Sql 如何使用REGEXP_REPLACE检查字符串和REPLACE中是否存在值“Closed”

我有以下情况

星期一上午8:30至下午6:00星期二星期三上午8:30至下午6:00休息

这里星期二休息。因此，我需要从字符串“星期二关闭”中排除以下值，并生成为：

星期一上午8:30至下午6:00星期三上午8:30至下午6:00

尝试使用REGEXP_REPLACEOfficeHrs、'Closed'、''，它们只会发出闭合部分，但不确定如何忽略字符串中的

您最好使用REGEXP_substr而不是REGEXP_replace，instr、REGEXP_count作为辅助函数，并在末尾使用listag进行连接：

with tab as
(
 select 'Monday 8:30 a.m. to 6:00 p.m.
 Tuesday Closed
 Wednesday 8:30 a.m. to 6:00 p.m' as str from dual 
), t1 as
(
select regexp_substr(str,'^.*$',1,level,'m') as str, level as lvl
  from tab
 connect by level <= regexp_count(str,chr(10)) + 1
)
select listagg(str,chr(10)) within group (order by lvl) as "Result String"
  from t1
 where instr(str,'Closed')=0;

Result String
---------------------------------
Monday 8:30 a.m. to 6:00 p.m.
 Wednesday 8:30 a.m. to 6:00 p.m

您可以尝试/[^]*Closed\s？/进行匹配，然后将其替换为 希望它有帮助

您可以试试这个：

 with tab as(
  select 'Monday 8:30 a.m. to 6:00 p.m. <.br> Tuesday Closed <.br> Wednesday 8:30 a.m. to 6:00 p.m.' as str from dual union all
  select 'Monday 8:30 a.m. to 6:00 p.m. <.br> Tuesday Closed <.br> Wednesday 8:30 a.m. to 6:00 p.m. <.br> Thursday Closed <.br> Sunday 8:30 a.m. to 6:00 p.m.' as str from dual union all
  select 'Monday 8:30 a.m. to 6:00 p.m. <.br> Tuesday Closed <.br> Wednesday Closed <.br> Sunday 8:30 a.m. to 6:00 p.m.' as str from dual
)
select regexp_replace(str,'> [[:alpha:]]* Closed <.br')

from tab;

---

dFabdLe/P>文本总是在字符串的中间吗？图案总是一样的吗？图案是一样的。日子可以改变。任何一天都可以关闭。谢谢，这就像预期的一样工作regexp_replacestr，“[[：alpha:][]*closed”只要是唯一可能的标记，这将工作。。。而且，只要公司关闭的日期不是列表中的第一天或最后一天，这是真的。因为模式总是相同的，所以这不应该是一个问题。问题被标记为SQL和Oracle。前斜杠是怎么回事？这看起来很像sed之类的，与oraclesql完全不同。此外，你认为[^]是什么意思？它所指的是除左括号、小于号、句点、小写字母b、小写字母r、大于号或右括号以外的任何单个字符。这就是你认为的意思吗？ | REGEXP_REPLACE(STR,'>[[:ALPHA:]]*CLOSED<.BR') | | :------------------------------------------------------------------------------------------------------- | | Monday 8:30 a.m. to 6:00 p.m. <.br> Wednesday 8:30 a.m. to 6:00 p.m. | | Monday 8:30 a.m. to 6:00 p.m. <.br> Wednesday 8:30 a.m. to 6:00 p.m. <.br> Sunday 8:30 a.m. to 6:00 p.m. | | Monday 8:30 a.m. to 6:00 p.m. <.br> Sunday 8:30 a.m. to 6:00 p.m. |