自定义函数实现单词排序并运用于PostgreSQL(实现代码)

drugs.split(separator)

drug_list.sort()

separator.join(drug_list)

def 单词排序(drugs,separator):
    if drugs:
        drug_list=drugs.split(separator)
        drug_list.sort()
        new_drugs=separator.join(drug_list)
    else:
        new_drugs=None
    return new_drugs
单词排序(drugs,separator)

DROP FUNCTION IF EXISTS 单词排序;
CREATE OR REPLACE FUNCTION 单词排序(drugs TEXT, separator TEXT)
	RETURNS text
AS $$
if drugs:
	drug_list=drugs.split(separator)
	drug_list.sort()
	new_drugs=separator.join(drug_list)
else:
	new_drugs=None
return new_drugs
$$ LANGUAGE plpython3u;
 
SELECT 单词排序('aa;dd;bbb;cd;zz',';');