diff --git a/scripts/merge_dbs.sge b/scripts/merge_dbs.sge
index 2a24243..c8486e2 100755
--- a/scripts/merge_dbs.sge
+++ b/scripts/merge_dbs.sge
@@ -16,5 +16,4 @@ override_vars
 
 set -u
 
-find $DBDIR -name "*.sqlite" -exec bash -c "sqlite3 {} .schema | sqlite3 $OUTDBPATH" \; -quit
 find $DBDIR -name "*.sqlite" -exec "$EXTENSIONCRAWLERDIR/scripts/merge_dbs.sh" "{}" "$OUTDBPATH" \;
diff --git a/scripts/merge_dbs.sh b/scripts/merge_dbs.sh
index cb2b918..3050554 100755
--- a/scripts/merge_dbs.sh
+++ b/scripts/merge_dbs.sh
@@ -7,11 +7,30 @@ if [ -z $FROM_DB ] || ! [ -f $FROM_DB ]; then
   exit 1
 fi
 
-if [ -z $TO_DB ] || ! [ -f $TO_DB ]; then
-  echo "destination db not provided or does not exist"
+if [ -z $TO_DB ]; then
+  echo "destination db not provided"
   exit 1
 fi
 
+if ! [ -f $TO_DB ]; then
+  echo "Creating $TO_DB ..."
+  sqlite3 $FROM_DB .schema | grep -Eiv \
+    -e "^CREATE TABLE IF NOT EXISTS (\"|')?[a-z]+_content(\"|')?\(" \
+    -e "^CREATE TABLE IF NOT EXISTS (\"|')?[a-z]+_docsize(\"|')?\(" \
+    -e "^CREATE TABLE IF NOT EXISTS (\"|')?[a-z]+_segments(\"|')?\(" \
+    -e "^CREATE TABLE IF NOT EXISTS (\"|')?[a-z]+_stat(\"|')?\(" \
+    -e "^CREATE TABLE IF NOT EXISTS (\"|')?[a-z]+_segdir(\"|')?\(" \
+  | sqlite3 $TO_DB
+fi
+
 echo "Merging $FROM_DB into $TO_DB..."
 
-sqlite3 $FROM_DB .dump | grep -v "^CREATE TABLE" | sqlite3 $TO_DB
+sqlite3 $FROM_DB .dump | grep -Eiv \
+  -e "^CREATE TABLE" \
+  -e "^INSERT INTO (\"|')?sqlite_master(\"|')?" \
+  -e "^INSERT INTO (\"|')?[a-z]+_segments(\"|')? " \
+  -e "^INSERT INTO (\"|')?[a-z]+_segdir(\"|')? " \
+  -e "^INSERT INTO (\"|')?[a-z]+_docsize(\"|')? " \
+  -e "^INSERT INTO (\"|')?[a-z]+_stat(\"|')? " \
+| sed -r "s/^INSERT INTO ([a-z]+)_content VALUES\([[:digit:]]+,/INSERT INTO \1 VALUES(/I" \
+| sqlite3 $TO_DB