SlenderQL 0.1.4

Missing library for working with raw SQL in Python/psycopg

SlenderQL

SlenderQL - Missing library for working with raw SQL in Python/psycopg

• 💯 No ORM, no magic, just SQL
• 🎨 Highlighted by default in IDEs
• 🏜️ DRY you queries, without losing control
• 🧐 Pydantic and Psycopg under the hood

Installation

pip install SlenderQL

or

uv add SlenderQL

Usage

from slenderql.repository import Filter, ILike, GTE, LT, BaseRepository, DB
from pydantic import BaseModel
from datetime import datetime


class User(BaseModel):
    name: str
    email: str
    joined_at: datetime


class UserRepository(BaseRepository):
    model = User

    async def all(
        self,
        query: str | None = None,
        after: datetime | None = None,
        before: datetime | None = None,
        limit: int = 100,
        offset: int = 0,
    ) -> list[User]:
        return await self.fetchall(
            """
            SELECT * FROM users
            WHERE ({name} OR {email})
                AND {after}
                AND {before}
            ORDER BY joined_at DESC
            LIMIT %s OFFSET %s
            """,
            (
                ILike("name", query),
                ILike("email", query),
                GTE("after", after, "joined_at"),
                LT("before", before, "joined_at"),
                limit,
                offset,
            )
        )


class RepostoryManager(DB):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.users = UserRepository(self)

db = RepostoryManager(
    f"user=postgres "
    f"password=postgres "
    f"host=postgres "
    f"dbname=postgres"
)

now you can use all() method with multiple filters

>>> await db.users.all(query="alex")
>>> await db.users.all(query="alex", after=datetime(2023, 1, 1))
>>> await db.users.all(query="alex", after=datetime(2023, 1, 1), before=datetime(2023, 2, 1))
>>> await db.users.all(before=datetime(2023, 2, 1), limit=10)