Create queries table; set up cascade deletes

app/dbtables.py

@@ -79,6 +79,9 @@ class PlaylistsTable(Model):
         cascade="all, delete-orphan",
         order_by="PlaylistRowsTable.row_number",
     )
+    query: Mapped["QueriesTable"] = relationship(
+        back_populates="playlist", cascade="all, delete-orphan"
+    )
 
     def __repr__(self) -> str:
         return (
@@ -95,7 +98,10 @@ class PlaylistRowsTable(Model):
     note: Mapped[str] = mapped_column(
         String(2048), index=False, default="", nullable=False
     )
-    playlist_id: Mapped[int] = mapped_column(ForeignKey("playlists.id"), index=True)
+    playlist_id: Mapped[int] = mapped_column(
+        ForeignKey("playlists.id", ondelete="CASCADE"), index=True
+    )
+
     playlist: Mapped[PlaylistsTable] = relationship(back_populates="rows")
     track_id: Mapped[Optional[int]] = mapped_column(ForeignKey("tracks.id"))
     track: Mapped["TracksTable"] = relationship(
@@ -114,6 +120,20 @@ class PlaylistRowsTable(Model):
         )
 
 
+class QueriesTable(Model):
+    __tablename__ = "queries"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    query: Mapped[str] = mapped_column(
+        String(2048), index=False, default="", nullable=False
+    )
+    playlist_id: Mapped[int] = mapped_column(ForeignKey("playlists.id"), index=True)
+    playlist: Mapped[PlaylistsTable] = relationship(back_populates="query")
+
+    def __repr__(self) -> str:
+        return f"<Queries(id={self.id}, playlist={self.playlist}, query={self.query}>"
+
+
 class SettingsTable(Model):
     """Manage settings"""