Questions about outer-join
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When I panel match two merged datasets (inner_join), an error appears telling me to remove duplicates - 'fake' data used for simplicity
Two datasets, each with a unit variable [firmID], time variable [year)] and unique variable each (a numeric [revenue] and a binary [Director]) are merged using inner_join on both unit and time variabl...
SNNSAL
Votes: 0
Answers: 2
Outer Join Tables - Keep Descriptions
new = pd.DataFrame({'table': \['a','b', 'c', 'd'\], 'desc': \['','','',''\], 'total':\[22,22,22,22\]})
old = pd.DataFrame({'table': \['a','b', 'e'\], 'desc': \['foo','foo','foo'\], 'total':\[11,11,11\...
user3642209
Votes: 0
Answers: 1
SQL select other column with count
We need a SQL query to get the following output.
Note: Table contains millions of records. Need an optimized query
Select
E.EmpId, E.EmpName, E.Salary,
(select count(*) from Dept where ...
VMK
Votes: 0
Answers: 1
Append new data and update exisitng data in table from inserting another
In SQL, I have a table with 3 columns that is refreshed through the day. I want to append "table a" data to "table b". I need to ensure the there are no duplicate rows by date, but...
Shay D
Votes: 0
Answers: 0