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我正在將一個sql查詢的結果寫入excel工作表,並嘗試將行轉換爲列,但似乎無法讓熊貓得到處理,似乎有某種與excel類似的難題。我已經做了我googlefu,並看了看:熊貓將行轉置爲列
how to switch columns rows in a pandas dataframe
How to convert rows values in dataframe to columns labels in Python after groupby?
Convert row to column in Python Pandas
Python Pandas: Convert Rows as Column headers
無似乎工作。請告知這一點。
import psycopg2
import pandas as pd
import xlsxwriter
try:
conn = psycopg2.connect(private stuff cannot be shared)
except:
print ("I am unable to connect to the database")
cursor = conn.cursor()
writer = pd.ExcelWriter("Z:/AWS/SQLQueries/Phoebe's Request.xlsx",engine = 'xlsxwriter')
query20 = """SELECT 2 AS rowtype
, source AS "TrafficTypes_Name"
, COUNT(source) AS "Traffic"
, to_char(week,'MM/dd/yyyy') AS "Week_Ending"
FROM amazon.tracker
where project_id = 'PCR'
GROUP
BY source
, to_char(week,'MM/dd/yyyy')
UNION ALL
SELECT 1
, 'Visitor Center Walk-ins'
, COUNT(source)
, to_char(week,'MM/dd/yyyy') as week
FROM amazon.tracker
where project_id = 'PCR'
GROUP
BY to_char(week,'MM/dd/yyyy')
ORDER
BY "Week_Ending"
, rowtype"""
cursor.execute(query20)
result = cursor.fetchall()
first = pd.DataFrame(result, columns = ["rowtype","TrafficTypes_Name","Traffic","Week_Ending"])
first.drop(first.columns[0],axis=1, inplace = True)
first.pivot(index = 'Week_Ending', columns = 'TrafficTypes_Name' , values = 'Traffic')
first.to_excel(writer, sheet_name = 'Visitor Traffic',index = False)
print ("Query 20 Created")
writer.save()
Excel表:
TrafficTypes_Name Traffic Week_Ending
Visitor Center Walk-ins 18 01/01/2017
Resident Referral 1 01/01/2017
Community Website 1 01/01/2017
Realtor 1 01/01/2017
Other Website 1 01/01/2017
Social Media 1 01/01/2017
Builder 3 01/01/2017
Drive-by 10 01/01/2017
請求:
Week_Ending Visitor Center Walk-ins Resident Referral Community Website Realtor ....................
01/01/2017 18 1 1 1 .........................
什麼是SQL已與這一切呢?儘量讓你的問題儘可能少。 – Elmex80s