Teradata SQL - 如果条件A1则评估条件b1 ...对于A1，A2，A3

Question

这应该产生 -

au  123  john
ph  456  pipin
nz  765  myers
nz  876  philip

Answer 1

我认为您只需稍微更改WHERE子句中的语法：

SELECT
    country,
    account_num,
    name
FROM table
WHERE
    country = 'au' AND account_num <> '999' OR
    country = 'ph' AND account_num <> '888' OR
    country = 'br' AND account_num <> '555';

Answer 2

添加了另一个条件来捕捉除了＆＃39;以及＆＃39; ph＆＃39;以外的其他国家/地区。或者＆＃39; br＆＃39;：

SELECT
    country,
    account_num,
    name
FROM table
WHERE
   (country = 'au' AND account_num <> '999') OR
   (country = 'ph' AND account_num <> '888') OR
   (country = 'br' AND account_num <> '555') OR
   country not in ('au', 'ph', 'br');