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Name Subject Result
ÕÅÈý    ÓïÎÄ         80
ÕÅÈý    Êýѧ         90
ÕÅÈý    ÎïÀí         85
ÀîËÄ    ÓïÎÄ         85
ÀîËÄ    Êýѧ         92
ÀîËÄ    ÎïÀí         82
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max
(case when subject='ÓïÎÄ' then result end) as ÓïÎÄ,
max
(case when subject='Êýѧ' then result end) as Êýѧ,
max
(case when subject='ÎïÀí' then result end) as ÎïÀí
from T1 group by
name
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ÕÅÈý                 90        
ÕÅÈý                             85
ÀîËÄ      85  
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11 advanced MySQL questions

 

Explain MySQL architecture
. - The front layer
takes care of network connections and security authentications, the
middle layer does the SQL query parsing, and then the query is handled
off to the storage engine. A storage engine could be either a default
one supp ......
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