Add a Count field to a data frame
31119
Count number of rows per group and add result to original data frame
144137
Add max value to a new column in R
131081
COUNTIF but when multiple conditions are met
15658
Adding file name to attribute field using Calculate Field?
73572
Create counter with multiple variables
132210
How to assign a counter to a specific subset of a data.frame which is defined by a factor combination?
78636
Column name or number of supplied values does not match table definition. What shoul I do?
129965
Assigning row number for sorted table by column in QGIS
138732
How to replace multiple items with same count of a different item?
82140
How do I delete rows in a data frame?
132276
How to sum data.frame column values?
52166
SELECT COUNT(*) AS count - How to use this count
60414
Copy value from Lookup (CountRelated) column to another 'Number' column
121414
Aggregate data in R
126793
no room for new \count error
95517
Count How many times a value appeared in a column(excel)
84100
Count the number of occurrences of a string in a VARCHAR field?