---

(
    SELECT param.value_decimal
    FROM cte_param_pl param
    WHERE param.brief = 'МГДНакПериодС'
) AS mgd_accumulation_period,

(
    SELECT param.value_decimal
    FROM cte_param_pl param
    WHERE param.brief = 'МГДВыплПериодС'
) AS mgd_payment_period,