MySQL: Get column name or alias from query

Question

I\'m not asking for the SHOW COLUMNS command.

I want to create an application that works similarly to heidisql, where you can specify an SQL query and w

Answer 1

cursor.description will give you a tuple of tuples where [0] for each is the column header.

num_fields = len(cursor.description)
field_names = [i[0] for i in cursor.description]

Answer 2

This is the same as thefreeman but more in pythonic way using list and dictionary comprehension

columns = cursor.description 
result = [{columns[index][0]:column for index, column in enumerate(value)} for value in cursor.fetchall()]

pprint.pprint(result)

Answer 3

Similar to @James answer, a more pythonic way can be:

fields = map(lambda x:x[0], cursor.description)
result = [dict(zip(fields,row))   for row in cursor.fetchall()]

You can get a single column with map over the result:

extensions = map(lambda x: x['ext'], result)

or filter results:

filter(lambda x: x['filesize'] > 1024 and x['filesize'] < 4096, result)

or accumulate values for filtered columns:

totalTxtSize = reduce(
        lambda x,y: x+y,
        filter(lambda x: x['ext'].lower() == 'txt', result)
)

Answer 4

You can also do this to just get the field titles:

table = cursor.description
check = 0
for fields in table:
    for name in fields:
        if check < 1:
            print(name),
        check +=1
    check =0