SQL查询搜索两个字符串

Question

我试图运行一个基本的SQL查询，其中搜索两个字符串之一：

1. “晚上加班”
2. “晚上完成工作”

我尝试了where命令，但输出为空。 这是有问题的部分：

      where execution_location = ('Nightly job up' or Nightly job 'finished');

请协助，在此先感谢。

Answer 1

使用IN(...)代替：

where execution_location in ('Nightly job up', 'Nightly job finished');

这是在一个子句中比较多个值的方法。

Answer 2

对于MySQL或Transact-SQL，您的where字符串应为：

WHERE (execution_location = 'Nightly job up' OR execution_location = 'Nightly job finished');

Answer 3

尝试：

WHERE execution_location IN ('Nightly job up, 'Nightly job finished');

或者，如果您要查找每个以Nightly job开头的字符串：

WHERE execution_location LIKE 'Nightly job%'

Answer 4

尝试

where execution_location in ('Nightly job up', 'Nightly job finished');

Answer 5

您的表情：

('Nightly job up' or 'Nightly job finished')

...被评估为布尔表达式，结果为0（或FALSE ）（因为字符串的评估结果为FALSE ）。

因此，您最终的WHERE子句等效于：

... WHERE execution_location = 0

其他人已经提供了正确的语法:)