#SimpleMysql An ultra simple wrapper for Python MySQLdb with very basic functionality

• Kailash Nadh, June 2013. Sergey Nagaytsev, Aug 2018
• Documentation: http://nadh.in/code/simplemysql
• License: GPL v2

Installation

With pip or easy_install

pip install simplemysql or easy_install simplemysql

Or from the source

python setup.py install

Usage

Connection

import MySQLdb

from simplemysql import SimpleMysql

def _connection_factory():
    conn = MySQLdb.connect(
        host='127.0.0.1',
        port=3306,
        user='root',
        passwd='',
        db='test',
    )
    conn.autocommit(True)
    return conn

db = SimpleMysql(_connection_factory)

import psycopg2

from simplemysql import DialectPostgres, SimpleMysql

_CONNECT = dict(
    host='127.0.0.1',
    port=5432,
    user='travis',
    password='',
    dbname='test',
)

db = SimpleMysql(lambda: psycopg2.connect(**_CONNECT), DialectPostgres())

# insert a record to the <em>books</em> table
db.insert("books", {"type": "paperback", "name": "Time Machine", "price": 5.55, year: "1997"})

book = db.getOne("books", ["name"], ["year = 1997"])

print "The book's name is " + book.name

Query methods

insert(), update(), delete(), getOne(), getAll(), lastId(), query()

insert(table, record{})

Inserts a single record into a table.

db.insert("food", {"type": "fruit", "name": "Apple", "color": "red"})
db.insert("books", {"type": "paperback", "name": "Time Machine", "price": 5.55})

update(table, row{}, condition[])

Update one more or rows based on a condition (or no condition).

# update all rows
db.update("books", {"discount": 0})

# update rows based on a simple hardcoded condition
db.update("books",
	{"discount": 10},
	["id=1"]
)

# update rows based on a parametrized condition
db.update("books",
	{"discount": 10},
	("id=%s AND year=%s", [id, year])
)

insertBatch(table, rows{})

Insert Multiple values into table.

# insert multiple values in table
db.insertBatch("books", [{"discount": 0},{"discount":1},{"discount":3}])

insertOrUpdate(table, row{}, key)

Insert a new row, or update if there is a primary key conflict.

# insert a book with id 123. if it already exists, update values
db.insertOrUpdate("books",
		{"id": 123, type": "paperback", "name": "Time Machine", "price": 5.55},
		"id"
)

getOne(table, fields[], where[], order[], limit[])

getAll(table, fields[], where[], order[], limit[])

Get a single record or multiple records from a table given a condition (or no condition). The resultant rows are returned as namedtuples. getOne() returns a single namedtuple, and getAll() returns a list of namedtuples.

book = db.getOne("books", ["id", "name"])

# get a row based on a simple hardcoded condition
book = db.getOne("books", ["name", "year"], ("id=1"))

# get multiple rows based on a parametrized condition
books = db.getAll("books",
	["id", "name"],
	("year > %s and price < %s", [year, 12.99])
)

# get multiple rows based on a parametrized condition with an order and limit specified
books = db.getAll("books",
	["id", "name", "year"],
	("year > %s and price < %s", [year, 12.99]),
	["year", "DESC"],	# ORDER BY year DESC
	[0, 10]			# LIMIT 0, 10
)

lastId()

Get the last insert id

# get the last insert ID
db.lastId()

lastQuery()

Get the last query executed

# get the SQL of the last executed query
db.lastQuery()

delete(table, fields[], condition[], order[], limit[])

Delete one or more records based on a condition (or no condition)

# delete all rows
db.delete("books")

# delete rows based on a condition
db.delete("books", ("price > %s AND year < %s", [25, 1999]))

query(table)

Run a raw SQL query. The MySQLdb cursor is returned.

# run a raw SQL query
db.query("DELETE FROM books WHERE year > 2005")

commit()

Insert, update, and delete operations on transactional databases such as innoDB need to be committed

# Commit all pending transaction queries
db.commit()