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#! /bin/sh
# You first run findoidjoins on the template1 database, and send that
# output into this script to generate a list of SQL statements.
# NOTE: any field that findoidjoins thinks joins to more than one table
# will NOT be checked by the output of this script. You should be
# suspicious of multiple entries in findoidjoins' output.
# Caution: you may need to use GNU awk.
AWK=${AWK:-awk}
INPUTFILE="tmp$$a"
DUPSFILE="tmp$$b"
NONDUPSFILE="tmp$$c"
rm -f $INPUTFILE $DUPSFILE $NONDUPSFILE
trap "rm -f $INPUTFILE $DUPSFILE $NONDUPSFILE" 0 1 2 3 15
# Read input
cat "$@" >$INPUTFILE
# Look for fields with multiple references.
cat $INPUTFILE | cut -d' ' -f2 | sort | uniq -d >$DUPSFILE
if [ -s $DUPSFILE ] ; then
echo "Ignoring these fields that link to multiple tables:" 1>&2
cat $DUPSFILE 1>&2
fi
# Get the non-multiply-referenced fields.
cat $INPUTFILE | while read LINE
do
set -- $LINE
grep "^$2\$" $DUPSFILE >/dev/null 2>&1 || echo $LINE
done >$NONDUPSFILE
# Generate the output.
cat $NONDUPSFILE |
$AWK -F'[ \.]' '\
BEGIN \
{
printf "\
--\n\
-- This is created by pgsql/contrib/findoidjoins/make_oidjoin_check\n\
--\n";
}
{
printf "\
SELECT ctid, %s \n\
FROM %s.%s fk \n\
WHERE %s != 0 AND \n\
NOT EXISTS(SELECT 1 FROM %s.%s pk WHERE pk.oid = fk.%s);\n",
$4, $2, $3, $4,
$6, $7, $4;
}'
exit 0
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