当使用SQL（Teradata）模糊搜索多个单词时，在结果中，如何列出匹配的单词？

Question

I want to use like to query some records like:

select table1.survey_txt where table1.survey_txt like any (
'%aaaa%',
'%bbbb%',
'%cccc%',
'%dddd%',
'%eeee%',
'%[^a-z0-9]ffff[^a-z0-9]%'
)

The result will be like:

survey_txt

heheaaaahehe

kekeaaaakeke

uueabbbbk

jioewccccfjo

esjoffffownr

---

So how can I make the result like:

survey_txt..........matched_word

heheaaaahehe........aaaa

kekeaaaakeke.........aaaa

uueabbbbk...............bbbb

jioewccccfjo..............cccc

esjoffffownr..................ffff

---

This is a table but I don't know how to make a table here so I just used "....." to make it look like table.

Answer 1

Use REGEXP_SUBSTR instead of LIKE:

SELECT survey_txt,
   RegExp_Substr(survey_txt, '(aaaa|bbbb|cccc|dddd|eeee|[^a-z0-9]ffff[^a-z0-9])') AS matched_word
FROM surveys
WHERE matched_word IS NOT NULL

Answer 2

Try building a table with the search words and like strings, then inner joining. Since you are using Teradata something like this example should work:

CREATE VOLATILE TABLE searchwordslist
  (searchword VARCHAR(32)
  , likestring VARCHAR(32))
ON COMMIT PRESERVE ROWS
;
INSERT INTO searchwordslist VALUES('aaaa', '%aaaa%');
INSERT INTO searchwordslist VALUES('bbbb', '%bbbb%'); 
--and so on for all the words

So now our searchwordlist table looks like:

searchword  likestring
bbbb        %bbbb%
aaaa        %aaaa%

Then your query is:

SELECT a.survey_txt 
  , b.searchword
FROM table1 a
INNER JOIN searchwordslist b
  ON a.survey_txt LIKE b.likestring
;

Giving your desired result:

survey_txt      searchword
heheaaaahehehe  aaaa
kekebbbbkeke    bbbb