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Full Discussion: Problem in Awk
Top Forums Shell Programming and Scripting Problem in Awk Post 33622 by rajugp1 on Monday 13th of January 2003 06:42:19 AM
Old 01-13-2003
Problem in Awk
I have the following code in a awk script.

-------------------------------------------------
command= "sqlplus -s userid/password@database @test.sql CHICAGO"

while (command | getline)
{
var = $1
}
close(command)
---------------------------------------------------

Baically, i want to get some value from the database using a sql with an input parameter.

The query test.sql takes an input parameter and returns some value based on the input.

In more than 95% of the cases the query test.sql returns a value
and in very few cases, it returns nothing.

The problem is that when the command does not return any output(query returns 'no rows selected'), the script does not proceed past the line
while (command | getline)
and waits indefinitely for the input from the user.
When i press "Enter" , then it proceeds and prints the value of var as "Enter"


I want to make the script proceed further even if the command returns nothing.

Please suggest me as to what exactly i need to do?

Thanks in advance,
raju
 

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rt-shredder(8)						     Request Tracker Reference						    rt-shredder(8)

NAME

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       Outputs INSERT queries into file. This dump can be used to restore data after wiping out.

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   --object (DEPRECATED)
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