Row-to-column applications that do not use crosstab to implement PostgreSQL

Source: Internet
Author: User
Tags crosstab

Table structure and data


Select Logdatetime,sum (login) as login,sum (logo) as logo

From
Select Date (logdatetime) as "Logdatetime", Case logfrom if ' login ' then COUNT (ID) Else 0 end as "login",
Case Logfrom if ' logo ' then COUNT (ID) Else 0 end as "logo"
From "Log" WHERE date (logdatetime) >= ' 2014-11-04 ' and date (logdatetime) <= ' 2014-11-05 ' GROUP by "Logdatetime", "Lo Gfrom "
) T
GROUP by "Logdatetime"

ORDER by "Logdatetime" ASC

Execution results


Row-to-column applications that do not use crosstab to implement PostgreSQL

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