Regex and textmatching issue

问题

I am doing some basic text matching in Postgres 9.3.5.0.
Here is my code so far:

  Select text from eightks
  WHERE other_events = true and 
  keywordRegexs = [\y(director and member \s+  and resigned)\y/ix];

I am getting the following errors

psql:test3.sql:3: invalid command \y(director
psql:test3.sql:5: ERROR:  syntax error at or near "["
LINE 3:  keywordRegexs = [

I am trying to find documents which contain those exact phrases.

回答1:

The regular expression match operator in Postgres is ~.
The case insensitive variant is ~*.
Branches are enclosed in ().

SELECT text
FROM   eightks
WHERE  other_events = true
AND    keywordregexs ~* '(\y(director | member \s+ |resigned)\y)';

The meaning of "those exact phrases" is not clear in the question.
Details in the manual.

来源：https://stackoverflow.com/questions/25779596/regex-and-textmatching-issue