Login

custom sql without table names

Author:
robharvey
Posted:
May 18, 2007
Language:
Python
Version:
.96
Score:
1 (after 5 ratings)

Keeps database table names out of custom SQL code, but still allows for correct parameter passing in the execute function. (psycopg doesn't substitute table or field names, only data, in the execute function)

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
    # dict indexed to model names
    tables = {'str':'%s'}
    for x in ModelOne, ModelTwo:
        tables[x._meta.object_name] = x._meta.db_table

    cursor = connection.cursor()
    ex_str =  """\
    select field1, field2, sum(field3) from %(ModelOne)s where date between %(str)s and %(str)s 
    group by field1, field2
    """ % tables
    cursor.execute(ex_str, dates)
    sumt = cursor.fetchall()

More like this

  1. find even number by Rajeev529 1 month ago
  2. Form field with fixed value by roam 1 month, 3 weeks ago
  3. New Snippet! by Antoliny0919 2 months ago
  4. Add Toggle Switch Widget to Django Forms by OgliariNatan 4 months, 3 weeks ago
  5. get_object_or_none by azwdevops 8 months, 2 weeks ago

Comments

Please login first before commenting.