Thread

1. aliases for temp tables....

   Alfonso Peniche <alfonso@iteso.mx> — 2001-02-15T22:04:46Z

   I've been looking everywhere and I can't find this:
   
   Everytime I create a temp table (Thanx Tom) within a procedure, a table
   named like pg_temp.###.# is created (I know this is MY temp table). How
   can I know the name (or alias) for this table so that I can, later on,
   check if it already exists.
   
   Example:
   I use a function to create a temp table named "mitabla1", so a physical
   table named pg_temp.32326.0 is created. I also create a temp table named
   "mitabla2" -> pg_temp.8732.2. I know there has to be a way of knowing
   which is which becuase if I run a select over "mitabla" I get the
   contents from the corresponding pg_temp.... table. I just couldn't find
   anywhere this information.
   
   Can anybody tell me where to find it or how?
   
   Thanx
   
   P.S. If I wasn't clear enough please let me know.....
   
   Cheers :-)
   
   
   

2. Re: aliases for temp tables....

   Tom Lane <tgl@sss.pgh.pa.us> — 2001-02-18T05:36:34Z

   Alfonso Peniche <alfonso@iteso.mx> writes:
   > I've been looking everywhere and I can't find this:
   > Everytime I create a temp table (Thanx Tom) within a procedure, a table
   > named like pg_temp.###.# is created (I know this is MY temp table). How
   > can I know the name (or alias) for this table so that I can, later on,
   > check if it already exists.
   
   AFAIK there is no way to retrieve the temp-table name mapping from the
   backend.  Sorry ...
   
   When we implement schemas (hopefully for 7.2) perhaps it will be
   possible to reimplement temp tables in a slightly less klugy way,
   so that this sort of problem goes away.
   
   			regards, tom lane
   
   

3. Re: aliases for temp tables....

   Bruce Momjian <pgman@candle.pha.pa.us> — 2001-02-18T05:53:49Z

   > AFAIK there is no way to retrieve the temp-table name mapping from the
   > backend.  Sorry ...
   > 
   > When we implement schemas (hopefully for 7.2) perhaps it will be
   > possible to reimplement temp tables in a slightly less klugy way,
   > so that this sort of problem goes away.
   
   There is a linked list stored in utils/cache/temprel.c.  There is no
   interface to that linked list.
   
   -- 
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