需要在几天之间删除空格并使用 sql 添加逗号

Question

I would like to remove spaces and add commas in between the data using SQL. Like if i have column with the data ' mon tue wed thu 'i need it to be like 'mon,tue,wed,thu'

Can someone help me with this.

Answer 1

In Oracle, you can use:

SELECT TRIM(BOTH ',' FROM REGEXP_REPLACE(value, '\s+', ',')) AS replaced_value
FROM   table_name;

Which, for the sample data:

CREATE TABLE table_name (value) AS
SELECT ' mon tue wed thu ' FROM DUAL

Outputs:

REPLACED_VALUE
mon,tue,wed,thu

db<>fiddle here