Problem in creating new varibles

[Annie Sylth]

Hi, i'm new to stata and i want to ask for some advices. I have the data as follow:

Now I want to create a new variable "person" as a combination of tinh, huyen, xa, hoso, matv which for example would be: "person = 1011331"
Could someone show me the way to create such a value? Since my data has over 100,000 observations.
Thank you.

[Carlo Lazzaro]

Annie:
you may want to try:

egen new=concat(tinh huyen xa hoso matv)

As this code will report a -string- variable, if you want to turn into a numeric one, try:

destring new, gen(num_new)

The following toy-example works all this stuff out:

. use "C:\Program Files (x86)\Stata15\ado\base\a\auto.dta"
(1978 Automobile Data)

. egen new=concat(price mpg)

. destring new, g(num_new)
new: all characters numeric; num_new generated as long

. list new num_new in 1/10

     +-------------------+
     |     new   num_new |
     |-------------------|
  1. |  409922    409922 |
  2. |  474917    474917 |
  3. |  379922    379922 |
  4. |  481620    481620 |
  5. |  782715    782715 |
     |-------------------|
  6. |  578818    578818 |
  7. |  445326    445326 |
  8. |  518920    518920 |
  9. | 1037216   1037216 |
 10. |  408219    408219 |
     +-------------------