add postgres table diff

Signed-off-by: Nico Schottelius <nico@denkbrett.schottelius.org>

postgres-pgpool-diff.sh

@@ -0,0 +1,51 @@
+#!/bin/sh
+# Nico Schottelius, 20080514
+
+hosts="62.65.130.180 62.65.130.181"
+opts="-p 6543 -U postgres"
+tmpdir="$(mktemp -d /tmp/iuaeiueve.XXXXXXXXXXXXXXXX)"
+
+
+lasthost=""
+for host in $hosts; do
+   psql $opts -h "$host" -l | \
+      awk 'BEGIN { getline; getline } $2 ~ /\|/  { print $1 }' \
+         > "$tmpdir/db.$host"
+
+   if [ "$lasthost" ]; then
+      echo "Comparing DBs from $lasthost and $host"
+      diff -u  "$tmpdir/db.$lasthost" "$tmpdir/db.$host"
+   fi
+   lasthost="$host"
+done
+
+for db in $(cat "$tmpdir/db.$lasthost"); do
+   echo "Comparing Database $db ..."
+   
+   echo '\d' | psql $opts -h "$lasthost" "$db" | \
+      awk '$5 ~ /table/ { print $3 }' > "$tmpdir/tables.$lasthost"
+
+   while read table; do
+      echo -n "Comparing Table $table ($db) ..."
+         lastcount=""
+         lasthost=""
+         allcount=""
+         for host in $hosts; do
+            count="$(echo "select count(*) from $table" | \
+               psql $opts -h "$host" "$db" | \
+                  awk 'BEGIN { getline; getline } { print $0; exit 0 }')"
+            allcount="$allcount $count"
+            if [ "$lastcount" ]; then
+               if [ "$lastcount" -ne "$count" ]; then
+                  echo "mismatch: $lasthost \($lastcount\) != $host \($count\)"
+               fi
+            fi
+            lasthost="$host"
+         done
+      echo "$allcount"
+   done < "$tmpdir/tables.$lasthost"
+
+
+done
+
+rm -rf "$tmpdir"