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    • Tom Lane's avatar
      Make the behavior of HAVING without GROUP BY conform to the SQL spec. · 595ed2a8
      Tom Lane authored
      Formerly, if such a clause contained no aggregate functions we mistakenly
      treated it as equivalent to WHERE.  Per spec it must cause the query to
      be treated as a grouped query of a single group, the same as appearance
      of aggregate functions would do.  Also, the HAVING filter must execute
      after aggregate function computation even if it itself contains no
      aggregate functions.
      595ed2a8
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    • PostgreSQL Daemon's avatar
      · 969685ad
      PostgreSQL Daemon authored
      $Header: -> $PostgreSQL Changes ...
      969685ad
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    • Bruce Momjian's avatar
      In 'Joins between classes' in Section 5 of the tutorial we have, in · 36da236e
      Bruce Momjian authored
      the first paragraph:
      
          As an example, say we wish to find all the records that
          are in the  temperature  range  of  other records. In
          effect, we need to compare the temp_lo and temp_hi
          attributes of each EMP instance to the temp_lo and
          temp_hi  attributes of all other EMP instances.
      
      I believe that EMP should read WEATHER, as the example query that
      follows joins WEATHER to itself.
      
      EMP is often used in Oracle examples.
      
      Regards,
      Graham
      
      Other RULE cleanups
      36da236e
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