate();
+------------+
| curdate() |
+------------+
| 2013-09-26 |
+------------+
1 row in set (0.00 sec)

mysql> select imie, nazwisko, floor(to_days(curdate())-to_date(data_ur))/356 as wiek from dane_4tf;
ERROR 1305 (42000): FUNCTION 4tf.to_date does not exist
mysql> select imie, nazwisko, floor(to_days(curdate())-to_date(data_ur))/356 as wiek from dane_4tf;
ERROR 1305 (42000): FUNCTION 4tf.to_date does not exist
mysql> select imie, nazwisko, floor(to_days(curdate())-to_days(data_ur))/356 as wiek from dane_4tf;
+-----------+---------------+---------+
| imie | nazwisko | wiek |
+-----------+---------------+---------+
| Kamil | Łaski | 24.2612 |
| Justyna | Siemiątkowska | 22.0393 |
| Łukasz | Szymczuk | 22.3006 |
| Rafał | Stobiecki | 22.2949 |
| Paweł | Koprianiuk | 21.7725 |
| Grzegorz | Mackiewicz | 21.2584 |
| Marcin | Dżyg | 19.5337 |
| Sebastian | Lewkowicz | 20.0253 |
| Grzegorz | Sidoruk | 21.1264 |
+-----------+---------------+---------+
9 rows in set (0.00 sec)

mysql> select imie, nazwisko, floor((to_days(curdate())-to_days(data_ur))/356) as wiek from dane_4tf;
+-----------+---------------+------+
| imie | nazwisko | wiek |
+-----------+---------------+------+
| Kamil | Łaski | 24 |
| Justyna | Siemiątkowska | 22 |
| Łukasz | Szymczuk | 22 |
| Rafał | Stobiecki | 22 |
| Paweł | Koprianiuk | 21 |
| Grzegorz | Mackiewicz | 21 |
| Marcin | Dżyg | 19 |
| Sebastian | Lewkowicz | 20 |
| Grzegorz | Sidoruk | 21 |
+-----------+---------------+------+
9 rows in set (0.00 sec)

mysql>