Output pyodbc cursor results as python dictionary

Question

How do I serialize pyodbc cursor output (from .fetchone, .fetchmany or .fetchall) as a Python dictionary?

I\'m using bottlepy

Answer 1

Mainly going off @Torxed response, I created a full generalised set of functions to find the schema and data into a dictionary:

def schema_dict(cursor):
    cursor.execute("SELECT sys.objects.name, sys.columns.name FROM sys.objects INNER JOIN sys.columns ON sys.objects.object_id = sys.columns. object_id WHERE sys.objects.type = 'U';")
    schema = {}

    for it in cursor.fetchall():
        if it[0] not in schema:
            schema[it[0]]={'scheme':[]}
        else:
            schema[it[0]]['scheme'].append(it[1])

    return schema


def populate_dict(cursor, schema):
    for i in schema.keys():
        cursor.execute("select * from {table};".format(table=i))

        for row in cursor.fetchall():
            colindex = 0

            for col in schema[i]['scheme']:
                if not 'data' in schema[i]:
                    schema[i]['data']=[]

                schema[i]['data'].append(row[colindex])
                colindex += 1

    return schema

def database_to_dict():
    cursor = connect()
    schema = populate_dict(cursor, schema_dict(cursor))

Feel free to go all code-golf on this to reduce the lines; but in the meantime, it works!

;)

Answer 2

For situations where the cursor is not available - for example, when the rows have been returned by some function call or inner method, you can still create a dictionary representation by using row.cursor_description

def row_to_dict(row):
    return dict(zip([t[0] for t in row.cursor_description], row))