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Full Discussion: HELP: If Doesn't Work in AWK
Top Forums Shell Programming and Scripting HELP: If Doesn't Work in AWK Post 302451425 by agama on Monday 6th of September 2010 11:28:56 PM
Old 09-07-2010
I think the problem is that you don't need the $ with the -v assignments to hard assign them values. Try it this way:
Code:
awk -v col1=3 -v col2=13 '{ if($(col1) != "-" && $(col2) != "-") { print; }}' all.dat


If that doesn't work, then I'd replace the print statement with this to see what awk sees exactly in the 3rd and 13th columns, but try the previous change first.
Code:
     printf( "%d=(%s)  %d=(%s)\n", col1, $(col1), col2, $(col2) );

to see exactly what awk beleives to be in the fields designated by col1 and col2.

You can take the values from the environment, but you'll have to assign them using the -v options. There are other ways, but they involve messy quoting and can be the cause of odd problems as a result.
 

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MYSQLI_STMT.BIND_RESULT(3)						 1						MYSQLI_STMT.BIND_RESULT(3)

mysqli_stmt::bind_result - Binds variables to a prepared statement for result storage

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bool mysqli_stmt::bind_result (mixed &$var1, [mixed &$...]) DESCRIPTION
Procedural style bool mysqli_stmt_bind_result (mysqli_stmt $stmt, mixed &$var1, [mixed &$...]) Binds columns in the result set to variables. When mysqli_stmt_fetch(3) is called to fetch data, the MySQL client/server protocol places the data for the bound columns into the speci- fied variables $var1, .... Note Note that all columns must be bound after mysqli_stmt_execute(3) and prior to calling mysqli_stmt_fetch(3). Depending on column types bound variables can silently change to the corresponding PHP type. A column can be bound or rebound at any time, even after a result set has been partially retrieved. The new binding takes effect the next time mysqli_stmt_fetch(3) is called. PARAMETERS
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Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Object oriented style <?php $mysqli = new mysqli("localhost", "my_user", "my_password", "world"); if (mysqli_connect_errno()) { printf("Connect failed: %s ", mysqli_connect_error()); exit(); } /* prepare statement */ if ($stmt = $mysqli->prepare("SELECT Code, Name FROM Country ORDER BY Name LIMIT 5")) { $stmt->execute(); /* bind variables to prepared statement */ $stmt->bind_result($col1, $col2); /* fetch values */ while ($stmt->fetch()) { printf("%s %s ", $col1, $col2); } /* close statement */ $stmt->close(); } /* close connection */ $mysqli->close(); ?> Example #2 Procedural style <?php $link = mysqli_connect("localhost", "my_user", "my_password", "world"); /* check connection */ if (!$link) { printf("Connect failed: %s ", mysqli_connect_error()); exit(); } /* prepare statement */ if ($stmt = mysqli_prepare($link, "SELECT Code, Name FROM Country ORDER BY Name LIMIT 5")) { mysqli_stmt_execute($stmt); /* bind variables to prepared statement */ mysqli_stmt_bind_result($stmt, $col1, $col2); /* fetch values */ while (mysqli_stmt_fetch($stmt)) { printf("%s %s ", $col1, $col2); } /* close statement */ mysqli_stmt_close($stmt); } /* close connection */ mysqli_close($link); ?> The above examples will output: AFG Afghanistan ALB Albania DZA Algeria ASM American Samoa AND Andorra SEE ALSO
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