Want maximum of two table column

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Hello,
I have created two tables namely indledger and cash_indledger which has two same column namely "entryno".Now i want the maximum of "entryno" ie. max(entryno) from these two tables collectively in a single query....
Please help me....
Thank you.

Posted 23-Jun-11 23:09pm

Yashodip Jagdale

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Kim Togo · Accepted Answer · 2011-06-23T23:16:00

Solution 1

Use UNION

SQL

SELECT MAX(entryno) AS m FROM tbl1
UNION
SELECT MAX(exitno) AS m FROM tbl2

Posted 23-Jun-11 23:16pm

Kim Togo

Comments

Yashodip Jagdale 24-Jun-11 5:22am

But sir I want max from two tables of same column name.

Kim Togo 24-Jun-11 5:34am

SELECT MAX(m)
FROM (
SELECT MAX(entryno) AS m FROM tbl1
UNION
SELECT MAX(exitno) AS m FROM tbl2)

Espen Harlinn 25-Jun-11 13:43pm

A 5

Kim Togo 27-Jun-11 3:35am

Thanks Espen

CPallini · Accepted Answer · 2011-06-23T23:43:00

Solution 2

SQL

SELECT CASE WHEN MAX(indledger.entryno) > MAX(cash_indledger.entryno) THEN MAX(indledger.entryno) ELSE MAX(cash_indledger.entryno) END FROM indledger, cash_indledger;

Posted 23-Jun-11 23:43pm

CPallini

Comments

Yashodip Jagdale 24-Jun-11 5:57am

But sir any one of these two tables has no data then it return NULL.Please help me sir..

CPallini 24-Jun-11 6:00am

You should be able to handle NULL values, shouldn't you?