Insert (postgresql/dml.py)

PostgreSQL-specific INSERT implementation with ON CONFLICT support.

# Source: https://github.com/sqlalchemy/sqlalchemy | License: MIT | Copyright 2005-2026 SQLAlchemy authors and contributors <see AUTHORS file>
# Provided via justclaw.it.com; keep this notice with the code.
# dialects/postgresql/dml.py
# Copyright (C) 2005-2026 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: https://www.opensource.org/licenses/mit-license.php
from __future__ import annotations

from typing import Any
from typing import Dict
from typing import List
from typing import Optional
from typing import Union

from . import ext
from .._typing import _OnConflictConstraintT
from .._typing import _OnConflictIndexElementsT
from .._typing import _OnConflictIndexWhereT
from .._typing import _OnConf

... (truncated -- full source via MCP)