Sim Zacks wrote:
Do I need to use a specific language in a function to do this or does
it work as native SQL, as it would in T-SQL?

You need to use a specific language.

What I would like to do is something like -
(pseudo code)
declare cursor for select relname from pg_statio_user_sequences
open cursor
fetch next into var_relname
while not cursor.eof
      set var_tblname=substring(var_relname, "0 until _")
      set var_fieldname=substring(var_relname,"first _ until 2nd _")
      select var_maxID=max(var_fieldname) from var_tblname
      ALTER SEQUENCE var_relname
            RESTART WITH var_maxID+1;
      fetch next into var_relname
end loop

For this plpgsql might be a good choice. Think sql with a few loop/control structures and variables.


Can dynamic statements be written in "raw sql" or do they need to be
encompassed in a language? Do all language scripts have to be
functions or can I do something like:
Start Language Processing Here
...Code
End Language Processing

You need to create a function and then call it. You can create dynamic SQL as a string and then EXECUTE it with plpgsql. The other languages offer various ways too.


--
  Richard Huxton
  Archonet Ltd

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