Question

I am using MySql and came across a problem.

I have a column name price(Double) and i want to create a new column in the same table of datatype String and wants to copy the price into new column for all rows present in the table
with fixed length pattern.

example i want to do the following

  Price(double)      newcolumn(String)
     12                      00012
      1                      00001
      0                      00000

please help me to sort out this problem.

Answer 1

Perhaps something like this could work:

UPDATE YourTable SET newcolumn = LPAD(REPLACE(FORMAT(Price,0),',',''),5,'0')

The FORMAT function converts the double into a string with 0 decimals and here is the api.
The FORMAT introduces commas to separate thousands so we need to use REPLACE to get rid of those and here is the api.
The LPAD function left pads with the '0' and here is the api