Methods

Instance Public methods

execute(sql, name = nil)

Executes an SQL statement, returning a PG::Result object on success or raising a PG::Error exception otherwise. Note: the PG::Result object is manually memory managed; if you don’t need it specifically, you may want consider the exec_query wrapper.

Source: 

# File activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb, line 39
def execute(sql, name = nil)
  sql = transform_query(sql)
  check_if_write_query(sql)

  materialize_transactions
  mark_transaction_written_if_write(sql)

  log(sql, name) do
    ActiveSupport::Dependencies.interlock.permit_concurrent_loads do
      @connection.async_exec(sql)
    end
  end
end

explain(arel, binds = [])

Source: 

# File activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb, line 7
def explain(arel, binds = [])
  sql = "EXPLAIN #{to_sql(arel, binds)}"
  PostgreSQL::ExplainPrettyPrinter.new.pp(exec_query(sql, "EXPLAIN", binds))
end

high_precision_current_timestamp()

Source: 

# File activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb, line 128
def high_precision_current_timestamp
  HIGH_PRECISION_CURRENT_TIMESTAMP
end