Sha256: 25ea51f70bfce09a72b91e257dabc660e94013573f07163517db1691755bb88a
Contents?: true
Size: 997 Bytes
Versions: 25
Compression:
Stored size: 997 Bytes
Contents
# frozen-string-literal: true
#
# The pg_loose_count extension looks at the table statistics
# in the PostgreSQL system tables to get a fast approximate
# count of the number of rows in a given table:
#
# DB.loose_count(:table) # => 123456
#
# It can also support schema qualified tables:
#
# DB.loose_count(:schema__table) # => 123456
#
# How accurate this count is depends on the number of rows
# added/deleted from the table since the last time it was
# analyzed.
#
# To load the extension into the database:
#
# DB.extension :pg_loose_count
#
# Related module: Sequel::Postgres::LooseCount
#
module Sequel
module Postgres
module LooseCount
# Look at the table statistics for the given table to get
# an approximate count of the number of rows.
def loose_count(table)
from(:pg_class).where(:oid=>regclass_oid(table)).get(Sequel.cast(:reltuples, Integer))
end
end
end
Database.register_extension(:pg_loose_count, Postgres::LooseCount)
end
Version data entries
25 entries across 23 versions & 2 rubygems