更新:SQL UDF

 创建或替换函数split_string_to_char(字符串)返回数组作为$$split(regexp_replace(a，'.'，'，\\ 0'，2)，'，')$$;选择split_string_to_char('hello'); 

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我在处理

如果要从中创建表:

 选择*来自表(split_to_table(regexp_replace('abc'，'.'，'，\\ 0'，2)，'，'))y 

在 https://github.com/fhoffa/AdventOfCodeSQL/blob/main/2020/6.sql

I need to split a string like "abc" into individual records, like "a", "b", "c".

This should be easy in Snowflake: SPLIT(str, delimiter)

But if the delimiter is null, or an empty string I get the full str, and not characters as I expected.

Update: SQL UDF

create or replace function split_string_to_char(a string)
returns array
as $$
split(regexp_replace(a, '.', ',\\0', 2), ',')
$$
;
select split_string_to_char('hello');

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I found this problem while working on Advent of Code 2020.

Instead of just splitting a string a working solution is to add commas between all the characters, and then split that on the commas:

select split(regexp_replace('abc', '.', ',\\0', 2), ',')

If you want to create a table out of it:

select *
from table(split_to_table(regexp_replace('abc', '.', ',\\0', 2), ',')) y

As seen on https://github.com/fhoffa/AdventOfCodeSQL/blob/main/2020/6.sql