Question

我正在从一张表中运行查询，该表中包含有关帐号，已结算费用，核销数字以及核销原因的信息;所以该表称为group_write_off和表标题，account_id，charge_settled_date，total_charge_amount，amount_written_off，write_off_reason。我想做的就是把所有事情都拉下来，所以

Select * from group_write_off

但是对于write_off_reason包含单词'Audit'的任何情况，我希望amount_written_off显示为0（零），对于我希望显示原始amount_written_off的所有其他情况。

非常感谢。

Answer 1

使用CASE表达式。

SELECT CASE WHEN write_off_reason='Audit' THEN 0 ELSE amount_written_off END
FROM group_write_off

另请尝试使用INSTR()函数

检查列write_off_reason中是否存在Audit字

SELECT CASE WHEN INSTR(write_off_reason,'Audit') = 0 THEN 0 ELSE amount_written_off END
FROM group_write_off

如果你想要更多的话

SELECT CASE WHEN INSTR(write_off_reason,'Audit') = 0 THEN 0 
       WHEN INSTR(write_off_reason,'admin') = 0 THEN 0 
       ELSE amount_written_off END
FROM group_write_off

Oracle SQL，IF语句

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