“Not equal” sign in Visual Prolog?
I don’t know what do you mean by “not equal” (does not unify?), but you could try these: X \= Y not(X = Y) \+ (X = Y)
clause
Using variable in a LIMIT clause in MySQL
For those, who cannot use MySQL 5.5.6+ and don’t want to write a stored procedure, there is another variant. We can add where clause on a subselect with ROWNUM. SET @limit = 10; SELECT * FROM ( SELECT instances.*, @rownum := @rownum + 1 AS rank FROM instances, (SELECT @rownum := 0) r ) d … Read more
How to collapse If, Else, For, Foreach, etc clauses? [duplicate]
Try this plugin (C# Outline Extension): VS2010 VS2012 VS2013 VS2015 VS2017 VS2019
The SQL OVER() clause – when and why is it useful?
You can use GROUP BY SalesOrderID. The difference is, with GROUP BY you can only have the aggregated values for the columns that are not included in GROUP BY. In contrast, using windowed aggregate functions instead of GROUP BY, you can retrieve both aggregated and non-aggregated values. That is, although you are not doing that … Read more