SELECT count(DISTINCT Name) FROM PHOTOS
SELECT count(DISTINCT Name) FROM PHOTOS <table_name> : Photos col : Photo_ID | Tourist_Attraction_ID | Name | Description | Filename | Other_Details row 1 : 211 | 8449 | game1 |  | 702 |  row 2 : 280 | 7067 | game2 |  | 762 |  row 3 : 303 | 5076 | game3 |  | 392 |  row 4 : 327 | 9919 | fun1 |  | 820 |  row 5 : 332 | 5076 | fun2 |  | 60 |  row 6 : 428 | 6523 | fun3 |  | 148 |  row 7 : 435 | 8429 | fun4 |  | 453 |  row 8 : 437 | 2701 | fun5 |  | 128 |  row 9 : 525 | 5265 | park1 |  | 538 |  row 10 : 534 | 6852 | park2 |  | 325 |  row 11 : 537 | 6653 | park3 |  | 695 |  row 12 : 550 | 5076 | din1 |  | 259 |  row 13 : 558 | 8698 | din2 |  | 863 |  row 14 : 571 | 6653 | din3 |  | 864 |  row 15 : 596 | 9561 | din4 |  | 141 |
col : count(DISTINCT Name) row 1 : 15