1. 24 6月, 2003 5 次提交
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    • T
      Allow GROUP BY, ORDER BY, DISTINCT targets to be unknown literals, · a4997254
      Tom Lane 提交于
      silently resolving them to type TEXT.  This is comparable to what we
      do when faced with UNKNOWN in CASE, UNION, and other contexts.  It gets
      rid of this and related annoyances:
      	select distinct f1, '' from int4_tbl;
      	ERROR:  Unable to identify an ordering operator '<' for type unknown
      This was discussed many moons ago, but no one got round to fixing it.
      a4997254