Reason for Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause
127641
GROUP BY / aggregate function confusion in SQL
103108
Applying aggregate function SUM together with GROUP BY
126717
How to approach GROUP BY in PostgreSQL using Rails?
21053
How to use GROUP BY to concatenate strings in MySQL?
149449
Better query to select multiple columns into a single output column?
34656
Alias of COUNT is not being "recognized" by SQL Server
106227
Using column alias in WHERE clause of MySQL query produces an error
85308
What does the error "Ambiguous column name 'id'" mean?
118065
Including null values in unpivoted column
108727
rails - using :select(distinct) with :has_many :through association produces invalid SQL
82709
SQLException: Invalid Column Name...?
112218
How do I UPDATE from a SELECT in SQL Server?
157063
Some part of your SQL statement is nested too deeply. Rewrite the query or break it up into smaller queries
68103
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints
110097
How do I compare two columns in SQL?
118546
In SQL, how can you "group by" in ranges?
37566
How to create a SQL Server function to "join" multiple rows from a subquery into a single delimited field?