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Top Forums Shell Programming and Scripting How to extract block from a file? Post 302481389 by jlliagre on Friday 17th of December 2010 11:12:46 AM
Old 12-17-2010
This should work:
Code:
pattern="16318020: 111.678"
file=siebel.log
awk -v p="$pattern" '
/^EventContext/ { ec=NR }
/^SELECT/ { s=NR }
$0 ~ p {
        c=NR;
        cmd=sprintf("sed -n -e %dp -e %d,%dp %s",ec,s,c,FILENAME);
        system(cmd);
        exit(0);
}
' $file

As usual, replace awk by nawk when relevant.
 

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DB2_NUM_ROWS(3) 							 1							   DB2_NUM_ROWS(3)

db2_num_rows - Returns the number of rows affected by an SQL statement

SYNOPSIS
int db2_num_rows (resource $stmt) DESCRIPTION
Returns the number of rows deleted, inserted, or updated by an SQL statement. To determine the number of rows that will be returned by a SELECT statement, issue SELECT COUNT(*) with the same predicates as your intended SELECT statement and retrieve the value. If your application logic checks the number of rows returned by a SELECT statement and branches if the number of rows is 0, consider modi- fying your application to attempt to return the first row with one of db2_fetch_assoc(3), db2_fetch_both(3), db2_fetch_array(3), or db2_fetch_row(3), and branch if the fetch function returns FALSE. Note If you issue a SELECT statement using a scrollable cursor, db2_num_rows(3) returns the number of rows returned by the SELECT state- ment. However, the overhead associated with scrollable cursors significantly degrades the performance of your application, so if this is the only reason you are considering using scrollable cursors, you should use a forward-only cursor and either call SELECT COUNT(*) or rely on the boolean return value of the fetch functions to achieve the equivalent functionality with much better perfor- mance. PARAMETERS
o $stmt - A valid stmt resource containing a result set. RETURN VALUES
Returns the number of rows affected by the last SQL statement issued by the specified statement handle. PHP Documentation Group DB2_NUM_ROWS(3)
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