在Greenplum（PostgreSQL）表中查询出所有包含emoji符号的数据

create table emoji_unicode(c varchar(10));
copy emoji_unicode from '/data/emoji_unicode.txt';

alter table emoji_unicode add column e varchar(10);
update emoji_unicode set e=chr(cast(cast(('x' || c) as bit(16)) as int));

select * from emoji_unicode;
   c   | e 
-------+---
 2755  | ❕
 1F43B | ὃ
 1F450 | ὅ
 1F9B5 | ᾛ
 1F1FC | ἟
 1F34B | ἴ
 1F1F9 | ἟
 1F693 | Ὡ
 1F355 | ἵ
 23EC  | ⏬
 ......
 1F004 | ἀ
 1FAB0 | ᾫ
 1F63A | ὣ
 1F532 | ὓ
 1F606 | ὠ
 1F982 | ᾘ
 1F35F | ἵ
 1F995 | ᾙ
 1F646 | ὤ
 1FAC5 | ᾬ
(1432 rows)

-- 源数据
SELECT x.content FROM x WHERE CommentID in (39539523,39205786);
 
-- 关联查询
SELECT distinct x.content FROM x, emoji_unicode 
 WHERE CommentID in (39539523,39205786) and x.content like '%'||e||'%';