How can Convert amount into words in SQL

I think this will solve your problem.

1. Function to Convert one Digit Number to words.

CREATE    Function dbo.fConvertDigit(@decNumber decimal)

returns varchar(6)

as

Begin

declare

@strWords varchar(6)

Select @strWords = Case @decNumber

     When '1' then 'One'

     When '2' then 'Two'

     When '3' then 'Three'

     When '4' then 'Four'

     When '5' then 'Five'

     When '6' then 'Six'

     When '7' then 'Seven'

     When '8' then 'Eight'

     When '9' then 'Nine'

     Else ''

end

return @strWords

end

2. Function to convert 2 digit number to words.

CREATE    Function dbo.fConvertTens(@decNumber varchar(2))

returns varchar(30)

as

Begin

declare @strWords varchar(30)

--Is value between 10 and 19?

If Left(@decNumber, 1) = 1

begin

Select @strWords = Case @decNumber

     When '10' then 'Ten'

     When '11' then 'Eleven'

     When '12' then 'Twelve'

     When '13' then 'Thirteen'

     When '14' then 'Fourteen'

     When '15' then 'Fifteen'

     When '16' then 'Sixteen'

     When '17' then 'Seventeen'

     When '18' then 'Eighteen'

     When '19' then 'Nineteen'

end

end

else  -- otherwise it's between 20 and 99.

begin

Select @strWords = Case Left(@decNumber, 1)

     When '0' then '' 

     When '2' then 'Twenty '

     When '3' then 'Thirty '

     When '4' then 'Forty '

     When '5' then 'Fifty '

     When '6' then 'Sixty '

     When '7' then 'Seventy '

     When '8' then 'Eighty '

     When '9' then 'Ninety '

end

Select @strWords = @strWords + dbo.fConvertDigit(Right(@decNumber, 1))

end

--Convert ones place digit.

return @strWords

end

3. Function to convert amt in numbers to words. (Built with the help of above 2 functions)

CREATE function dbo.fNumToWords (@decNumber decimal(12, 2))
returns varchar(300)
As
Begin
Declare
@strNumber varchar(100),
@strRupees varchar(200),
@strPaise varchar(100),
@strWords varchar(300),
@intIndex integer,
@intAndFlag integer

Select @strNumber = Cast(@decNumber as varchar(100))
Select @intIndex = CharIndex('.', @strNumber)
if(@decNumber>99999999.99)
BEGIN
RETURN ''
END
If @intIndex > 0
begin
Select @strPaise = dbo.fConvertTens(Right(@strNumber, Len(@strNumber) - @intIndex))
Select @strNumber = SubString(@strNumber, 1, Len(@strNumber) - 3)
If Len(@strPaise) > 0 Select @strPaise = @strPaise + ' paise'
end
Select @strRupees = ''
Select @intIndex=len(@strNumber)
Select @intAndFlag=2
while(@intIndex>0)
begin
if(@intIndex=8)
begin
  Select @strRupees=@strRupees +dbo.fConvertDigit(left(@decNumber,1))+' Crore '
  Select @strNumber=substring(@strNumber,2,len(@strNumber))
  Select @intIndex=@intIndex-1
 
end
else if(@intIndex=7)
begin
  if(substring(@strNumber,1,1)='0')
  begin
   if substring(@strNumber,2,1)<>'0'
   begin
    if (@strRupees<>NULL and substring(@strNumber,3,1)='0' and substring(@strNumber,4,1)='0' and substring(@strNumber,5,1)='0' and substring(@strNumber,6,1)='0' and substring(@strNumber,7,1)='0' and @intAndFlag=2 and @strPaise=NULL)
    begin
     Select @strRupees=@strRupees+' and ' +dbo.fConvertDigit(substring(@strNumber,2,1))+' Lakh '
     Select @intAndFlag=1
    end
    else
    begin
     Select @strRupees=@strRupees+dbo.fConvertDigit(substring(@strNumber,2,1))+' Lakh '
    end
   
    Select @strNumber=substring(@strNumber,3,len(@strNumber))
    Select @intIndex=@intIndex-2
   end
   else
   begin
    Select @strNumber=substring(@strNumber,3,len(@strNumber))
    Select @intIndex=@intIndex-2
   end
  end
  else
  begin
   if(substring(@strNumber,3,1)='0' and substring(@strNumber,4,1)='0' and substring(@strNumber,5,1)='0' and substring(@strNumber,6,1)='0' and substring(@strNumber,7,1)='0'  and @intAndFlag=2 and @strPaise='')
   begin
    Select @strRupees=@strRupees+' and ' + dbo.fConvertTens(substring(@strNumber,1,2))+' Lakhs '
    Select @intAndFlag=1
   end
   else
   begin
    Select @strRupees=@strRupees+dbo.fConvertTens(substring(@strNumber,1,2))+' Lakhs '
   end
   Select @strNumber=substring(@strNumber,3,len(@strNumber))
   Select @intIndex=@intIndex-2
  end
end
else if(@intIndex=6)
  begin
   if(substring(@strNumber,2,1)<>'0' or substring(@strNumber,3,1)<>'0' and substring(@strNumber,4,1)='0' and substring(@strNumber,5,1)='0' and substring(@strNumber,6,1)='0' and @intAndFlag=2 and @strPaise='')
   begin
   
    if len(@strRupees) <= 0
    begin
     if convert(int,substring(@strNumber,1,1)) = 1
     begin
      Select @strRupees=@strRupees+'' + dbo.fConvertDigit(substring(@strNumber,1,1))+' Lakh '
      Select @intAndFlag=2
     end
     else
     begin
      Select @strRupees=@strRupees+'' + dbo.fConvertDigit(substring(@strNumber,1,1))+' Lakhs '
      Select @intAndFlag=2
     end
    end
    else
    begin
     if convert(int,substring(@strNumber,1,1)) = 1
     begin
      Select @strRupees=@strRupees+' and' + dbo.fConvertDigit(substring(@strNumber,1,1))+' Lakh '
      Select @intAndFlag=1
     end
     else
     begin
      Select @strRupees=@strRupees+' and' + dbo.fConvertDigit(substring(@strNumber,1,1))+' Lakhs '
      Select @intAndFlag=1
     end
    end
   end
   else
   begin
    if convert(int,substring(@strNumber,1,1)) = 1
    begin
     Select @strRupees=@strRupees+dbo.fConvertDigit(substring(@strNumber,1,1))+' Lakh '
    end
    else
    begin
     Select @strRupees=@strRupees+dbo.fConvertDigit(substring(@strNumber,1,1))+' Lakhs '
    end
   end
   Select @strNumber=substring(@strNumber,2,len(@strNumber))
   Select @intIndex=@intIndex-1
  end
else if(@intIndex=5)
  begin
   if(substring(@strNumber,1,1)='0')
   begin
    if substring(@strNumber,2,1)<>'0'
    begin
     if(substring(@strNumber,3,1)='0' and substring(@strNumber,4,1)='0' and substring(@strNumber,5,1)='0' and @intAndFlag=2 and @strPaise='')
     begin
      Select @strRupees=@strRupees+' and ' +dbo.fConvertDigit(substring(@strNumber,2,1))+' Thousand '
      Select @intAndFlag=1
     end
     else
     begin
      Select @strRupees=@strRupees+dbo.fConvertDigit(substring(@strNumber,2,1))+' Thousand '
     end
     Select @strNumber=substring(@strNumber,3,len(@strNumber))
     Select @intIndex=@intIndex-2
    end
    else
    begin
     Select @strNumber=substring(@strNumber,3,len(@strNumber))
     Select @intIndex=@intIndex-2
    end
   end
   else
   begin
    if(substring(@strNumber,3,1)='0' and substring(@strNumber,4,1)='0' and substring(@strNumber,5,1)='0' and @intAndFlag=2 and @strPaise='')
    begin
     Select @strRupees=@strRupees+' and '+ dbo.fConvertTens(substring(@strNumber,1,2))+' Thousand '
     Select @intAndFlag=1
    end
    else
    begin
     Select @strRupees=@strRupees+dbo.fConvertTens(substring(@strNumber,1,2))+' Thousand '
    end
    Select @strNumber=substring(@strNumber,3,len(@strNumber))
    Select @intIndex=@intIndex-2
   end
  end
else if(@intIndex=4)
  begin
   if ( (substring(@strNumber,3,1)<>'0' or substring(@strNumber,4,1)<>'0') and substring(@strNumber,2,1)='0' and  @intAndFlag=2 and @strPaise='')
   begin
    Select @strRupees=@strRupees+' and' + dbo.fConvertDigit(substring(@strNumber,1,1))+' Thousand '
    Select @intAndFlag=1
   end
   else
   begin
   Select @strRupees=@strRupees+dbo.fConvertDigit(substring(@strNumber,1,1))+' Thousand '
   end
   Select @strNumber=substring(@strNumber,2,len(@strNumber))
   Select @intIndex=@intIndex-1
  end
else if(@intIndex=3)
  begin
   if  substring(@strNumber,1,1)<>'0'
   begin
    Select @strRupees=@strRupees+dbo.fConvertDigit(substring(@strNumber,1,1))+' Hundred '
    Select @strNumber=substring(@strNumber,2,len(@strNumber))
   
    if( (substring(@strNumber,1,1)<>'0' or  substring(@strNumber,2,1)<>'0') and @intAndFlag=2 )
    begin
     Select @strRupees=@strRupees+' and '
     Select @intAndFlag=1
    end
    Select @intIndex=@intIndex-1
   end
   else
   begin
    Select @strNumber=substring(@strNumber,2,len(@strNumber))
    Select @intIndex=@intIndex-1
   end
  end
else if(@intIndex=2)
  begin
   if substring(@strNumber,1,1)<>'0'
   begin
    Select @strRupees=@strRupees+dbo.fConvertTens(substring(@strNumber,1,2))
    Select @intIndex=@intIndex-2
   end
   else
   begin
    Select @intIndex=@intIndex-1
   end
  end
else if(@intIndex=1)
  begin
   if(@strNumber<>'0')
   begin
    Select @strRupees=@strRupees+dbo.fConvertDigit(@strNumber)
   end
   Select @intIndex=@intIndex-1
   
  end
continue
end
if len(@strRupees)>0 Select @strRupees=@strRupees+ ' rupees '
IF(len(@strPaise)<>0)
BEGIN
if len(@strRupees)>0 Select @strRupees=@strRupees + ' and '
END
Select @strWords = IsNull(@strRupees, '') + IsNull(@strPaise, '')
select @strWords = @strWords + ' only'
Return @strWords
End