SELECT
cscart_product_descriptions.product_id,
cscart_product_descriptions.short_description,
IF(
cscart_product_descriptions.short_description = ''
OR cscart_product_descriptions.short_description IS NULL,
cscart_product_descriptions.full_description,
''
) AS full_description,
cscart_product_descriptions.unit_name
FROM
cscart_product_descriptions
WHERE
cscart_product_descriptions.product_id IN (
20044, 20036, 20088, 20082, 20041, 20035,
20067, 20040, 20043, 20037, 20042,
20038, 20079
)
AND cscart_product_descriptions.lang_code = 'ru'