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Create Views and Materialized Views with SqlAlchemy

Project description

SQL Alchemy Plus

This package provide additional package definition for SqlAlchemy that are specific for PostgreSQL and other database.

Here are the currently supported features (database supported):

  • View (PostgreSQL)
  • Materialized View (PostgreSQL)

Installation

Install SQL Alchemy Plus using pip

pip install sqlalchemyplus

Quick start

Define a View or a Materialized View programmatically

from sqlalchemy import Table, select, Column, MetaData, Integer, String
from sqlalchemyplus import View

metadata = MetaData()
table = Table('mytable',
              metadata,
              Column('key', Integer),
              Column('value', String))

select_table = table.select()
view = View(
    'myview',
    metadata,
    select_table
)

Create and drop a view

from sqlalchemy import create_engine
from sqlalchemyplus import CreateView, DropView

engine = create_engine("postgresql://example:example@localhost:5432/mydatabase")

view = View(
    'myview',
    metadata,
    select_table
)

# Execute 'CREATE VIEW myview AS (...)'
engine.execute(CreateView(view))

# Execute 'DROP VIEW myview'
engine.execute(CreateView(view))

Project details


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