How to get the size of an index created in a plpgsql block
I'm trying to benchmark something. I want to create an index and get it's size in a plpgsql block.
This works:
haki=# create index ix on t(n);
CREATE INDEX
haki=# select pg_relation_size('ix');
pg_relation_size
------------------
22487040
When I try the same in a plpgsql block, I'm getting ERROR: relation "ix" does not exist:
haki=# DO $$DECLARE
haki$# s int;
haki$# BEGIN
haki$# PERFORM 'create index ix on t(n)';
haki$# SELECT pg_relation_size('ix') INTO s;
haki$# RAISE NOTICE 'size is %', s;
haki$# END$$;
ERROR: relation "ix" does not exist
LINE 1: SELECT pg_relation_size('ix')
I'm guessing it has something to do with the fact that DDL is transactional and the block is not committed (I might also be wrong!). However, I am unable to find a way around that.
Is it possible to get the size of an index created in a plpsql block?
postgresql plpgsql
asked 5 hours ago
hakihaki
2741311
add a comment |
I'm trying to benchmark something. I want to create an index and get it's size in a plpgsql block.
This works:
haki=# create index ix on t(n);
CREATE INDEX
haki=# select pg_relation_size('ix');
pg_relation_size
------------------
22487040
When I try the same in a plpgsql block, I'm getting ERROR: relation "ix" does not exist:
haki=# DO $$DECLARE
haki$# s int;
haki$# BEGIN
haki$# PERFORM 'create index ix on t(n)';
haki$# SELECT pg_relation_size('ix') INTO s;
haki$# RAISE NOTICE 'size is %', s;
haki$# END$$;
ERROR: relation "ix" does not exist
LINE 1: SELECT pg_relation_size('ix')
I'm guessing it has something to do with the fact that DDL is transactional and the block is not committed (I might also be wrong!). However, I am unable to find a way around that.
Is it possible to get the size of an index created in a plpsql block?
postgresql plpgsql
asked 5 hours ago
hakihaki
2741311
Have you tried without using PERFORM? dbfiddle.uk/…
– McNets
2 hours ago
add a comment |
I'm trying to benchmark something. I want to create an index and get it's size in a plpgsql block.
This works:
haki=# create index ix on t(n);
CREATE INDEX
haki=# select pg_relation_size('ix');
pg_relation_size
------------------
22487040
When I try the same in a plpgsql block, I'm getting ERROR: relation "ix" does not exist:
haki=# DO $$DECLARE
haki$# s int;
haki$# BEGIN
haki$# PERFORM 'create index ix on t(n)';
haki$# SELECT pg_relation_size('ix') INTO s;
haki$# RAISE NOTICE 'size is %', s;
haki$# END$$;
ERROR: relation "ix" does not exist
LINE 1: SELECT pg_relation_size('ix')
I'm guessing it has something to do with the fact that DDL is transactional and the block is not committed (I might also be wrong!). However, I am unable to find a way around that.
Is it possible to get the size of an index created in a plpsql block?
postgresql plpgsql
asked 5 hours ago
hakihaki
2741311
I'm trying to benchmark something. I want to create an index and get it's size in a plpgsql block.
This works:
haki=# create index ix on t(n);
CREATE INDEX
haki=# select pg_relation_size('ix');
pg_relation_size
------------------
22487040
When I try the same in a plpgsql block, I'm getting ERROR: relation "ix" does not exist:
haki=# DO $$DECLARE
haki$# s int;
haki$# BEGIN
haki$# PERFORM 'create index ix on t(n)';
haki$# SELECT pg_relation_size('ix') INTO s;
haki$# RAISE NOTICE 'size is %', s;
haki$# END$$;
ERROR: relation "ix" does not exist
LINE 1: SELECT pg_relation_size('ix')
I'm guessing it has something to do with the fact that DDL is transactional and the block is not committed (I might also be wrong!). However, I am unable to find a way around that.
Is it possible to get the size of an index created in a plpsql block?
postgresql plpgsql
postgresql plpgsql
asked 5 hours ago
hakihaki
2741311
asked 5 hours ago
hakihaki
2741311
asked 5 hours ago
hakihaki
2741311
asked 5 hours ago
hakihaki
2741311
asked 5 hours ago
hakihaki
2741311
2741311
Have you tried without using PERFORM? dbfiddle.uk/…
– McNets
2 hours ago
add a comment |
Have you tried without using PERFORM? dbfiddle.uk/…
– McNets
2 hours ago
Have you tried without using PERFORM? dbfiddle.uk/…
– McNets
2 hours ago
Have you tried without using PERFORM? dbfiddle.uk/…
– McNets
2 hours ago
add a comment |
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Have you tried without using PERFORM? dbfiddle.uk/…
– McNets
2 hours ago