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How do I pipe the output of one isql to another?
Sybase Interview Questions and Answers
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How do I pipe the output of one isql to another?
The following example queries sysdatabases and takes each database name and creates a string of the sort sp_helpdb dbname and sends the results to another isql. This is accomplished using bourne shell sh(1) and sed(1) to strip unwanted output:
#!/bin/sh
PASSWD=yuk
DSQUERY=GNARLY_HAIRBALL
echo "$PASSWD print \"$PASSWD\"
go
select 'sp_helpdb ' + name + char(10) + 'go'
from sysdatabases
go" | isql -U sa -S $DSQUERY -w 1000 | \
sed -e '/affected/d' -e '/---/d' -e '/Password:/d' | \
isql -U sa -S $DSQUERY -w 1000
To help you understand this you may wish to comment out any series of pipes and see what output is being generated.
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