如何将此SAS代码转换为SQL Server代码？

SAS CODE:

data table1;
set table2;
_sep1 = findc(policynum,'/&,'); 
_count1 = countc(policynum,'/&,');

_sep2 = findc(policynum,'-');   
_count2 = countc(policynum,'-');

_sep3 = findc(policynum,'_*');  
_count3 = countc(policynum,'_*'); 
data table1;
set table2;
_sep1 = fi