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Shell script to solve query

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# 1  
Old 01-20-2018
Shell script to solve query
Hi I have data in the below format in two columns in excel which i will copy to notepad.



Code:
test as rec1,	string
test as rec2,	byteint
test as rec3,	string
update date as test,	datetime
name as tes2	string

I need to add trim function on all the string columns and keep the remaining same. As below

o/p

Code:
trim(test) as rec1,	
test as rec2,	
trim(test) as rec3,	
update date as test,	
trim(name) as tes2

There are 50000 columns this way and hence i am looking for something in script to do that.

Any help is appreciated.
Last edited by Don Cragun; 01-21-2018 at 08:36 AM.. Reason: Change QUOTE tags to CODE tags.
# 2  
Old 01-20-2018
Welcome to the forum.

Any attempts / ideas / thoughts fro your side?
# 3  
Old 01-20-2018
I was thinking to do a search on the second field and if it contains string then add "trim( at the beginning of the first filed and ")" at the end before as. Not sure how I can do it though I know we can use sed for that.
# 4  
Old 01-20-2018
How about
Code:
awk '$NF == "string" {$1 = "trim(" $1 ")"} {NF--; $1 = $1}  1' file

This has been tested under linux and FreeBSD; it may fail with other awk versions. Unfortunately you don't mention your OS, shell, tools' versions.
Last edited by RudiC; 01-20-2018 at 05:07 PM..
# 5  
Old 01-21-2018
Thanks Rudic. Its only working for 1 row out of sample 4 rows i had.

My shell is bash and I am on Linux.
# 6  
Old 01-21-2018
My result with your input data from post#1
Code:
trim(test) as rec1,
test as rec2,
trim(test) as rec3,
update date as test,
trim(name) as tes2

# 7  
Old 01-21-2018
It's working for that. but when i change the i/p to below its bnot working

Code:
Tpc.CALCULATED_AMT      as      CALCULATED_AMT  ,date
Tpc.SERVICE_ID  as     SERVICE_ID       ,string
TRC.ITEM_NO     as      ITEM_NO  ,date
TPC.LAST_UPD_TIMESTAMP  as      LAST_UPD_TIMESTAMP      ,string

Last edited by Don Cragun; 01-21-2018 at 08:36 AM.. Reason: Change QUOTE tags to CODE tags.
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