hi
i have a wierd problem and i require an equally weird query.
1) backgound Table test: CREATE TABLE main_table ( string_A varchar( 20), string_B varchar(
20), ); -- both columns are identical in nature and usage INSERT INTO main_table
VALUES('abcd','qrst'); INSERT INTO main_table VALUES('efgh','efgh'); INSERT INTO main_table VALUES('ijkl','abcd');
INSERT INTO main_table VALUES('abcd','ijkl'); INSERT INTO main_table VALUES('qrst','uvwx');
2) problem: i require a query that gives me a result set of the form
'abcd' 'efgh' 'ijkl' 'qrst' 'uvwx'
that is i require the dictinct values from (visualizing each column
result as a set) the union of the two columns
3) questions
a) is a query like this possible that can give me the desired result b) if so what would it be.
4) remarks i can get the solution using a temporary table and with repeated "insert into temporary select
$columnfrom main_table"
thanks in advance
ashok
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