用一组关键字在Postgres中搜索的最佳方法

Question

right now I have a keyword array like: ['key1', 'key2', 'key3'.......] , the keyword can be number or character.

If I want to search in my table (postgres database), and find out all record contain any of keyword in that array, how can I do that?

For example: I got a table which has a column called name and a column called description

I need find all record that either name or description contains any keywords in that array.

thanks

Answer 1

Maybe this example will be useful:

CREATE TABLE TEST(
  FIELD_KEY TEXT);

INSERT INTO TEST VALUES('this is hello');
INSERT INTO TEST VALUES('hello');
INSERT INTO TEST VALUES('this');
INSERT INTO TEST VALUES('other message');

SELECT *
FROM TEST
WHERE FIELD_KEY LIKE ANY (array['%this%', '%hel%']);

This will return:

this is hello
hello
this

Here other example:

SELECT *
FROM TEST
WHERE FIELD_KEY ~* 'this|HEL';

~* is case insensitive, ~ is case sensitive

You can try this example here .

Answer 2

select *
from t
where
    array[name] <@ my_array
    or array[description] <@ my_array

Couple the like operator with the any subquery expression:

select *
from t
where name like any (values ('%John%'), ('%Mary%'))

Or the array syntax:

where name like any (array['%John%', '%Mary%'])