On Fri, Mar 11, 2016 at 4:45 PM, Koichi Suzuki <koichi....@gmail.com> wrote:

> Hi,
> Does someone know how to prepare a synamic SQL statement in plpgsql?
> All the examples, PG documents describe only about preparing static SQL
> statement.
You might want to rephrase the question.  From the pl/pgsql documentation:

"Note: The PL/pgSQL EXECUTE statement is not related to the EXECUTE SQL
statement supported by the PostgreSQL server. The server's EXECUTE
statement cannot be used directly within PL/pgSQL functions (and is not


So even if you could SQL-PREPARE you wouldn't be able to execute it.

The linked section describes how to construct and execute dynamic queries
in pl/pgsql.  The short answer is you create variable of type text and then

stmt := format('SELECT * FROM %i', in_tbl_name);
EXECUTE stmt [...]

David J.

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