Complex point aggregation with modifiers...

MongoDB: Map array of ids to objects while preserving order via aggregation functions...

Given time/interval to calculate open/high/low/close value in each grouped data...

Max() and Min() have different behaviours?...

Nested grouping in MongoDB aggregation...

Determine a target record's offset in a Postgres query...

Aggregate function in Tuple Relational Calculus...

compare an attribute value to the value of an aggregate function in relational algebra...

SQL select only rows with max value on a column...

MySQL "Group By" and "Order By"...

Create two arrays for two fields, keeping sort order of arrays in sync (without subquery)...

Concatenate date values in Postgres...

aggregating MAX() over a group over the MAX() of a subgroup...

Why the order by in XMLAGG doesn't give the same result as the same order by on a SELECT?...

PostgreSQL - string_agg with limited number of elements...

building a trigger function to process json data with postgres...

Why does one aggregate query work and the other raise an error?...

Postgres: limit by the results of a sum function...

Aggregated rollup in PostgreSQL with avg and sum in different levels?...

Does T-SQL have an aggregate function to concatenate strings?...

Oracle SQL - Sum and group data by week...

What is the difference between PARTITION BY and GROUP BY...

MySQL ask to add column to GROUP BY which I don't want to use in GROUP BY...

PostgreSQL, SUM and GROUP from numeric column and hstore...

How to use a SQL window function to calculate a percentage of an aggregate...

Need to format the data in trino sql...

Column names in GROUP BY and ORDER BY...

SQL filter rows by range overlap...

how to calculate the amount?...

Convert a query result to hstore...