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Topic |
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sqlfresher2k7
Aged Yak Warrior
623 Posts |
 Posted - 2014-12-27 : 20:46:58
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[code]
Please help to rewrite the below query to get the expected output..
I want the description if exist for student to be 1 else 0..
Query
-------
Select
StudentNo,
Name,
Science,
Social,
Math
From
StudentInfo Sinfo Left Join StudentDesc SDesc
On Sinfo.StudentNo = SDesc.StudentNo
where SDesc.Desc in ('Science','Social','Math')
Table:StudentInfo
StudentNo Name
-------- -------
1234 Sam
1235 Brad
1236 Viv
1237 Brigg
1241 Sim
Table:StudentDesc
StudentNo Desc
--------- -----
1234 Science
1235 Social
1236 Science
1237 Math
1238 Math
1239 English
1240 English
Expected output
==================
StudentNo Name Science Social Math
-------- ------- -------- ------- ------
1234 Sam 1 0 0
1235 Brad 0 1 0
1236 Viv 1 0 1
1237 Brigg 0 0 1
1241 Sim 0 0 0
[/code] |
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sqlteamsam
Starting Member
1 Post |
Posted - 2014-12-28 : 06:37:04
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pls try this
Select StudentNo,Name,
case when Science is null then 0 else 1 end ,
case when Social is null then 0 else 1 end,
case when Math is null then 0 else 1 end,
From
StudentInfo Sinfo Left Join StudentDesc SDesc
On Sinfo.StudentNo = SDesc.StudentNo
where SDesc.Desc in ('Science','Social','Math') |
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query help