SQL is a tool that is widely used in the manipulation of data and featuring in the relational database. They are applied in querying, manipulating as well as reporting data and it is commonly used by ...

Learn how to easily fix the your query does not include the specified expression as part of an aggregate function SQL error.

If you still prefer GitHub issues, remove all this text and ask your question here. sql: SELECT toStartOfInterval (timestamp, INTERVAL 1 day) as timestamp, sum (last_value (number_field_values ...

SQL window functions provide extremely powerful and useful features that let you work with observations more easily. Different types explained here.

SQLite has nice feature which allows to register custom aggregate functions written in C (and Lua in case of Tarantool) and available from SQL like any other. Example is count_x() which counts numb ...

Anyone know the best way to write a median aggregate function in ms sql server 2k? I've seen a couple ways of doing it when I briefly searched google but they weren't presented as functions.