Sql can'；在有或何处条件时，不将用例用作新的

我试图在PostgreSQL查询中使用CASE，并在where或having条件中使用它，我收到了这个错误消息

[Err]错误：“新建”列不存在第14行：
运输要求详细信息。原始数量>新数量

试试这个

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您需要子查询、CTE或横向联接。在have.thnks中使用相同的大小写，此代码运行良好

SELECT
*,
    CASE
        WHEN dismiss_qty is NULL THEN 0
        ELSE dismiss_qty
    END AS new_dismiss

FROM
 trans_requistion_details
INNER JOIN  sub_ingredients ON  trans_requistion_details.sub_ing_id =  sub_ingredients.sub_ing_id
INNER JOIN  units ON  sub_ingredients.sub_ing_stock_unit =  units.unit_id
INNER JOIN  ing_groups ON  sub_ingredients.ing_group_id =  ing_groups.ing_group_id
 HAVING
 trans_requistion_details.trans_id = 175991 and original_qty > new_dismiss

WITH j AS (
  SELECT *,
    CASE WHEN dismiss_qty is NULL THEN 0
    ELSE dismiss_qty END AS new_dismiss
FROM trans_requistion_details
) SELECT * FROM j
INNER JOIN  sub_ingredients ON  j.sub_ing_id =  sub_ingredients.sub_ing_id
INNER JOIN  units ON  sub_ingredients.sub_ing_stock_unit =  units.unit_id
INNER JOIN  ing_groups ON  sub_ingredients.ing_group_id =  ing_groups.ing_group_id
WHERE j.trans_id = 175991 and original_qty > j.new_dismiss