Question

Excuse me, I do not make a clear question in english.

I need some mysql query like this: query out all the item names, UNION by two tables, but not repeat.

here is my table structure:

table: cxt_20110105

item         | ... many columns, but does not affect query, because I just need item.
art          |
collectibles |
furniture    |
books        |
arts         |
books        |
...  many lines...

table: cxt_20110106

item         | ... many columns, the columns structure is as well as table: cxt_20110105.
art          |
tickets      |
cars         |
furniture    |
tickets      |
cars         |
...  many lines...

So

mysql_query(//how to write in here?)
while ($row = mysql_fetch_array($result))
{
    //the result should be: art, collectibles, furniture, books, tickets, cars(every word, but not repeat) ;
}

Thanks.

Answer 1

UNION will remove the duplicates for you.

SELECT item FROM cxt_20110105
UNION
SELECT item FROM cxt_20110106