sql order by - Need a help for sort in mysql -

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hi want sort table .the field contains numbers,alphabets , numbers alphabets ie,

 1 2 1a 11a 6a b

i want sort to,

 1 1a 2 6a 11a b

my code is, 

select * t order cast(st signed), st
result is,

 b 1 1a 2 6a 11a

i found code in url 

"http://www.mpopp.net/2006/06/sorting-of-numeric-values-mixed-with-alphanumeric-values/"
please me

this required sort order, in presence of 0 in table;

select * t  order    st regexp '^[[:alpha:]].*',    st+0,    st

an sqlfiddle test with.

  • as first sort criteria, sorts anything starts letter after doesn't. that's regexp does.
  • as second sort criteria sorts numerical value string starts (st+0 adds 0 numerical part string starts , returns int)
  • as last resort, sorts string alphabetical ones in order.

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