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sadaiyan
Starting Member
6 Posts |
 Posted - 2008-07-28 : 14:56:57
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| hello, i have three fields namely a,b,c now i'm getting max(a),max(b) and max(c) .can anyone suggest me a solution how to get the max values from those three value.I tried this query but it shows error...select max(a1) from(select max(a) from table as a1 union select max(b) from table as a1 union select max(c) from table as a1) plz anyone give me a solution. thanks.sadaiyan.l |
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tkizer
Almighty SQL Goddess
38200 Posts |
Posted - 2008-07-28 : 14:59:46
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| select max(MaxColumn) as MaxColumnfrom(select max(a) as MaxColumn from table union select max(b) from table union select max(c) from table) dtTara KizerMicrosoft MVP for Windows Server System - SQL Serverhttp://weblogs.sqlteam.com/tarad/Subscribe to my blog |
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visakh16
Very Important crosS Applying yaK Herder
52326 Posts |
Posted - 2008-07-29 : 04:11:59
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| didnt i give you solution here:-http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=107540 |
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sadaiyan
Starting Member
6 Posts |
Posted - 2008-07-30 : 12:40:56
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Hello tkizer, Thanks to reply me, in this solution what is dt
select max(MaxColumn) as MaxColumnfrom(select max(a) as MaxColumn from table union select max(b) from table union select max(c) from table) dtsadaiyan.l |
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tkizer
Almighty SQL Goddess
38200 Posts |
Posted - 2008-07-30 : 12:49:07
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| It's the alias from the derived table. You can name it anything, but an alias is required. I chose dt for Derived Table.Tara KizerMicrosoft MVP for Windows Server System - SQL Serverhttp://weblogs.sqlteam.com/tarad/Subscribe to my blog |
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how to get max value...