Sha256: 89a9a0bcfe38362d59a1cd36caf7a1b426e2510e75fdcfeb4ef28a86ade5ec84
Contents?: true
Size: 731 Bytes
Versions: 10
Compression:
Stored size: 731 Bytes
Contents
module PgHero
module Methods
module Explain
def explain(sql)
sql = squish(sql)
explanation = nil
# use transaction for safety
with_transaction(statement_timeout: 10000, rollback: true) do
if (sql.sub(/;\z/, "").include?(";") || sql.upcase.include?("COMMIT")) && !explain_safe?
raise ActiveRecord::StatementInvalid, "Unsafe statement"
end
explanation = select_all("EXPLAIN #{sql}").map { |v| v[:"QUERY PLAN"] }.join("\n")
end
explanation
end
private
def explain_safe?
select_all("SELECT 1; SELECT 1")
false
rescue ActiveRecord::StatementInvalid
true
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems