从db中选择数据以查找条件中的datediff

Question

有人帮帮我，伙计们？我有这样的查询：

SELECT id_instansi, nama_file, valid_date,
    TIMESTAMPDIFF(DAY, valid_date, CURDATE()) AS selisih
FROM tbl_attachment

我的问题是我只想显示“ selisih ”值= -4的行，而不是全部。 任何人都可以告诉我如何编写正确的查询来解决我的问题吗？

Answer 1

SELECT id_instansi, nama_file, valid_date,
    TIMESTAMPDIFF(DAY, valid_date, CURDATE()) AS selisih
FROM tbl_attachment
WHERE
    selisih = -4

Answer 2

SELECT id_instansi, nama_file, valid_date, TIMESTAMPDIFF(DAY, valid_date, CURDATE()) AS selisih FROM tbl_attachment 
**WHERE** TIMESTAMPDIFF(DAY, valid_date, CURDATE())=-4