Aggregate functions are a subset of SQL functions that compute a single value from multiple input rows, mostly used in `SELECT` queries with a `GROUP BY` clause.
I have been looking and I cannot find an example or discussion of the aggregate function in Scala that I …
scala aggregate-functionsI need function, that returns list of strings. I have data in table like this: Id MyString ------------------------ 1 First 2 Second 3 …
mysql aggregate-functionsI want to know how can i find all the values that are NULL in the MySQL database for example …
mysql aggregate-functionsI have a table of two string type columns (username, friend) and for each username, I want to collect all …
apache-spark aggregate-functions apache-spark-sqlI am looking for clarification on this. I am writing two queries below: We have a table of employee name …
sql oracle aggregate-functionsI know how to write a UDF in Spark SQL: def belowThreshold(power: Int): Boolean = { return power < -40 } sqlContext.…
scala apache-spark apache-spark-sql aggregate-functions user-defined-functionsI would like to aggregate two columns into one "array" when grouping. Assume a table like so: friends_map: ================================= user_…
sql arrays postgresql aggregate-functionsPossible Duplicate: What is the fastest way to truncate timestamps to 5 minutes in Postgres? Postgresql SQL GROUP BY time interval …
sql postgresql datetime aggregate-functionsI am stuck here. I have row in Postgres like this: id amount a 5000 a 1500 a 500 b 2000 b 1000 c 4000 How …
sql postgresql aggregate-functionsHow can use the function SUM() for bit columns in T-SQL? When I try do it as below: SELECT SUM(…
sql sql-server tsql aggregate-functions