Is there a way to count a number of distinct values?
57566
SQL to find the number of distinct values in a column
65505
Any way to do DISTINCT ON?
96093
How do I get the distinct/unique values in a column in Excel?
133507
How can I single out unique values in Excel
25114
MYSQL sum() for distinct rows
142258
How can I count unique selections from multiple selections in a drop down list (Excel)
37079
How to automatically generate N "distinct" colors?
60555
How to count occurrences of a column value efficiently in SQL?
3455
unique combinations of values in selected columns in pandas data frame and count
95517
Count How many times a value appeared in a column(excel)
109340
How to count items in comma separated list MySQL
135836
How to count of sub-string occurrences?
35011
How can I count the number of records that have a unique value in a particular field in ROR?
132625
See how many duplicates of a post?
16236
Is it possible to enforce unique values in a column, excluding nulls?
38238
Return counts for multiple ranges in a single SELECT statement
5403
Sql Server equivalent of a COUNTIF aggregate function