Oracle custom aggregate
107680
How do I create a user-defined aggregate function?
85336
Extract a full timestamp (date included) from a Select query; Oracle
52166
SELECT COUNT(*) AS count - How to use this count
52343
How to include the total number of returned rows in the resultset from SELECT T-SQL command?
135942
Group by alias (Oracle)
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Counting DISTINCT over multiple columns
142348
Oracle: Combine multiple results in a subquery into a single comma-separated value
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Select multiple (non-aggregate function) columns with GROUP BY
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coalesce alternative in Access SQL
62300
Mysql count instances of substring, then order by
33185
What does SE use to calculate reputations? SQL aggregate functions? A manual method?
148865
How to use `to_sql` in AREL when using `average()`?
144271
Use SUM In Update Statement
104535
Concatenate results from a SQL query in Oracle
74036
Count the occurrences of DISTINCT values
85000
Advice Using Pivot Table in Oracle
2076
Trailing Sum Query