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 stumbled upon a question (in a test) about which aggregate functions are applicable to DATE type columns. So, as …
sql date aggregate-functions ansi-sqlI need to calculate percentages of various dimensions in a table. I'd like to simplify things by using window functions …
sql postgresql aggregate-functions window-functions greenplumcurrently im working with mysql 5.7 in development, and 5.6 in production. Each time i run a query with a group by …
mysql group-by aggregate-functions mysql-error-1055(have done this before, but memory fades, as does goggle) wish to get select from users with the tag.tag_…
arrays postgresql subquery aggregate-functionsI have found solutions (I think) to the problem I'm about to ask for on Oracle and SQL Server, but …
postgresql aggregate-functions plpgsql dynamic-sql dynamic-queriesI'm building a food logging database in Django and I've got a query related problem. I've set up my models …
django django-models aggregate-functions django-querysetIs there a faster way in PostgreSQL to essentially do an if on several rows? Say I have a table …
sql postgresql aggregate-functions exists boolean-logicI need a standard deviation function in SQLite. I have found one here: http://www.sqlite.org/contrib?orderby=date …
sql sqlite aggregate aggregate-functions standard-deviationfor SQL Server 2008 R2 I have a resultset that looks like this (note [price] is numeric, NULL below represents a …
sql-server aggregate-functions sql-server-2008-r2 analytic-functionsGiven that I've got a table with the following, very simple content: # select * from messages; id | verbosity ----+----------- 1 | 20 2 | 20 3 | 20 4 | 30 5 | 100 (5 rows) …
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