sql - Join and compare data from two tables -

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I have the same schema name and project and allocation_time (integer) two columns allocation_de (integer) in two tables project and Timings are from TimesShops. I just want to join those two columns and want a small verification like this: 

  SELECT Project.ID, Project.allocation_days, Timesheet.allocation_time project INNER JOIN Timesheet ON project.ID = Timesheets.Id; Surely from project (@hours / 24) and lieutenant; Allocation_dev - some ELSE BREAKENDIF

In order to get the merger, the order of the conditions is not known, if it is & lt; Thank 24 or break

You can do this in a single query like 

  * Select, case when SUM (allocation_time) / 24

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