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Full Discussion: awk loop - substr and sub query
Top Forums Shell Programming and Scripting awk loop - substr and sub query Post 302686161 by viallos on Tuesday 14th of August 2012 04:41:14 AM
Old 08-14-2012
Sorry zaxxon - didn't want to confuse anyone.
I'm PL/SQL developer not Unix and this was passed into me as a bonus :-).

The issue remains the same. When creating sql insert command I would like to remove trailing spaces before and after the string.

As you can see from the script I have to check if number of data rows (starting with 1) = number provided in the header.
This is done as per

Code:
 
/^0/ {H[h++]=substr($0,9,6) + 0}

Once the number match I have to write 4 positions (columns) form the data rows in file. It is done as per

Code:
for(i=0;i<a;i++)
                    printf "into %s (val1, val2, val3, val4) values (%c%s%c,%c%s%c,%c%s%c,%c%s%c)\n",data_table,39,A[i],39,39,P[i],39,39,S[i],39,39,D[i],39 >> Load_SQL

As you can see I use following A[i], P[i], S[i], D[i] which represent each column I need.

Each of above values are calculated as per

Code:
/^1/ {A[a++]=substr($0,2,16)} 
          {P[p++]=substr($0,18,1)}
          {S[s++]=substr($0,19,10)}
          {D[d++]=substr($0,29,11)}

Your solution suggested to replace 'A[a++] 'with 'a' and then following 'P[p++]' with 'p' and ... S and D but if I do that I get only one last row read into the output file.

If I try to adopt your code into my code so I'm changing my code and adding gsub after substr

Code:
/^1/ {A[a++]=substr($0,2,16);gsub(/ /,"",A[a])} 
          {P[p++]=substr($0,18,1);gsub(/ /,"",P[p])}
          {S[s++]=substr($0,19,10);gsub(/ /,"",S[s])}
          {D[d++]=substr($0,29,11);gsub(/ /,"",D[d])}

It is not working.

Hope it is less confusing now.

Thanks for help.
 

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