RSpec
Ruby on Rails
Ruby
method
count_by_sql
v4.2.9 -
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Class: Querying
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- What's this?
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async_count_by_sql
(>= v7.1.3.2)
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async_find_by_sql
(>= v7.1.3.2)
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count_by_sql
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find_by_sql
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_load_from_sql
(>= v7.0.0)
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_query_by_sql
(>= v7.0.0)
= private
= protected
count_by_sql(sql)
public
Returns the result of an SQL statement that should only include a COUNT(*) in the SELECT part. The use of this method should be restricted to complicated SQL queries that can’t be executed using the ActiveRecord::Calculations class methods. Look into those before using this.
Parameters
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sql - An SQL statement which should return a count query from the database, see the example below.
Product.count_by_sql “SELECT COUNT(*) FROM sales s, customers c WHERE s.customer_id = c.id”
