Count total records in 2 tables

Hello,
I am using this query
select count(*) from table1, table2) to get the total number of records in those 2 tables. Actually I have only 7 records in both the tables, but I get 15. What could be the problem?
Also I need to find out another query where in I can find out which table is giving a particular record. e.g table1 has firstname,lastname and table2 has firstman,lastman. I need to know that firstname has come from tabl1 and firstman has come from table2.
Please help.
Thanks

Well, if I'm not misstaken the difference between
UNION and UNION ALL is that UNION ALL will include
duplicates while UNION will ignore the duplicates.The UNION clause forces all rows returned by each
portion of the UNION to be sorted and merged and
duplicates to be filtered before the first row is
returned. A UNION ALL simply returns all rows
including duplicates and does not have to perform any
sort, merge or filter. It is much more efficient.
(Although the performance factor may be irrelevant in
the OP's situation - the issue of duplicate rows
isn't)And what did I say?
Asuming the OP does not have duplicates within each
table (when he/she would really violate relational
database theory) Why do you assume that? Why would this violate
relational database theory?If you don't have a primary key, it sure does. I don't have my C J Date book here, but this looks like an accurate transcript of C F Codd's twelve rules a relational database must obay: http://engr.smu.edu/~fmoore/notes/12rules.htm Look at number 2...
there will not be any difference between the twoUNION "versions".
That is correct. I just didn't want to change that
part of the code ( String s1 = rs.getString(2)...)
since the OP asked about the database query.i wasn't referring to the OP, hence the 'ps' and 'for
anyone doing this sort of thing in Oracle' and 'if you
tend to use the column name version of getString()'
Yes, you are again correct. I just explained why I wrote what I wrote.

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null

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Try:
WITH CTE AS (
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sb92075 wrote:
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!http://smileyicons.net/smilies/actions1.gif!

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hello mr.
i don't want ur suggestion ok
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check inbox. forwarded the updated template

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hi all,
its being a one day searching for the solution but No Luck.
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Count total records in 2 tables

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