Re: performance issue with a PL/pgSQL function 

OMPRAKASH SAHU <sahuop2121@gmail.com> writes:
>  I am using a temp table name 5 to 6 times, by storing the data temporarily
> and handing over to other temp and then drop & create temp_table with same
> name to store next temporary data,

That's definitely an anti-pattern.  Can you TRUNCATE the temp table
instead of drop-n-recreate?

> Seeing the query plan just by running explain is hectic in case of
> function having more than 4k lines of code, can you please help me if
> there is any tool to check the whole execution plan for a function just
> like we get for a select query.

There's no "whole execution plan" for a function, only for individual
queries within it.  You might find auto_explain (with
log_nested_statements turned on) to be useful to capture those query
plans.

            regards, tom lane