Question

我有一个类似于此的订单数据库

   ORDER ID | AMOUNT | FIRSTNAME | LASTNAME
     1         50        JOHN       SMITH
     2         60        PAUL       JOHNSON
     3         20        FRANK      CAMERON
     5         80        JOHN       JOHNSON

我有一个我需要提取订单的名单。对于这个例子，我们可以说“JOHN SMITH”和“PAUL JOHNSON”

我尝试过像这样的查询

SELECT * FROM ORDERS WHERE FIRSTNAME IN ("JOHN", "PAUL") AND LASTNAME IN ("SMITH", "JOHNSON")

但显然这并不是我想要的，因为它包括在内。我不知道该怎么做但我需要搜索类似

的内容

WHERE FIRSTNAME,LASTNAME IN ("JOHN","SMITH";"PAUL","JOHNSON")

OR

WHERE (FIRSTNAME,LASTNAME) IN {("JOHN","SMITH")("PAUL","JOHNSON")}

显然我对SQL知之甚少，所以我对搜索内容的语法和术语感到困惑？

Answer 1

您可以将逻辑与OR分开，如下所示：

SELECT * FROM ORDERS
WHERE 
(FIRSTNAME = "JOHN" AND LASTNAME = "SMITH")
OR
(FIRSTNAME = "PAUL" AND LASTNAME = "JOHNSON")

Answer 2

你可以做这样的事情

SELECT *
FROM ORDERS
WHERE concat(firstname, ' ', lastname) IN ('JOHN SMITH','PAUL JOHNSON')

SQL来自两列的WHERE + AND的多个查询

2 个答案: