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Full Discussion: Unexpected result from awk
Top Forums UNIX for Beginners Questions & Answers Unexpected result from awk Post 303015413 by uniran on Wednesday 4th of April 2018 12:53:12 PM
Old 04-04-2018
Unexpected result from awk

Hello,

Giving those commands:

Code:
cat > myfile 
1 
2 
3 
^D 
cat myfile | awk '{ s=s+$1 ; print s}'

The output is:

Code:
1
3
6

It seems like this command iterates each time on a different row so $1 is the first field of each row.. But what caused it to refer to each row ?.
What I mean is, how it knows that for the second iteration for example, $1 should be the first field of the second row rather then the first field of the first row again ?

Last edited by Don Cragun; 04-04-2018 at 04:13 PM.. Reason: Add missing CODE tags.
 

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IBASE_FETCH_ASSOC(3)							 1						      IBASE_FETCH_ASSOC(3)

ibase_fetch_assoc - Fetch a result row from a query as an associative array

SYNOPSIS
array ibase_fetch_assoc (resource $result, [int $fetch_flag]) DESCRIPTION
Fetch a result row from a query as an associative array. ibase_fetch_assoc(3) fetches one row of data from the $result. If two or more columns of the result have the same field names, the last column will take precedence. To access the other column(s) of the same name, you either need to access the result with numeric indices by using ibase_fetch_row(3) or use alias names in your query. PARAMETERS
o $result - The result handle. o $fetch_flag -$fetch_flag is a combination of the constants IBASE_TEXT and IBASE_UNIXTIME ORed together. Passing IBASE_TEXT will cause this function to return BLOB contents instead of BLOB ids. Passing IBASE_UNIXTIME will cause this function to return date/time values as Unix timestamps instead of as formatted strings. RETURN VALUES
Returns an associative array that corresponds to the fetched row. Subsequent calls will return the next row in the result set, or FALSE if there are no more rows. SEE ALSO
ibase_fetch_row(3), ibase_fetch_object(3). PHP Documentation Group IBASE_FETCH_ASSOC(3)
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