Mysql中什么解决函数Postgresql regexp_split_to_table

Question

In PostgreSQL have a function

Select id, regexp_split_to_table(meta_value) from metas;

Date:

1, '45,46,47'
2, '10'
3, ''
4, '12,4558,456'

Need same result

1, '45'
1, '45'
1, '47'
2, '10'
3, ''
4, '12'
4, '4558'
4, '456'

What Solution for Mysql?

Is link One Column but result in one column, need two or more columns

Answer 1

Try using substring_index function

select   id,   substring_index(substring_index(meta_value, ',', n),     ',',     -1  
) as meta_value
from metas join metas   on char_length(meta_value)     - 
char_length(replace(meta_value, ',', ''))     >= n - 1