chore(infrastructure): don't index nulls

Author: emptybutton

src/ttt/infrastructure/alembic/versions/7ce97d6efd2c_don_t_index_null_s.py

@@ -0,0 +1,90 @@
+"""
+don't index `null`s.
+
+Revision ID: 7ce97d6efd2c
+Revises: ba0f7132baef
+Create Date: 2025-09-19 11:58:53.188572
+
+"""
+
+from collections.abc import Sequence
+
+from alembic import op
+
+
+revision: str = "7ce97d6efd2c"
+down_revision: str | None = "ba0f7132baef"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.drop_index(op.f("ix_users_selected_emoji_id"), table_name="users")
+    op.create_index(
+        op.f("ix_users_selected_emoji_id"),
+        "users",
+        ["selected_emoji_id"],
+        unique=False,
+        postgresql_where="(selected_emoji_id IS NOT NULL)",
+    )
+
+    op.drop_index(op.f("ix_users_current_game_id"), table_name="users")
+    op.create_index(
+        op.f("ix_users_current_game_id"),
+        "users",
+        ["current_game_id"],
+        unique=False,
+        postgresql_where="(current_game_id IS NOT NULL)",
+    )
+
+    op.drop_index(op.f("ix_cells_user_filler_id"), table_name="cells")
+    op.create_index(
+        op.f("ix_cells_user_filler_id"),
+        "cells",
+        ["user_filler_id"],
+        unique=False,
+        postgresql_where="(user_filler_id IS NOT NULL)",
+    )
+
+    op.drop_index(op.f("ix_cells_ai_filler_id"), table_name="cells")
+    op.create_index(
+        op.f("ix_cells_ai_filler_id"),
+        "cells",
+        ["ai_filler_id"],
+        unique=False,
+        postgresql_where="(ai_filler_id IS NOT NULL)",
+    )
+
+
+def downgrade() -> None:
+    op.drop_index(op.f("ix_users_selected_emoji_id"), table_name="users")
+    op.create_index(
+        op.f("ix_users_selected_emoji_id"),
+        "users",
+        ["selected_emoji_id"],
+        unique=False,
+    )
+
+    op.drop_index(op.f("ix_users_current_game_id"), table_name="users")
+    op.create_index(
+        op.f("ix_users_current_game_id"),
+        "users",
+        ["current_game_id"],
+        unique=False,
+    )
+
+    op.drop_index(op.f("ix_cells_user_filler_id"), table_name="cells")
+    op.create_index(
+        op.f("ix_cells_user_filler_id"),
+        "cells",
+        ["user_filler_id"],
+        unique=False,
+    )
+
+    op.drop_index(op.f("ix_cells_ai_filler_id"), table_name="cells")
+    op.create_index(
+        op.f("ix_cells_ai_filler_id"),
+        "cells",
+        ["ai_filler_id"],
+        unique=False,
+    )

src/ttt/infrastructure/sqlalchemy/tables/game.py

@@ -86,11 +86,22 @@ class TableCell(Base[Cell]):
     user_filler_id: Mapped[int | None] = mapped_column(
         BigInteger(),
         ForeignKey("users.id", deferrable=True, initially="DEFERRED"),
-        index=True,
     )
     ai_filler_id: Mapped[UUID | None] = mapped_column(
         ForeignKey("ais.id", deferrable=True, initially="DEFERRED"),
-        index=True,
+    )
+
+    __table_args__ = (
+        Index(
+            "ix_cells_user_filler_id",
+            user_filler_id,
+            postgresql_where=(user_filler_id.is_not(None)),
+        ),
+        Index(
+            "ix_cells_ai_filler_id",
+            ai_filler_id,
+            postgresql_where=(ai_filler_id.is_not(None)),
+        ),
     )
 
     def __entity__(self) -> Cell:

src/ttt/infrastructure/sqlalchemy/tables/user.py

@@ -79,12 +79,10 @@ class TableUser(Base[User]):
     account_stars: Mapped[int] = mapped_column(server_default="0")
     selected_emoji_id: Mapped[UUID | None] = mapped_column(
         ForeignKey("user_emojis.id", deferrable=True, initially="DEFERRED"),
-        index=True,
     )
     rating: Mapped[float]
     current_game_id: Mapped[UUID | None] = mapped_column(
         ForeignKey("games.id", deferrable=True, initially="DEFERRED"),
-        index=True,
     )
     admin_right: Mapped[TableAdminRight | None] = mapped_column(admin_right)
     admin_right_via_other_admin_admin_id: Mapped[int | None] = mapped_column(
@@ -101,6 +99,16 @@ class TableUser(Base[User]):
     )
 
     __table_args__ = (
+        Index(
+            "ix_users_selected_emoji_id",
+            selected_emoji_id,
+            postgresql_where=(selected_emoji_id.is_not(None)),
+        ),
+        Index(
+            "ix_users_current_game_id",
+            current_game_id,
+            postgresql_where=(current_game_id.is_not(None)),
+        ),
         Index(
             "ix_users_admin_right_via_other_admin_admin_id",
             admin_right_via_other_admin_admin_id,