Shell Programming and Scripting

There is almost never a need to invoke sed from awk (or even to use sed to filter output produced by awk. The awk editing functions can do most of the stuff sed can do and in this case, I find it easier to do it in awk than in sed. Your post #7 seems to ignore the suggestions provided in post #6. Please look at post #6 and let us know whether or not it works for you.

that's why I proposed the MySQL- function DATE_FORMAT. For an SQL server, how about any of these (from this URL)

Code:

SELECT convert(varchar, getdate(), 126) - yyyy-mm-ddThh:mm:ss.mmm
                                        - 2008-10-02T10:52:47.513

- SQL create different date styles with t-sql string functions

SELECT replace(convert(varchar, getdate(), 111), ‘/', ‘ ‘) - yyyy mm dd

Thanks sir,Don Cragun

This works perfect for me.

actually when I was replying to post no 5, post 6 came and when I read that I have posted thank you also.
Sorry for inconvenience because of me.

Sir, I am just a beginner in unix world, if you have any document regarding awk command, it would be very much helpful all newbies like me.

Thank you

---------- Post updated at 09:31 AM ---------- Previous update was at 09:21 AM ----------

Code:

 
 SELECT replace(convert(varchar, getdate(), 111), ‘/', ‘ ‘) - yyyy mm dd

also works perfect
thanks

I have one doubt.

if column length is 20 and column variable length is variable say for one digit/ character to n character, then how to auto fit column lengh

Code:

 
 convert(varchar(19),column_name, 112)
 LEFT(column_length,15)

here we are fixing length to 19/15 but if column variable are of 4 digit only then how to auto fit column length, is it possible

As with any system-provided utility, the manual pages supplied with your system are always a good place to look to figure out how that utility works. You can start with:

Code:

man man

to see how the man command works, and environment variables and options you can set to control what pager is used to view the output it provides. Then move on to:

Code:

man awk

to see how awk works on your system.

If the man page whets your appetite and you want to dig a lot deeper, there are hundreds (if not thousands) of examples of awk scripts on this forum and you could try the books: