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
