mysql - how to sort varchar numeric columns? -

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this question has answer here:

i write ... order by column asc column varchar , sorts wrong

i want sorting numeric value datatype varchar how value this

1.2.840.113619.2.55.3.163578213.42.1355218116.691.1 1.2.840.113619.2.55.3.163578213.42.1355218116.691.10 1.2.840.113619.2.55.3.163578213.42.1355218116.691.100 1.2.840.113619.2.55.3.163578213.42.1355218116.691.101 1.2.840.113619.2.55.3.163578213.42.1355218116.691.2 1.2.840.113619.2.55.3.163578213.42.1355218116.691.20

but want in sequence last

1.2.840.113619.2.55.3.163578213.42.1355218116.691.1 1.2.840.113619.2.55.3.163578213.42.1355218116.691.2 1.2.840.113619.2.55.3.163578213.42.1355218116.691.10 1.2.840.113619.2.55.3.163578213.42.1355218116.691.20 1.2.840.113619.2.55.3.163578213.42.1355218116.691.100 1.2.840.113619.2.55.3.163578213.42.1355218116.691.101

and have string this

1.2.840.114257.0.10325113632288210457800001002296133400001 1.2.840.114257.0.10379710976288210457800000002296491200000 1.2.840.114257.0.10328923264288210457800000002296158400001

i want sort ...

for specific example, can do:

order length(col), col

if have other examples, might need "parse" values using substring_index().


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