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pythonmysqlormpeewee

Querying in python peewee using combination of fields


I have a table with fields name:string and id_no:integer, from an external source I get list of name and id_no, I need to fetch the records with this combination using peewee ORM.

for example:

input = [
{'name':'name1', 'id_no': 1},
{'name':'name2', 'id_no': 2},
{'name':'name3', 'id_no': 3},
]

What query do I write in order to fetch records with above mentioned combination of data?

Similar query in mysql:

SELECT * FROM table_name
WHERE CONCAT(convert(id_no, char), ':', name) IN ('1:name1','2:name2','3:name3')

Solution

  • I'd write it as:

    import operator
    
    data = [
      {'name':'name1', 'id_no': 1},
      {'name':'name2', 'id_no': 2},
      {'name':'name3', 'id_no': 3},
    ]
    conditions = [
      ((MyModel.name == item['name']) & (MyModel.id_no == item['id_no']))
      for item in data]
    expr = reduce(operator.or_, conditions)
    query = MyModel.select().where(expr)