prevent dupe tags from mtp (replace id3 tags)

docs/notes.sh

@@ -67,6 +67,17 @@ wget -S --header='Accept-Encoding: gzip' -U 'MSIE 6.0; SV1' http://127.0.0.1:392
 shab64() { sp=$1; f="$2"; v=0; sz=$(stat -c%s "$f"); while true; do w=$((v+sp*1024*1024)); printf $(tail -c +$((v+1)) "$f" | head -c $((w-v)) | sha512sum | cut -c-64 | sed -r 's/ .*//;s/(..)/\\x\1/g') | base64 -w0 | cut -c-43 | tr '+/' '-_'; v=$w; [ $v -lt $sz ] || break; done; }
 
 
+##
+## sqlite3 stuff
+
+# find dupe metadata keys
+sqlite3 up2k.db 'select mt1.w, mt1.k, mt1.v, mt2.v from mt mt1 inner join mt mt2 on mt1.w = mt2.w where mt1.k = mt2.k and mt1.rowid != mt2.rowid'
+
+# partial reindex by deleting all tags for a list of files
+sqlite3 up2k.db 'select mt1.w from mt mt1 inner join mt mt2 on mt1.w = mt2.w where mt1.k = mt2.k and mt1.rowid != mt2.rowid'  > warks
+cat warks | while IFS= read -r x; do sqlite3 up2k.db "delete from mt where w = '$x'"; done
+
+
 ##
 ## vscode