我一直在尝试使用PLSQL中的REGEXP_REPLACE替换给定字符串中关键字 POSTPONE 周围的所有文本。
如果有两个 POSTPONE 注释彼此相邻，则仅替换frist实例。
以下是我一直在努力的例子
CROWHURA_POSTPONE_26/03/2015_Postpone_1 30/03/2015 00:00:00~CAMERONR_POSTPONE_30/03/2015_Postpone_1 04/04/2015 00:00:00~CAMERONR_NOTES_30/03/2015_waiting on sr results~CHINGD_POSTPONE_04/04/2015_Postpone_1 07/04/2015 00:00:00
我只想要与__NOTE_
相关的文字#CAMERONR_NOTES_30/03/2015_waiting on sr results#
我一直在使用的REGEXP是：
REGEXP_REPLACE(q.comments,'(~|^).{0,10}_POSTPONE_.{1,42}(~|$)','# ')
非常感谢任何帮助。
编辑： 进一步的例子，替换需要工作： 对于其中的每一个，我想要任何和所有_note_相关的文本
VANHOOYJ_NOTES_27/03/2015_Site switching out ~VANHOOYJ_POSTPONE_27/03/2015_Postpone_1 03/04/2015 00:00:00
FABISHD_POSTPONE_31/03/2015_Postpone_1 06/04/2015 00:00:00
FABISHD_NOTES_31/03/2015_GE enquiry~FABISHD_POSTPONE_31/03/2015_Postpone_1 06/04/2015 00:00:00
CAMERONR_NOTES_31/03/2015_booked sr ~CAMERONR_POSTPONE_31/03/2015_Postpone_1 05/04/2015 00:00:00
FABISHD_POSTPONE_01/04/2015_Postpone_1 06/04/2015 00:00:00
CHINGD_POSTPONE_01/04/2015_Postpone_1 03/04/2015 00:00:00~CHINGD_POSTPONE_04/04/2015_Postpone_1 07/04/2015 00:00:00
FABISHD_NOTES_31/03/2015_GE enquiry~FABISHD_POSTPONE_31/03/2015_Postpone_1 06/04/2015 00:00:00
CHINGD_NOTES_01/04/2015_waiting on switching~CHINGD_POSTPONE_01/04/2015_Postpone_1 06/04/2015 00:00:00
FABISHD_NOTES_19/03/2015_Needs to be completed by switching~FABISHD_POSTPONE_19/03/2015_Postpone_1 26/03/2015 00:00:00~FABISHD_NOTES_26/03/2015_Switching~FABISHD_POSTPONE_26/03/2015_Postpone_1 30/03/2015 00:00:00~CHINGD_POSTPONE_30/03/2015_Postpone_1 06/04/2015 00:00:00
CHINGD_NOTES_27/03/2015_GEN2360163 to confirm read~CHINGD_POSTPONE_27/03/2015_Postpone_1 01/04/2015 00:00:00~CHINGD_POSTPONE_29/03/2015_Postpone_1 02/04/2015 00:00:00~CHINGD_POSTPONE_04/04/2015_Postpone_1 07/04/2015 00:00:00
CHINGD_POSTPONE_29/03/2015_Postpone_1 02/04/2015 00:00:00~CHINGD_POSTPONE_04/04/2015_Postpone_1 07/04/2015 00:00:00
CHINGD_NOTES_01/04/2015_waiting on switching~CHINGD_POSTPONE_01/04/2015_Postpone_1 06/04/2015 00:00:00
FABISHD_NOTES_30/03/2015_Unsure where to credit units to.~FABISHD_POSTPONE_30/03/2015_Postpone_1 31/03/2015 00:00:00~CAMERONR_POSTPONE_31/03/2015_Postpone_1 05/04/2015 00:00:00
答案 0 :(得分：1)
**查询**：
select val,
regexp_replace(val, '(~?([^~]+_NOTES_[^~]+)~?)|(.)','#\2#') x, --keeps the notes part and replaces everything esle with #
regexp_replace(regexp_replace(val, '(~?([^~]+_NOTES_[^~]+)~?)|(.)','#\2#'),'#{2,}','#') y --removes consecutive #s
from
test t
<强> Results ：
| VAL | X | Y |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|
| VANHOOYJ_NOTES_27/03/2015_Site switching out ~VANHOOYJ_POSTPONE_27 | #VANHOOYJ_NOTES_27/03/2015_Site switching out ################################################################################ | #VANHOOYJ_NOTES_27/03/2015_Site switching out # |
| FABISHD_POSTPONE_31 | ############################################################################# | # |
| FABISHD_NOTES_31/03/2015_GE enquiry~FABISHD_POSTPONE_31 | #FABISHD_NOTES_31/03/2015_GE enquiry############################################################################## | #FABISHD_NOTES_31/03/2015_GE enquiry# |
| CAMERONR_NOTES_31/03/2015_booked sr ~CAMERONR_POSTPONE_31 | #CAMERONR_NOTES_31/03/2015_booked sr ################################################################################ | #CAMERONR_NOTES_31/03/2015_booked sr # |
| FABISHD_POSTPONE_01 | ############################################################################# | # |
| CHINGD_POSTPONE_01/04/2015_Postpone_1 03/04/2015 00:00:00~CHINGD_POSTPONE_04 | ############################################################################################################################################################################################### | # |
| FABISHD_NOTES_31/03/2015_GE enquiry~FABISHD_POSTPONE_31 | #FABISHD_NOTES_31/03/2015_GE enquiry############################################################################## | #FABISHD_NOTES_31/03/2015_GE enquiry# |
| CHINGD_NOTES_01/04/2015_waiting on switching~CHINGD_POSTPONE_01 | #CHINGD_NOTES_01/04/2015_waiting on switching############################################################################ | #CHINGD_NOTES_01/04/2015_waiting on switching# |
| FABISHD_NOTES_19/03/2015_Needs to be completed by switching~FABISHD_POSTPONE_19/03/2015_Postpone_1 26/03/2015 00:00:00~FABISHD_NOTES_26/03/2015_Switching~FABISHD_POSTPONE_26/03/2015_Postpone_1 30/03/2015 00:00:00~CHINGD_POSTPONE_30 | #FABISHD_NOTES_19/03/2015_Needs to be completed by switching######################################################################################################################FABISHD_NOTES_26/03/2015_Switching################################################################################################################################################################################################## | #FABISHD_NOTES_19/03/2015_Needs to be completed by switching#FABISHD_NOTES_26/03/2015_Switching# |
| CHINGD_NOTES_27/03/2015_GEN2360163 to confirm read~CHINGD_POSTPONE_27/03/2015_Postpone_1 01/04/2015 00:00:00~CHINGD_POSTPONE_29/03/2015_Postpone_1 02/04/2015 00:00:00~CHINGD_POSTPONE_04 | #CHINGD_NOTES_27/03/2015_GEN2360163 to confirm read#################################################################################################################################################################################################################################################################################################################### | #CHINGD_NOTES_27/03/2015_GEN2360163 to confirm read# |
| CHINGD_POSTPONE_29/03/2015_Postpone_1 02/04/2015 00:00:00~CHINGD_POSTPONE_04 | ############################################################################################################################################################################################### | # |
| CHINGD_NOTES_01/04/2015_waiting on switching~CHINGD_POSTPONE_01 | #CHINGD_NOTES_01/04/2015_waiting on switching############################################################################ | #CHINGD_NOTES_01/04/2015_waiting on switching# |
| FABISHD_NOTES_30/03/2015_Unsure where to credit units to.~FABISHD_POSTPONE_30/03/2015_Postpone_1 31/03/2015 00:00:00~CAMERONR_POSTPONE_31 | #FABISHD_NOTES_30/03/2015_Unsure where to credit units to.###################################################################################################################################################################################################### | #FABISHD_NOTES_30/03/2015_Unsure where to credit units to.# |
感谢@Jorge Campos为sqlfiddle。